./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:16:56,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:16:57,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:16:57,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:16:57,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:16:57,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:16:57,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:16:57,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:16:57,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:16:57,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:16:57,067 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:16:57,067 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:16:57,068 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:16:57,068 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:16:57,069 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:16:57,069 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:16:57,070 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:16:57,071 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:16:57,071 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:16:57,072 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:16:57,072 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:16:57,075 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:16:57,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:16:57,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:16:57,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:16:57,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:16:57,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:16:57,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:16:57,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:16:57,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:16:57,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:16:57,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:16:57,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:16:57,080 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:16:57,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:16:57,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:16:57,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:16:57,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:16:57,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:16:57,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:16:57,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:16:57,082 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:16:57,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:16:57,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:16:57,083 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:16:57,083 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:16:57,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:16:57,083 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_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2023-12-02 17:16:57,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:16:57,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:16:57,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:16:57,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:16:57,390 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:16:57,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2023-12-02 17:17:00,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:17:00,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:17:00,633 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2023-12-02 17:17:00,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/data/5e3b4d200/8d30a5b4c15e4d4c97488ded3b21ca81/FLAGccedaa588 [2023-12-02 17:17:00,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/data/5e3b4d200/8d30a5b4c15e4d4c97488ded3b21ca81 [2023-12-02 17:17:00,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:17:00,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:17:00,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:00,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:17:00,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:17:00,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:00" (1/1) ... [2023-12-02 17:17:00,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52dc2570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:00, skipping insertion in model container [2023-12-02 17:17:00,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:00" (1/1) ... [2023-12-02 17:17:00,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:17:01,144 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2023-12-02 17:17:01,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:01,262 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:17:01,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-12-02 17:17:01,272 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2023-12-02 17:17:01,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [185] [2023-12-02 17:17:01,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [370] [2023-12-02 17:17:01,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1901] [2023-12-02 17:17:01,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1939] [2023-12-02 17:17:01,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1948] [2023-12-02 17:17:01,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2023-12-02 17:17:01,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2407] [2023-12-02 17:17:01,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2757] [2023-12-02 17:17:01,332 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2023-12-02 17:17:01,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:01,397 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:17:01,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01 WrapperNode [2023-12-02 17:17:01,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:01,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:01,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:17:01,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:17:01,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,485 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1117 [2023-12-02 17:17:01,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:01,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:17:01,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:17:01,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:17:01,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:17:01,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:17:01,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:17:01,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:17:01,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (1/1) ... [2023-12-02 17:17:01,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:17:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:01,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:17:01,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:17:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-02 17:17:01,680 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-02 17:17:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:17:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-02 17:17:01,681 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-02 17:17:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-02 17:17:01,681 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-02 17:17:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-02 17:17:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-02 17:17:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-02 17:17:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-02 17:17:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-02 17:17:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-02 17:17:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 17:17:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 17:17:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 17:17:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 17:17:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-02 17:17:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-02 17:17:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-02 17:17:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-02 17:17:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-02 17:17:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-02 17:17:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-02 17:17:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-02 17:17:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-02 17:17:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-02 17:17:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-02 17:17:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-02 17:17:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-02 17:17:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-02 17:17:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-12-02 17:17:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-12-02 17:17:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-02 17:17:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-02 17:17:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-02 17:17:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-02 17:17:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-02 17:17:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-02 17:17:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-02 17:17:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-02 17:17:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:17:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-02 17:17:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-02 17:17:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-02 17:17:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-02 17:17:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-02 17:17:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-02 17:17:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:17:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:17:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-02 17:17:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-02 17:17:01,855 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:17:01,859 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:17:02,887 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:17:03,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:17:03,795 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:17:03,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:03 