./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/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_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/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_8743cae7-249c-4be1-a369-7be6c1fd823f/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 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:53:25,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:53:25,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:53:25,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:53:25,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:53:25,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:53:25,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:53:25,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:53:25,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:53:25,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:53:25,825 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:53:25,825 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:53:25,826 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:53:25,826 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:53:25,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:53:25,827 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:53:25,828 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:53:25,828 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:53:25,829 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:53:25,829 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:53:25,830 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:53:25,831 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:53:25,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:53:25,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:53:25,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:53:25,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:53:25,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:53:25,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:53:25,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:53:25,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:53:25,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:53:25,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:53:25,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:53:25,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:53:25,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:53:25,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:53:25,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:53:25,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:53:25,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:53:25,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:53:25,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:53:25,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:53:25,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:53:25,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:53:25,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:53:25,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:53:25,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:53:25,840 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_8743cae7-249c-4be1-a369-7be6c1fd823f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ed4163e8f042a84d9cdccd4fee3ee0ba89fdce83cd991779acec4a51d9a650c [2023-12-02 17:53:26,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:53:26,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:53:26,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:53:26,096 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:53:26,096 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:53:26,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2023-12-02 17:53:28,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:53:29,228 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:53:29,229 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2023-12-02 17:53:29,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/data/afff6ad78/f1cc82cfee7147c2a4e296549a2ef16b/FLAG89f3c8a5f [2023-12-02 17:53:29,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/data/afff6ad78/f1cc82cfee7147c2a4e296549a2ef16b [2023-12-02 17:53:29,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:53:29,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:53:29,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:53:29,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:53:29,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:53:29,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:53:29" (1/1) ... [2023-12-02 17:53:29,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a382303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:29, skipping insertion in model container [2023-12-02 17:53:29,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:53:29" (1/1) ... [2023-12-02 17:53:29,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:53:29,851 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_8743cae7-249c-4be1-a369-7be6c1fd823f/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2023-12-02 17:53:29,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:53:29,870 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:53:29,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2023-12-02 17:53:29,883 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [169] [2023-12-02 17:53:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [268] [2023-12-02 17:53:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [935] [2023-12-02 17:53:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [976] [2023-12-02 17:53:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [994] [2023-12-02 17:53:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1346] [2023-12-02 17:53:29,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1712] [2023-12-02 17:53:29,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1747] [2023-12-02 17:53:29,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3244] [2023-12-02 17:53:29,976 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_8743cae7-249c-4be1-a369-7be6c1fd823f/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2023-12-02 17:53:29,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:53:30,006 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:53:30,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30 WrapperNode [2023-12-02 17:53:30,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:53:30,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:53:30,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:53:30,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:53:30,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,091 INFO L138 Inliner]: procedures = 89, calls = 329, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 1002 [2023-12-02 17:53:30,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:53:30,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:53:30,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:53:30,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:53:30,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:53:30,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:53:30,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:53:30,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:53:30,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (1/1) ... [2023-12-02 17:53:30,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:53:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:30,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:53:30,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:53:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:53:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-02 17:53:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-02 17:53:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-02 17:53:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-02 17:53:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-02 17:53:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-02 17:53:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-02 17:53:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-02 17:53:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-02 17:53:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-02 17:53:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-02 17:53:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-02 17:53:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 17:53:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 17:53:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 17:53:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 17:53:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-02 17:53:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-02 17:53:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-02 17:53:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-02 17:53:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-02 17:53:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-02 17:53:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-02 17:53:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-02 