./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/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_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:23:59,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:23:59,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:23:59,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:23:59,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:23:59,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:23:59,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:23:59,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:23:59,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:23:59,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:23:59,384 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:23:59,384 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:23:59,385 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:23:59,385 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:23:59,385 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:23:59,386 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:23:59,386 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:23:59,387 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:23:59,387 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:23:59,388 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:23:59,388 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:23:59,389 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:23:59,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:23:59,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:23:59,391 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:23:59,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:23:59,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:23:59,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:23:59,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:23:59,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:23:59,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:23:59,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:23:59,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:23:59,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:23:59,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:23:59,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:23:59,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:23:59,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:23:59,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:23:59,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:23:59,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:23:59,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:23:59,397 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:23:59,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:23:59,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:23:59,397 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:23:59,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:23:59,398 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_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2024-11-02 12:23:59,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:23:59,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:23:59,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:23:59,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:23:59,802 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:23:59,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c Unable to find full path for "g++" [2024-11-02 12:24:02,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:02,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:02,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2024-11-02 12:24:02,567 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/data/56cf0c789/4a552e7f59cf47c58ae2295c353cfeb2/FLAG6e40b20bb [2024-11-02 12:24:02,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/data/56cf0c789/4a552e7f59cf47c58ae2295c353cfeb2 [2024-11-02 12:24:02,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:02,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:02,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:02,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:02,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:02,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:02" (1/1) ... [2024-11-02 12:24:02,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483bbd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:02, skipping insertion in model container [2024-11-02 12:24:02,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:02" (1/1) ... [2024-11-02 12:24:02,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:03,432 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-11-02 12:24:03,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:03,462 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:03,474 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-02 12:24:03,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2024-11-02 12:24:03,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2024-11-02 12:24:03,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2024-11-02 12:24:03,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2024-11-02 12:24:03,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2024-11-02 12:24:03,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2024-11-02 12:24:03,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-11-02 12:24:03,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2024-11-02 12:24:03,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2024-11-02 12:24:03,571 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2024-11-02 12:24:03,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:03,615 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:03,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03 WrapperNode [2024-11-02 12:24:03,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:03,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:03,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:03,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:03,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,731 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 849 [2024-11-02 12:24:03,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:03,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:03,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:03,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:03,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:03,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:03,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:03,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:03,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (1/1) ... [2024-11-02 12:24:03,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:03,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:03,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b99ff8-9e7b-4951-afdc-4c30feb2b506/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-02 12:24:03,974 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-02 12:24:03,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-02 12:24:03,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-02 12:24:03,975 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:24:03,975 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:24:03,976 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:24:03,976 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:24:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:24:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:24:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:24:03,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:24:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:24:03,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:24:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:24:03,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:24:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-02 12:24:03,979 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-02 12:24:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:24:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:24:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:24:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:24:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:24:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:24:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:24:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:24:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-02 12:24:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-02 12:24:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:24:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:24:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:24:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:24:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:24:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:24:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:24:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:24:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:24:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:24:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-02 12:24:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-02 