./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.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_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/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_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/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_d307aab5-13cf-4894-9ab9-3fddc89b2424/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 bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:23:58,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:23:59,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:23:59,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:23:59,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:23:59,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:23:59,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:23:59,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:23:59,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:23:59,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:23:59,076 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:23:59,077 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:23:59,077 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:23:59,078 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:23:59,078 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:23:59,079 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:23:59,079 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:23:59,080 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:23:59,080 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:23:59,081 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:23:59,081 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:23:59,083 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:23:59,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:23:59,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:23:59,084 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:23:59,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:23:59,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:23:59,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:23:59,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:23:59,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:23:59,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:23:59,087 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:23:59,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:23:59,087 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:23:59,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:23:59,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:23:59,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:23:59,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:59,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:23:59,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:23:59,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:23:59,090 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:23:59,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:23:59,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:23:59,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:23:59,090 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:23:59,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:23:59,091 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_d307aab5-13cf-4894-9ab9-3fddc89b2424/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 [2023-12-02 15:23:59,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:23:59,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:23:59,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:23:59,358 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:23:59,359 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:23:59,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-12-02 15:24:02,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:24:02,459 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:24:02,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-12-02 15:24:02,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/data/541b8f366/5f2747a7418b47d7a33212edd0253d41/FLAGc6cf5c007 [2023-12-02 15:24:02,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/data/541b8f366/5f2747a7418b47d7a33212edd0253d41 [2023-12-02 15:24:02,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:24:02,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:24:02,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:24:02,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:24:02,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:24:02,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:24:02" (1/1) ... [2023-12-02 15:24:02,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf2aa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:02, skipping insertion in model container [2023-12-02 15:24:02,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:24:02" (1/1) ... [2023-12-02 15:24:02,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:24:02,790 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_d307aab5-13cf-4894-9ab9-3fddc89b2424/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2023-12-02 15:24:03,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:24:03,022 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:24:03,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-02 15:24:03,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2023-12-02 15:24:03,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [423] [2023-12-02 15:24:03,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [787] [2023-12-02 15:24:03,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1459] [2023-12-02 15:24:03,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3107] [2023-12-02 15:24:03,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3198] [2023-12-02 15:24:03,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3379] [2023-12-02 15:24:03,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3392] [2023-12-02 15:24:03,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3510] [2023-12-02 15:24:03,057 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_d307aab5-13cf-4894-9ab9-3fddc89b2424/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2023-12-02 15:24:03,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:24:03,205 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:24:03,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03 WrapperNode [2023-12-02 15:24:03,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:24:03,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:24:03,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:24:03,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:24:03,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,294 INFO L138 Inliner]: procedures = 98, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 925 [2023-12-02 15:24:03,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:24:03,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:24:03,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:24:03,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:24:03,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:24:03,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:24:03,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:24:03,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:24:03,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (1/1) ... [2023-12-02 15:24:03,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:24:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:03,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:24:03,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:24:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-02 15:24:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-02 15:24:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-02 15:24:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-02 15:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-02 15:24:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-02 15:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 15:24:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 15:24:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-02 15:24:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-02 15:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-02 15:24:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-02 15:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-02 15:24:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-02 15:24:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-02 15:24:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-02 15:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-02 15:24:03,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-02 15:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-02 15:24:03,462 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-02 15:24:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-02 15:24:03,462 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-02 15:24:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:24:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-02 