17:53:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-02 17:53:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-02 17:53:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-02 17:53:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-02 17:53:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-02 17:53:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-02 17:53:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-02 17:53:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-02 17:53:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-02 17:53:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-02 17:53:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-12-02 17:53:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-12-02 17:53:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:53:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-02 17:53:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-02 17:53:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-02 17:53:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-02 17:53:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-02 17:53:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-02 17:53:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:53:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:53:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-02 17:53:30,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-02 17:53:30,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:53:30,423 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:53:31,354 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:53:32,089 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:53:32,089 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:53:32,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:53:32 BoogieIcfgContainer [2023-12-02 17:53:32,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:53:32,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:53:32,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:53:32,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:53:32,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:53:29" (1/3) ... [2023-12-02 17:53:32,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:53:32, skipping insertion in model container [2023-12-02 17:53:32,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:30" (2/3) ... [2023-12-02 17:53:32,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a67f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:53:32, skipping insertion in model container [2023-12-02 17:53:32,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:53:32" (3/3) ... [2023-12-02 17:53:32,100 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2023-12-02 17:53:32,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:53:32,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:53:32,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:53:32,186 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;@56af0f66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:53:32,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:53:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 232 states have (on average 1.5775862068965518) internal successors, (366), 248 states have internal predecessors, (366), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 17:53:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 17:53:32,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:32,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:32,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:32,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 966726948, now seen corresponding path program 1 times [2023-12-02 17:53:32,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:32,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838769656] [2023-12-02 17:53:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:32,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:32,879 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 17:53:32,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838769656] [2023-12-02 17:53:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838769656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:53:32,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753518516] [2023-12-02 17:53:32,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:32,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:53:32,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:53:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:32,915 INFO L87 Difference]: Start difference. First operand has 347 states, 232 states have (on average 1.5775862068965518) internal successors, (366), 248 states have internal predecessors, (366), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 17:53:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:33,502 INFO L93 Difference]: Finished difference Result 1020 states and 1633 transitions. [2023-12-02 17:53:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:53:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 72 [2023-12-02 17:53:33,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:33,526 INFO L225 Difference]: With dead ends: 1020 [2023-12-02 17:53:33,526 INFO L226 Difference]: Without dead ends: 674 [2023-12-02 17:53:33,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:53:33,540 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1155 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:33,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2446 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:53:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-02 17:53:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 664. [2023-12-02 17:53:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 448 states have (on average 1.5691964285714286) internal successors, (703), 476 states have internal predecessors, (703), 174 states have call successors, (174), 42 states have call predecessors, (174), 41 states have return successors, (178), 170 states have call predecessors, (178), 172 states have call successors, (178) [2023-12-02 17:53:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1055 transitions. [2023-12-02 17:53:33,711 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1055 transitions. Word has length 72 [2023-12-02 17:53:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:33,712 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1055 transitions. [2023-12-02 17:53:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 17:53:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1055 transitions. [2023-12-02 17:53:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 17:53:33,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:33,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:53:33,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -579528819, now seen corresponding path program 1 times [2023-12-02 17:53:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236776680] [2023-12-02 17:53:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:53:34,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:34,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236776680] [2023-12-02 17:53:34,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236776680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:34,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:34,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:53:34,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722497871] [2023-12-02 17:53:34,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:34,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:53:34,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:53:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:53:34,054 INFO L87 Difference]: Start difference. First operand 664 states and 1055 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:53:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:34,692 INFO L93 Difference]: Finished difference Result 1009 states and 1605 transitions. [2023-12-02 17:53:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:53:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 73 [2023-12-02 17:53:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:34,700 INFO L225 Difference]: With dead ends: 1009 [2023-12-02 17:53:34,700 INFO L226 Difference]: Without dead ends: 676 [2023-12-02 17:53:34,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 17:53:34,704 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 515 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:34,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 2032 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:53:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-02 17:53:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 670. [2023-12-02 17:53:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 451 states have (on average 1.565410199556541) internal successors, (706), 481 states have internal predecessors, (706), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (183), 170 states have call predecessors, (183), 174 states have call successors, (183) [2023-12-02 