12:24:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:24:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:24:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:24:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:24:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:24:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:24:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-02 12:24:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-02 12:24:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:03,987 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:24:03,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:24:04,197 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:04,200 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:05,802 INFO L? ?]: Removed 448 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:05,802 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:06,992 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:06,992 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:24:06,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:06 BoogieIcfgContainer [2024-11-02 12:24:06,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:06,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:06,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:06,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:06,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:02" (1/3) ... [2024-11-02 12:24:07,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e55bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:06, skipping insertion in model container [2024-11-02 12:24:07,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:03" (2/3) ... [2024-11-02 12:24:07,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e55bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:07, skipping insertion in model container [2024-11-02 12:24:07,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:06" (3/3) ... [2024-11-02 12:24:07,002 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2024-11-02 12:24:07,020 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:07,021 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:24:07,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:07,109 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;@df376ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:07,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:24:07,117 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) [2024-11-02 12:24:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-02 12:24:07,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:07,149 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] [2024-11-02 12:24:07,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:07,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 412965801, now seen corresponding path program 1 times [2024-11-02 12:24:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077741886] [2024-11-02 12:24:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:24:08,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:08,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077741886] [2024-11-02 12:24:08,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077741886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:08,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:24:08,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577711047] [2024-11-02 12:24:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:08,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:24:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:08,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:24:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:08,467 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) [2024-11-02 12:24:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:08,843 INFO L93 Difference]: Finished difference Result 741 states and 1185 transitions. [2024-11-02 12:24:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:24:08,846 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 [2024-11-02 12:24:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:08,864 INFO L225 Difference]: With dead ends: 741 [2024-11-02 12:24:08,864 INFO L226 Difference]: Without dead ends: 380 [2024-11-02 12:24:08,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:08,879 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:08,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2219 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-02 12:24:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-02 12:24:08,971 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) [2024-11-02 12:24:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 595 transitions. [2024-11-02 12:24:08,982 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 595 transitions. Word has length 76 [2024-11-02 12:24:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:08,984 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 595 transitions. [2024-11-02 12:24:08,984 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) [2024-11-02 12:24:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 595 transitions. [2024-11-02 12:24:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:24:08,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:08,994 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] [2024-11-02 12:24:08,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:08,994 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:08,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -67014492, now seen corresponding path program 1 times [2024-11-02 12:24:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63520908] [2024-11-02 12:24:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:08,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:24:09,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63520908] [2024-11-02 12:24:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63520908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:09,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:24:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465393351] [2024-11-02 12:24:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:09,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:24:09,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:24:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:24:09,635 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) [2024-11-02 12:24:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:14,073 INFO L93 Difference]: Finished difference Result 1287 states and 2054 transitions. [2024-11-02 12:24:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-02 12:24:14,074 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 [2024-11-02 12:24:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:14,087 INFO L225 Difference]: With dead ends: 1287 [2024-11-02 12:24:14,087 INFO L226 Difference]: Without dead ends: 930 [2024-11-02 12:24:14,091 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 [2024-11-02 12:24:14,092 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 1485 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 4.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:14,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2478 Invalid, 4371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [521 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-02 12:24:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-02 12:24:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 874. [2024-11-02 12:24:14,210 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) [2024-11-02 12:24:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1398 transitions. [2024-11-02 12:24:14,218 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1398 transitions. Word has length 79 [2024-11-02 12:24:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:14,219 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1398 transitions. [2024-11-02 12:24:14,220 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) [2024-11-02 12:24:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1398 transitions. [2024-11-02 12:24:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-02 12:24:14,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:14,224 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] [2024-11-02 12:24:14,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:24:14,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:14,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1659199173, now seen corresponding path program 1 times [2024-11-02 12:24:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100471625] [2024-11-02 12:24:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:24:16,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100471625] [2024-11-02 12:24:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100471625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:24:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810472422] [2024-11-02 12:24:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:16,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:24:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:24:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:24:16,048 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), 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) [2024-11-02 12:24:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:21,192 