15:24:03,463 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-02 15:24:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-02 15:24:03,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-02 15:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-02 15:24:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-02 15:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-02 15:24:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-02 15:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 15:24:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 15:24:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-02 15:24:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-02 15:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-02 15:24:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-02 15:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-02 15:24:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-02 15:24:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-02 15:24:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-02 15:24:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-02 15:24:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-02 15:24:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-02 15:24:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-02 15:24:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-02 15:24:03,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-02 15:24:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-02 15:24:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-02 15:24:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:24:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-02 15:24:03,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-02 15:24:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-02 15:24:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-02 15:24:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:24:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:24:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-02 15:24:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-02 15:24:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-12-02 15:24:03,468 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-12-02 15:24:03,617 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:24:03,619 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:24:04,666 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:24:05,479 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:24:05,479 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:24:05,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:24:05 BoogieIcfgContainer [2023-12-02 15:24:05,482 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:24:05,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:24:05,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:24:05,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:24:05,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:24:02" (1/3) ... [2023-12-02 15:24:05,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a286ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:24:05, skipping insertion in model container [2023-12-02 15:24:05,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:03" (2/3) ... [2023-12-02 15:24:05,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a286ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:24:05, skipping insertion in model container [2023-12-02 15:24:05,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:24:05" (3/3) ... [2023-12-02 15:24:05,490 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2023-12-02 15:24:05,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:24:05,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:24:05,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:24:05,609 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;@421a3325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:24:05,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:24:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-02 15:24:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 15:24:05,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:05,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:05,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:05,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1712988098, now seen corresponding path program 1 times [2023-12-02 15:24:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:05,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296244768] [2023-12-02 15:24:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:05,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:24:06,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296244768] [2023-12-02 15:24:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296244768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:24:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876189866] [2023-12-02 15:24:06,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:06,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:24:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:24:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:24:06,397 INFO L87 Difference]: Start difference. First operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:24:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:08,828 INFO L93 Difference]: Finished difference Result 1329 states and 2129 transitions. [2023-12-02 15:24:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:24:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2023-12-02 15:24:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:08,854 INFO L225 Difference]: With dead ends: 1329 [2023-12-02 15:24:08,854 INFO L226 Difference]: Without dead ends: 933 [2023-12-02 15:24:08,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:24:08,867 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1701 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:08,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 907 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 15:24:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-02 15:24:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 846. [2023-12-02 15:24:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 589 states have (on average 1.5823429541595926) internal successors, (932), 619 states have internal predecessors, (932), 207 states have call successors, (207), 48 states have call predecessors, (207), 49 states have return successors, (209), 191 states have call predecessors, (209), 202 states have call successors, (209) [2023-12-02 15:24:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1348 transitions. [2023-12-02 15:24:09,009 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1348 transitions. Word has length 54 [2023-12-02 15:24:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:09,010 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1348 transitions. [2023-12-02 15:24:09,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:24:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1348 transitions. [2023-12-02 15:24:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 15:24:09,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:09,024 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, 1] [2023-12-02 15:24:09,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:24:09,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:09,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash 761720527, now seen corresponding path program 1 times [2023-12-02 15:24:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:09,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256446521] [2023-12-02 15:24:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:09,609 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 15:24:09,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:09,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256446521] [2023-12-02 15:24:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256446521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:09,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:24:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494647803] [2023-12-02 15:24:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:24:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:24:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:24:09,613 INFO L87 Difference]: Start difference. First operand 846 states and 1348 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 15:24:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:11,688 INFO L93 Difference]: Finished difference Result 2624 states and 4232 transitions. [2023-12-02 15:24:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:24:11,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 99 [2023-12-02 15:24:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:11,705 INFO L225 Difference]: With dead ends: 2624 [2023-12-02 15:24:11,705 INFO L226 Difference]: Without dead ends: 1802 [2023-12-02 15:24:11,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:24:11,713 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1229 