17:53:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1065 transitions. [2023-12-02 17:53:34,770 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1065 transitions. Word has length 73 [2023-12-02 17:53:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:34,771 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1065 transitions. [2023-12-02 17:53:34,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:53:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1065 transitions. [2023-12-02 17:53:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:53:34,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:34,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:53:34,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:34,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -169616199, now seen corresponding path program 1 times [2023-12-02 17:53:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387338653] [2023-12-02 17:53:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:53:35,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387338653] [2023-12-02 17:53:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387338653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:35,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:35,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:53:35,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212917749] [2023-12-02 17:53:35,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:35,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:53:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:53:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:53:35,079 INFO L87 Difference]: Start difference. First operand 670 states and 1065 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 17:53:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:35,679 INFO L93 Difference]: Finished difference Result 764 states and 1188 transitions. [2023-12-02 17:53:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:53:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 77 [2023-12-02 17:53:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:35,692 INFO L225 Difference]: With dead ends: 764 [2023-12-02 17:53:35,692 INFO L226 Difference]: Without dead ends: 762 [2023-12-02 17:53:35,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:35,695 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 628 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:35,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1582 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:53:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-02 17:53:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 755. [2023-12-02 17:53:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 502 states have (on average 1.5318725099601593) internal successors, (769), 532 states have internal predecessors, (769), 198 states have call successors, (198), 56 states have call predecessors, (198), 54 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1178 transitions. [2023-12-02 17:53:35,744 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1178 transitions. Word has length 77 [2023-12-02 17:53:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:35,745 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1178 transitions. [2023-12-02 17:53:35,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 17:53:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1178 transitions. [2023-12-02 17:53:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 17:53:35,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:35,751 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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 17:53:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:53:35,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:35,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash -983449359, now seen corresponding path program 1 times [2023-12-02 17:53:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035596902] [2023-12-02 17:53:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-02 17:53:35,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035596902] [2023-12-02 17:53:35,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035596902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:35,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:35,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158541788] [2023-12-02 17:53:35,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:35,902 INFO L87 Difference]: Start difference. First operand 755 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 17:53:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:36,078 INFO L93 Difference]: Finished difference Result 1536 states and 2426 transitions. [2023-12-02 17:53:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2023-12-02 17:53:36,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:36,085 INFO L225 Difference]: With dead ends: 1536 [2023-12-02 17:53:36,085 INFO L226 Difference]: Without dead ends: 793 [2023-12-02 17:53:36,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:53:36,092 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 54 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:36,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1509 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:36,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-02 17:53:36,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 759. [2023-12-02 17:53:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 506 states have (on average 1.5276679841897234) internal successors, (773), 536 states have internal predecessors, (773), 198 states have call successors, (198), 56 states have call predecessors, (198), 54 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1182 transitions. [2023-12-02 17:53:36,136 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1182 transitions. Word has length 108 [2023-12-02 17:53:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:36,137 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1182 transitions. [2023-12-02 17:53:36,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 17:53:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1182 transitions. [2023-12-02 17:53:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-02 17:53:36,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:36,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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 17:53:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:53:36,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:36,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1025201024, now seen corresponding path program 1 times [2023-12-02 17:53:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:36,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259611032] [2023-12-02 17:53:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:53:36,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259611032] [2023-12-02 17:53:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259611032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135720309] [2023-12-02 17:53:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:36,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:36,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:36,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:53:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:36,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:36,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 17:53:36,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:36,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135720309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:36,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:53:36,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 17:53:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928047658] [2023-12-02 17:53:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:36,669 INFO L87 Difference]: Start difference. First operand 759 states and 1182 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:36,963 INFO L93 Difference]: Finished difference Result 1584 states and 2514 transitions. [2023-12-02 17:53:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2023-12-02 17:53:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:36,970 INFO L225 Difference]: With dead ends: 1584 [2023-12-02 17:53:36,970 INFO L226 Difference]: Without dead ends: 837 [2023-12-02 17:53:36,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:36,975 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 213 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:36,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1296 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-12-02 17:53:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 837. [2023-12-02 17:53:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 582 states have (on average 1.5790378006872852) internal successors, (919), 612 states have internal predecessors, (919), 198 states have call successors, (198), 58 states have call predecessors, (198), 56 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1328 transitions. [2023-12-02 