INFO L93 Difference]: Finished difference Result 3583 states and 5829 transitions. [2024-11-02 12:24:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:24:21,193 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 [2024-11-02 12:24:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:21,293 INFO L225 Difference]: With dead ends: 3583 [2024-11-02 12:24:21,294 INFO L226 Difference]: Without dead ends: 2733 [2024-11-02 12:24:21,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:24:21,304 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 2563 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:21,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 1398 Invalid, 3515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1158 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-02 12:24:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2024-11-02 12:24:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2509. [2024-11-02 12:24:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1797 states have (on average 1.595436839176405) internal successors, (2867), 1888 states have internal predecessors, (2867), 566 states have call successors, (566), 129 states have call predecessors, (566), 145 states have return successors, (617), 552 states have call predecessors, (617), 561 states have call successors, (617) [2024-11-02 12:24:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 4050 transitions. [2024-11-02 12:24:21,697 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 4050 transitions. Word has length 84 [2024-11-02 12:24:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:21,699 INFO L471 AbstractCegarLoop]: Abstraction has 2509 states and 4050 transitions. [2024-11-02 12:24:21,699 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) [2024-11-02 12:24:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 4050 transitions. [2024-11-02 12:24:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-02 12:24:21,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:21,705 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] [2024-11-02 12:24:21,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:24:21,705 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 463826715, now seen corresponding path program 1 times [2024-11-02 12:24:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:21,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673905352] [2024-11-02 12:24:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:24:22,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673905352] [2024-11-02 12:24:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673905352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:22,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:24:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198793072] [2024-11-02 12:24:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:22,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:24:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:24:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:24:22,147 INFO L87 Difference]: Start difference. First operand 2509 states and 4050 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) [2024-11-02 12:24:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:22,692 INFO L93 Difference]: Finished difference Result 4136 states and 6667 transitions. [2024-11-02 12:24:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:24:22,693 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 [2024-11-02 12:24:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:22,712 INFO L225 Difference]: With dead ends: 4136 [2024-11-02 12:24:22,712 INFO L226 Difference]: Without dead ends: 2602 [2024-11-02 12:24:22,719 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 [2024-11-02 12:24:22,720 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 [2024-11-02 12:24:22,721 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] [2024-11-02 12:24:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-11-02 12:24:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2582. [2024-11-02 12:24:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 1848 states have (on average 1.579004329004329) internal successors, (2918), 1941 states have internal predecessors, (2918), 566 states have call successors, (566), 129 states have call predecessors, (566), 167 states have return successors, (664), 572 states have call predecessors, (664), 561 states have call successors, (664) [2024-11-02 12:24:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 4148 transitions. [2024-11-02 12:24:23,108 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 4148 transitions. Word has length 84 [2024-11-02 12:24:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:23,109 INFO L471 AbstractCegarLoop]: Abstraction has 2582 states and 4148 transitions. [2024-11-02 12:24:23,109 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) [2024-11-02 12:24:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 4148 transitions. [2024-11-02 12:24:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-02 12:24:23,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:23,113 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] [2024-11-02 12:24:23,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:24:23,113 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:23,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -229814340, now seen corresponding path program 1 times [2024-11-02 12:24:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528767264] [2024-11-02 12:24:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:24:23,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:23,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528767264] [2024-11-02 12:24:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528767264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:24:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108434905] [2024-11-02 12:24:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:23,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:24:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:24:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:24:23,549 INFO L87 Difference]: Start difference. First operand 2582 states and 4148 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) [2024-11-02 12:24:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:24,119 INFO L93 Difference]: Finished difference Result 4234 states and 6790 transitions. [2024-11-02 12:24:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:24:24,120 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 [2024-11-02 12:24:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:24,140 INFO L225 Difference]: With dead ends: 4234 [2024-11-02 12:24:24,140 INFO L226 Difference]: Without dead ends: 2653 [2024-11-02 12:24:24,148 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 [2024-11-02 12:24:24,149 INFO L432 NwaCegarLoop]: 554 mSDtfsCounter, 0 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:24,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3300 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2024-11-02 12:24:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2593. [2024-11-02 12:24:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 1859 states have (on average 1.5755782678859602) internal successors, (2929), 1941 states have internal predecessors, (2929), 566 states have call successors, (566), 129 states have call predecessors, (566), 167 states have return successors, (664), 583 states have call predecessors, (664), 561 states have call successors, (664) [2024-11-02 12:24:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 4159 transitions. [2024-11-02 12:24:24,449 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 4159 transitions. Word has length 83 [2024-11-02 12:24:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:24,450 INFO L471 AbstractCegarLoop]: Abstraction has 2593 states and 4159 transitions. [2024-11-02 12:24:24,450 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) [2024-11-02 12:24:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 4159 transitions. [2024-11-02 12:24:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-02 12:24:24,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:24,454 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] [2024-11-02 12:24:24,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:24:24,455 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:24,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -986438809, now seen corresponding path program 1 times [2024-11-02 12:24:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021733028] [2024-11-02 12:24:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:24:24,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021733028] [2024-11-02 12:24:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021733028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:24:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800421609] [2024-11-02 12:24:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:24:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:24:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:24:24,910 INFO L87 Difference]: Start difference. First operand 2593 states and 4159 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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)