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:11,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1659 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 15:24:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2023-12-02 15:24:11,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1715. [2023-12-02 15:24:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1206 states have (on average 1.5887230514096187) internal successors, (1916), 1262 states have internal predecessors, (1916), 409 states have call successors, (409), 92 states have call predecessors, (409), 99 states have return successors, (436), 384 states have call predecessors, (436), 404 states have call successors, (436) [2023-12-02 15:24:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2761 transitions. [2023-12-02 15:24:11,861 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2761 transitions. Word has length 99 [2023-12-02 15:24:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:11,862 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2761 transitions. [2023-12-02 15:24:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 15:24:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2761 transitions. [2023-12-02 15:24:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 15:24:11,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:11,868 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, 1, 1, 1, 1, 1] [2023-12-02 15:24:11,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:24:11,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:11,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1690285085, now seen corresponding path program 1 times [2023-12-02 15:24:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:11,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296331371] [2023-12-02 15:24:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:12,278 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 15:24:12,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:12,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296331371] [2023-12-02 15:24:12,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296331371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:12,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:12,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:24:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104976774] [2023-12-02 15:24:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:12,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:24:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:24:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:24:12,282 INFO L87 Difference]: Start difference. First operand 1715 states and 2761 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 15:24:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:13,051 INFO L93 Difference]: Finished difference Result 1814 states and 2923 transitions. [2023-12-02 15:24:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:24:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2023-12-02 15:24:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:13,067 INFO L225 Difference]: With dead ends: 1814 [2023-12-02 15:24:13,068 INFO L226 Difference]: Without dead ends: 1799 [2023-12-02 15:24:13,070 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 15:24:13,071 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 729 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1957 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:24:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-12-02 15:24:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1721. [2023-12-02 15:24:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1212 states have (on average 1.5858085808580857) internal successors, (1922), 1268 states have internal predecessors, (1922), 409 states have call successors, (409), 92 states have call predecessors, (409), 99 states have return successors, (436), 384 states have call predecessors, (436), 404 states have call successors, (436) [2023-12-02 15:24:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2767 transitions. [2023-12-02 15:24:13,213 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2767 transitions. Word has length 103 [2023-12-02 15:24:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:13,214 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2767 transitions. [2023-12-02 15:24:13,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 15:24:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2767 transitions. [2023-12-02 15:24:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 15:24:13,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:13,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:13,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:24:13,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:13,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1251418443, now seen corresponding path program 1 times [2023-12-02 15:24:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:13,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435359703] [2023-12-02 15:24:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:13,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:13,855 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 15:24:13,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435359703] [2023-12-02 15:24:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435359703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-02 15:24:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72233993] [2023-12-02 15:24:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:13,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:24:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:24:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:24:13,858 INFO L87 Difference]: Start difference. First operand 1721 states and 2767 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-02 15:24:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:19,142 INFO L93 Difference]: Finished difference Result 4980 states and 7977 transitions. [2023-12-02 15:24:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 15:24:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 108 [2023-12-02 15:24:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:19,173 INFO L225 Difference]: With dead ends: 4980 [2023-12-02 15:24:19,173 INFO L226 Difference]: Without dead ends: 3280 [2023-12-02 15:24:19,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 15:24:19,213 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 2777 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 8612 mSolverCounterSat, 1535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 10147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1535 IncrementalHoareTripleChecker+Valid, 8612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:19,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 3937 Invalid, 10147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1535 Valid, 8612 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 15:24:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2023-12-02 15:24:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2998. [2023-12-02 15:24:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2072 states have (on average 1.5608108108108107) internal successors, (3234), 2169 states have internal predecessors, (3234), 731 states have call successors, (731), 175 states have call predecessors, (731), 194 states have return successors, (782), 697 states have call predecessors, (782), 726 states have call successors, (782) [2023-12-02 15:24:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4747 transitions. [2023-12-02 15:24:19,570 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4747 transitions. Word has length 108 [2023-12-02 15:24:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:19,571 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 4747 transitions. [2023-12-02 15:24:19,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-02 15:24:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4747 transitions. [2023-12-02 15:24:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:24:19,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:19,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:24:19,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:19,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1323553044, now seen corresponding path program 1 times [2023-12-02 15:24:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928981197] [2023-12-02 15:24:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 15:24:22,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928981197] [2023-12-02 15:24:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928981197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910755658] [2023-12-02 15:24:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:22,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:22,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:22,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:24:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:23,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:24:23,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:23,366 