17:53:37,016 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1328 transitions. Word has length 111 [2023-12-02 17:53:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:37,016 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1328 transitions. [2023-12-02 17:53:37,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1328 transitions. [2023-12-02 17:53:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 17:53:37,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:37,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:37,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:53:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:37,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:37,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash -32705785, now seen corresponding path program 1 times [2023-12-02 17:53:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287815199] [2023-12-02 17:53:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 17:53:37,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287815199] [2023-12-02 17:53:37,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287815199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427974455] [2023-12-02 17:53:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:37,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:37,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:37,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:53:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:37,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:37,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-02 17:53:37,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:37,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427974455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:37,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:53:37,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 17:53:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342187] [2023-12-02 17:53:37,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:37,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:37,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:37,780 INFO L87 Difference]: Start difference. First operand 837 states and 1328 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:38,121 INFO L93 Difference]: Finished difference Result 1740 states and 2804 transitions. [2023-12-02 17:53:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 116 [2023-12-02 17:53:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:38,129 INFO L225 Difference]: With dead ends: 1740 [2023-12-02 17:53:38,129 INFO L226 Difference]: Without dead ends: 915 [2023-12-02 17:53:38,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:38,135 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 211 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:38,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1296 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:53:38,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-02 17:53:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2023-12-02 17:53:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 658 states have (on average 1.6185410334346504) internal successors, (1065), 688 states have internal predecessors, (1065), 198 states have call successors, (198), 60 states have call predecessors, (198), 58 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1474 transitions. [2023-12-02 17:53:38,186 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1474 transitions. Word has length 116 [2023-12-02 17:53:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1474 transitions. [2023-12-02 17:53:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1474 transitions. [2023-12-02 17:53:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 17:53:38,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:38,191 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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] [2023-12-02 17:53:38,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 17:53:38,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:38,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1039915273, now seen corresponding path program 1 times [2023-12-02 17:53:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68336534] [2023-12-02 17:53:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 17:53:38,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:38,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68336534] [2023-12-02 17:53:38,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68336534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:38,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474926332] [2023-12-02 17:53:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:38,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:38,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:38,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:38,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:53:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:38,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:38,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 17:53:38,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:38,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474926332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:53:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 17:53:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133592903] [2023-12-02 17:53:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:38,879 INFO L87 Difference]: Start difference. First operand 915 states and 1474 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:39,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:39,163 INFO L93 Difference]: Finished difference Result 1896 states and 3094 transitions. [2023-12-02 17:53:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:39,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 120 [2023-12-02 17:53:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:39,173 INFO L225 Difference]: With dead ends: 1896 [2023-12-02 17:53:39,173 INFO L226 Difference]: Without dead ends: 993 [2023-12-02 17:53:39,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:39,204 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 209 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:39,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1296 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2023-12-02 17:53:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2023-12-02 17:53:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 734 states have (on average 1.6498637602179838) internal successors, (1211), 764 states have internal predecessors, (1211), 198 states have call successors, (198), 62 states have call predecessors, (198), 60 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1620 transitions. [2023-12-02 17:53:39,256 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1620 transitions. Word has length 120 [2023-12-02 17:53:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:39,256 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1620 transitions. [2023-12-02 17:53:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1620 transitions. [2023-12-02 17:53:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 17:53:39,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:39,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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] [2023-12-02 17:53:39,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:53:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:39,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1574879712, now seen corresponding path program 1 times [2023-12-02 17:53:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837688008] [2023-12-02 17:53:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-02 17:53:39,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837688008] [2023-12-02 17:53:39,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837688008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446461753] [2023-12-02 17:53:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:39,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:39,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:53:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:39,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:39,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 17:53:39,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:39,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446461753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:39,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:53:39,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 17:53:39,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912742852] [2023-12-02 17:53:39,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:39,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:39,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:39,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:39,948 INFO L87 Difference]: Start difference. First operand 993 