BoogieIcfgContainer [2023-12-02 17:17:03,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:17:03,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:17:03,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:17:03,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:17:03,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:17:00" (1/3) ... [2023-12-02 17:17:03,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7c001b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:03, skipping insertion in model container [2023-12-02 17:17:03,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:01" (2/3) ... [2023-12-02 17:17:03,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7c001b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:03, skipping insertion in model container [2023-12-02 17:17:03,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:03" (3/3) ... [2023-12-02 17:17:03,806 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2023-12-02 17:17:03,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:17:03,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:17:03,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:17:03,903 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a76e9ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:17:03,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:17:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-02 17:17:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 17:17:03,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:03,939 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:03,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:03,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1129105543, now seen corresponding path program 1 times [2023-12-02 17:17:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024323357] [2023-12-02 17:17:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:04,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024323357] [2023-12-02 17:17:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024323357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:04,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:17:04,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:17:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136955338] [2023-12-02 17:17:04,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:17:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:04,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:17:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:17:04,500 INFO L87 Difference]: Start difference. First operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 17:17:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:04,653 INFO L93 Difference]: Finished difference Result 393 states and 623 transitions. [2023-12-02 17:17:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:17:04,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2023-12-02 17:17:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:04,674 INFO L225 Difference]: With dead ends: 393 [2023-12-02 17:17:04,674 INFO L226 Difference]: Without dead ends: 371 [2023-12-02 17:17:04,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:17:04,680 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:04,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:17:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-02 17:17:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-12-02 17:17:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 17:17:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 585 transitions. [2023-12-02 17:17:04,756 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 585 transitions. Word has length 88 [2023-12-02 17:17:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:04,758 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 585 transitions. [2023-12-02 17:17:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 17:17:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 585 transitions. [2023-12-02 17:17:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 17:17:04,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:04,766 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:04,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:17:04,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:04,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1956871652, now seen corresponding path program 1 times [2023-12-02 17:17:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881216107] [2023-12-02 17:17:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:05,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:05,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881216107] [2023-12-02 17:17:05,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881216107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:05,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:17:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:17:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295663929] [2023-12-02 17:17:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:17:05,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:17:05,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:17:05,397 INFO L87 Difference]: Start difference. First operand 371 states and 585 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 17:17:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:07,946 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2023-12-02 17:17:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:17:07,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-12-02 17:17:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:07,958 INFO L225 Difference]: With dead ends: 1130 [2023-12-02 17:17:07,958 INFO L226 Difference]: Without dead ends: 782 [2023-12-02 17:17:07,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:17:07,966 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1142 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:07,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1605 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 17:17:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-02 17:17:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 733. [2023-12-02 17:17:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 504 states have (on average 1.5992063492063493) internal successors, (806), 537 states have internal predecessors, (806), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-12-02 17:17:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1177 transitions. [2023-12-02 17:17:08,061 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1177 transitions. Word has length 89 [2023-12-02 17:17:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1177 transitions. [2023-12-02 17:17:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 17:17:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1177 transitions. [2023-12-02 17:17:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 17:17:08,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:08,067 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:08,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:17:08,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:08,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -822961890, now seen corresponding path program 1 times [2023-12-02 17:17:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176919386] [2023-12-02 17:17:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:08,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176919386] [2023-12-02 17:17:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176919386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:08,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:17:08,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:17:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346386589] [2023-12-02 17:17:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:08,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:17:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:17:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:17:08,467 INFO L87 Difference]: Start difference. First operand 733 states and 1177 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:17:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:09,213 INFO L93 Difference]: Finished difference Result 804 states and 1289 transitions. [2023-12-02 17:17:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:17:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-12-02 17:17:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:09,223 INFO L225 Difference]: With dead ends: 804 [2023-12-02 17:17:09,223 INFO L226 Difference]: Without dead ends: 789 [2023-12-02 17:17:09,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:17:09,226 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 678 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:09,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1817 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:17:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2023-12-02 17:17:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 737. [2023-12-02 17:17:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.594488188976378) internal successors, (810), 541 states have internal predecessors, (810), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-12-02 17:17:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1181 transitions. [2023-12-02 17:17:09,297 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1181 transitions. Word has length 93 [2023-12-02 17:17:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:09,298 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1181 transitions. [2023-12-02 17:17:09,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:17:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1181 transitions. [2023-12-02 17:17:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 17:17:09,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:09,303 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:09,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:17:09,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:09,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash -774114563, now seen corresponding path program 1 times [2023-12-02 17:17:09,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:09,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818018267] [2023-12-02 17:17:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:09,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:09,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818018267] [2023-12-02 