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 15:24:23,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910755658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [28] total 30 [2023-12-02 15:24:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271717063] [2023-12-02 15:24:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:24:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:24:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:24:23,369 INFO L87 Difference]: Start difference. First operand 2998 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:24:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:23,738 INFO L93 Difference]: Finished difference Result 3161 states and 5014 transitions. [2023-12-02 15:24:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:24:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 115 [2023-12-02 15:24:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:23,765 INFO L225 Difference]: With dead ends: 3161 [2023-12-02 15:24:23,765 INFO L226 Difference]: Without dead ends: 3146 [2023-12-02 15:24:23,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:24:23,770 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 47 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:23,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1851 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:24:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2023-12-02 15:24:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3012. [2023-12-02 15:24:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2086 states have (on average 1.5570469798657718) internal successors, (3248), 2183 states have internal predecessors, (3248), 731 states have call successors, (731), 175 states have call predecessors, (731), 194 states have return successors, (782), 697 states have call predecessors, (782), 726 states have call successors, (782) [2023-12-02 15:24:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4761 transitions. [2023-12-02 15:24:24,060 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4761 transitions. Word has length 115 [2023-12-02 15:24:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:24,061 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 4761 transitions. [2023-12-02 15:24:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:24:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4761 transitions. [2023-12-02 15:24:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 15:24:24,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:24,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:24,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:24:24,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:24,270 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:24,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1851416189, now seen corresponding path program 1 times [2023-12-02 15:24:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:24,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118470129] [2023-12-02 15:24:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:25,904 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 15:24:25,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118470129] [2023-12-02 15:24:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118470129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398775754] [2023-12-02 15:24:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:25,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:25,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d307aab5-13cf-4894-9ab9-3fddc89b2424/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:24:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:26,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-02 15:24:26,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:28,161 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 15:24:28,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:34,358 WARN L293 SmtUtils]: Spent 1.90m on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 15:28:32,403 WARN L293 SmtUtils]: Spent 1.96m on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 15:28:33,456 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 15:28:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398775754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:28:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135102234] [2023-12-02 15:28:33,476 INFO L159 IcfgInterpreter]: Started Sifa with 115 locations of interest [2023-12-02 15:28:33,476 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:28:33,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:28:33,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:28:33,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:28:54,088 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 444 for LOIs [2023-12-02 15:28:54,361 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 590 for LOIs [2023-12-02 15:29:25,163 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 590 for LOIs [2023-12-02 15:29:39,158 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 574 for LOIs [2023-12-02 15:30:10,010 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 457 for LOIs [2023-12-02 15:30:17,012 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 458 for LOIs [2023-12-02 15:30:25,112 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 29 for LOIs [2023-12-02 15:30:25,140 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 441 for LOIs [2023-12-02 15:30:25,519 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 22 for LOIs [2023-12-02 15:30:25,522 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 595 for LOIs [2023-12-02 15:30:38,915 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 421 for LOIs [2023-12-02 15:30:39,258 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 476 for LOIs [2023-12-02 15:30:51,976 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 472 for LOIs [2023-12-02 15:30:53,268 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 558 for LOIs [2023-12-02 15:31:04,538 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 650 for LOIs [2023-12-02 15:31:09,504 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 527 for LOIs [2023-12-02 15:31:11,140 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:31:35,827 WARN L293 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 571 DAG size of output: 537 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:32:00,128 WARN L293 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 650 DAG size of output: 610 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:33:01,295 WARN L293 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 458 DAG size of output: 458 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:34:14,196 WARN L293 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 609 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:34:22,255 WARN L293 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 609 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:36:57,367 WARN L293 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 516 DAG size of output: 491 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:37:04,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33313#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (not (= ~currentFloorID~0 0)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (not (= ~currentFloorID~0 1)) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= ~calls_3~0 0) (= 4 (select |#length| 26)) (not (= ~currentFloorID~0 4)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select |#valid| 37) 1) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 37) 9) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (not (= ~currentFloorID~0 2)) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= ~blocked~0 0) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (not (= ~currentFloorID~0 3)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= ~calls_2~0 0) (= ~calls_4~0 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2023-12-02 15:37:04,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:37:04,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:37:04,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 20] total 60 [2023-12-02 15:37:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408122953] [2023-12-02 15:37:04,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:37:04,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-02 15:37:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-02 15:37:04,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=20924, Unknown=0, NotChecked=0, Total=22650 [2023-12-02 15:37:04,626 INFO L87 Difference]: Start difference. First operand 3012 states and 4761 transitions. Second operand has 60 states, 43 states have (on average 4.372093023255814) internal successors, (188), 46 states have internal predecessors, (188), 23 states have call successors, (63), 11 states have call predecessors, (63), 25 states have return successors, (64), 28 states have call predecessors, (64), 22 states have call successors, (64)