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:40,217 INFO L93 Difference]: Finished difference Result 2052 states and 3384 transitions. [2023-12-02 17:53:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 123 [2023-12-02 17:53:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:40,226 INFO L225 Difference]: With dead ends: 2052 [2023-12-02 17:53:40,226 INFO L226 Difference]: Without dead ends: 1071 [2023-12-02 17:53:40,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:40,232 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 207 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:40,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1296 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-02 17:53:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-02 17:53:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 810 states have (on average 1.6753086419753087) internal successors, (1357), 840 states have internal predecessors, (1357), 198 states have call successors, (198), 64 states have call predecessors, (198), 62 states have return successors, (211), 190 states have call predecessors, (211), 195 states have call successors, (211) [2023-12-02 17:53:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1766 transitions. [2023-12-02 17:53:40,270 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1766 transitions. Word has length 123 [2023-12-02 17:53:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:40,271 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1766 transitions. [2023-12-02 17:53:40,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 17:53:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1766 transitions. [2023-12-02 17:53:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 17:53:40,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:40,276 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 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 17:53:40,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:53:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:40,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:40,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash 602917230, now seen corresponding path program 1 times [2023-12-02 17:53:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188780175] [2023-12-02 17:53:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:53:40,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:40,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188780175] [2023-12-02 17:53:40,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188780175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:40,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84756378] [2023-12-02 17:53:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:40,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:40,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:40,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:40,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8743cae7-249c-4be1-a369-7be6c1fd823f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:53:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:41,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 17:53:41,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 17:53:42,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:54:15,366 WARN L293 SmtUtils]: Spent 32.28s on a formula simplification. DAG size of input: 766 DAG size of output: 43 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:54:48,549 WARN L293 SmtUtils]: Spent 32.30s on a formula simplification. DAG size of input: 766 DAG size of output: 43 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:56:38,852 WARN L293 SmtUtils]: Spent 1.82m 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 17:57:10,738 WARN L293 SmtUtils]: Spent 30.68s on a formula simplification. DAG size of input: 766 DAG size of output: 43 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:57:41,570 WARN L293 SmtUtils]: Spent 30.48s on a formula simplification. DAG size of input: 766 DAG size of output: 43 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 17:57:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-02 17:57:41,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84756378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:57:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376225059] [2023-12-02 17:57:41,702 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2023-12-02 17:57:41,703 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:57:41,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:57:41,710 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:57:41,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:57:48,969 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 565 for LOIs [2023-12-02 17:58:00,415 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 569 for LOIs [2023-12-02 17:58:03,359 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 560 for LOIs [2023-12-02 18:01:26,423 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 580 for LOIs [2023-12-02 18:01:28,945 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__base with input of size 429 for LOIs [2023-12-02 18:01:31,783 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 580 for LOIs [2023-12-02 18:01:55,996 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 53 for LOIs [2023-12-02 18:01:56,047 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 569 for LOIs [2023-12-02 18:02:11,560 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 497 for LOIs [2023-12-02 18:02:12,032 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 596 for LOIs [2023-12-02 18:02:15,130 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:02:25,405 WARN L293 SmtUtils]: Spent 9.85s on a formula simplification. DAG size of input: 618 DAG size of output: 593 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:03:29,773 WARN L293 SmtUtils]: Spent 18.24s on a formula simplification. DAG size of input: 580 DAG size of output: 553 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:00,428 WARN L293 SmtUtils]: Spent 7.47s on a formula simplification that was a NOOP. DAG size: 606 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:07,840 WARN L293 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 611 DAG size of output: 608 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:15,246 WARN L293 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 612 DAG size of output: 606 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:25,349 WARN L293 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 614 DAG size of output: 589 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:35,531 WARN L293 SmtUtils]: Spent 9.44s on a formula simplification. DAG size of input: 618 DAG size of output: 593 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:04:49,884 WARN L293 SmtUtils]: Spent 13.45s on a formula simplification. DAG size of input: 569 DAG size of output: 563 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:05:03,949 WARN L293 SmtUtils]: Spent 13.22s on a formula simplification. DAG size of input: 567 DAG size of output: 567 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:05:16,362 WARN L293 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:05:26,805 WARN L293 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 620 DAG size of output: 595 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:05:40,642 WARN L293 SmtUtils]: Spent 9.67s on a formula simplification. DAG size of input: 624 DAG size of output: 599 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:05:51,264 WARN L293 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:06:05,404 WARN L293 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 626 DAG size of output: 601 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:06:16,231 WARN L293 SmtUtils]: Spent 9.80s on a formula simplification. DAG size of input: 624 DAG size of output: 599 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:06:30,474 WARN L293 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 628 DAG size of output: 603 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:06:41,422 WARN L293 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 626 DAG size of output: 601 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:06:52,285 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 630 DAG size of output: 605 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:03,226 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 628 DAG size of output: 603 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:14,223 WARN L293 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 632 DAG size of output: 607 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:25,194 WARN L293 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 630 DAG size of output: 605 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:36,398 WARN L293 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 596 DAG size of output: 570 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:07:47,470 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 598 DAG size of output: 572 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)