17:17:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818018267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:09,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:17:09,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:17:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393104207] [2023-12-02 17:17:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:17:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:17:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:17:09,654 INFO L87 Difference]: Start difference. First operand 737 states and 1181 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 17:17:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:09,839 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2023-12-02 17:17:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:17:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2023-12-02 17:17:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:09,847 INFO L225 Difference]: With dead ends: 756 [2023-12-02 17:17:09,847 INFO L226 Difference]: Without dead ends: 741 [2023-12-02 17:17:09,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:17:09,850 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 30 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:09,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2184 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:17:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-02 17:17:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2023-12-02 17:17:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.5905511811023623) internal successors, (808), 541 states have internal predecessors, (808), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-12-02 17:17:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1179 transitions. [2023-12-02 17:17:09,921 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1179 transitions. Word has length 98 [2023-12-02 17:17:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:09,922 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1179 transitions. [2023-12-02 17:17:09,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 17:17:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1179 transitions. [2023-12-02 17:17:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 17:17:09,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:09,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:17:09,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:09,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1643566318, now seen corresponding path program 1 times [2023-12-02 17:17:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219950964] [2023-12-02 17:17:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:13,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219950964] [2023-12-02 17:17:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219950964] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:17:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458761915] [2023-12-02 17:17:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:13,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:13,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:17:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:14,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:17:14,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:17:14,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:17:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458761915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:17:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [23] total 25 [2023-12-02 17:17:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51147405] [2023-12-02 17:17:14,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:17:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:17:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:17:14,283 INFO L87 Difference]: Start difference. First operand 737 states and 1179 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-02 17:17:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:14,491 INFO L93 Difference]: Finished difference Result 820 states and 1303 transitions. [2023-12-02 17:17:14,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:17:14,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 105 [2023-12-02 17:17:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:14,498 INFO L225 Difference]: With dead ends: 820 [2023-12-02 17:17:14,499 INFO L226 Difference]: Without dead ends: 805 [2023-12-02 17:17:14,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2023-12-02 17:17:14,501 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 44 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:14,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1715 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:17:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-02 17:17:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 741. [2023-12-02 17:17:14,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 512 states have (on average 1.5859375) internal successors, (812), 545 states have internal predecessors, (812), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-12-02 17:17:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1183 transitions. [2023-12-02 17:17:14,549 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1183 transitions. Word has length 105 [2023-12-02 17:17:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:14,550 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1183 transitions. [2023-12-02 17:17:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-02 17:17:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1183 transitions. [2023-12-02 17:17:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 17:17:14,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:14,554 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:14,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:17:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:14,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:17:14,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:14,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1799517386, now seen corresponding path program 1 times [2023-12-02 17:17:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908973330] [2023-12-02 17:17:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-02 17:17:16,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:17:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908973330] [2023-12-02 17:17:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908973330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:17:16,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870731941] [2023-12-02 17:17:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:16,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:16,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:16,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:16,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_855ce8af-15fa-48e9-b30e-f0c027d0f3fb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:17:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:16,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 75 conjunts are in the unsatisfiable core [2023-12-02 17:17:16,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 17:17:18,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:19:21,378 WARN L293 SmtUtils]: Spent 1.86m on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:21:11,466 WARN L293 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:21:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 17:21:13,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870731941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:13,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [926002365] [2023-12-02 17:21:13,122 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-12-02 17:21:13,122 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:21:13,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:21:13,132 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:21:13,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:22:12,520 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 564 for LOIs [2023-12-02 17:22:15,005 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 576 for LOIs [2023-12-02 17:25:52,005 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 576 for LOIs [2023-12-02 17:26:22,220 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2023-12-02 17:26:28,635 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 448 for LOIs [2023-12-02 17:26:36,043 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 18 for LOIs [2023-12-02 17:26:36,065 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 53 for LOIs [2023-12-02 17:26:36,073 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 585 for LOIs [2023-12-02 17:26:48,978 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 541 for LOIs [2023-12-02 17:26:52,200 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 466 for LOIs [2023-12-02 17:27:03,903 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 462 for LOIs [2023-12-02 17:27:05,105 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2023-12-02 17:27:15,431 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 640 for LOIs [2023-12-02 17:27:20,083 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 517 for LOIs [2023-12-02 17:27:21,819 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:27:46,690 WARN L293 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 561 DAG size of output: 527 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:28:10,317 WARN L293 SmtUtils]: Spent 12.46s on a formula simplification. DAG size of input: 640 DAG size of output: 600 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:28:46,963 WARN L293 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 448 DAG size of output: 448 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:29:56,901 WARN L293 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 611 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:30:04,969 WARN L293 SmtUtils]: Spent 7.15s on a formula simplification that was a NOOP. DAG size: 611 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:30:57,025 WARN L293 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 575 DAG size of output: 536 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:31:07,227 WARN L293 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 577 DAG size of output: 538 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)