./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:05:50,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:05:50,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:05:50,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:05:50,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:05:50,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:05:50,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:05:50,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:05:50,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:05:50,715 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:05:50,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:05:50,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:05:50,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:05:50,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:05:50,719 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:05:50,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:05:50,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:05:50,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:05:50,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:05:50,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:05:50,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:05:50,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:05:50,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:05:50,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:05:50,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:05:50,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:05:50,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:05:50,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:05:50,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:05:50,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:05:50,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:05:50,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:50,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:05:50,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:05:50,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:05:50,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:05:50,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:05:50,731 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:05:50,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:05:50,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:05:50,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:05:50,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:05:50,733 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d9d31939acfea5ee9b43b1f06257671943c7251c27c351c5e445aa6495fd098 [2023-11-21 22:05:50,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:05:51,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:05:51,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:05:51,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:05:51,009 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:05:51,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2023-11-21 22:05:54,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:05:54,510 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:05:54,514 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c [2023-11-21 22:05:54,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/data/ecfb8f7df/ce24eb80e515401d81e372cf7f2188fc/FLAG6e1fb8653 [2023-11-21 22:05:54,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/data/ecfb8f7df/ce24eb80e515401d81e372cf7f2188fc [2023-11-21 22:05:54,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:05:54,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:05:54,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:54,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:05:54,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:05:54,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:54" (1/1) ... [2023-11-21 22:05:54,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4431f6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:54, skipping insertion in model container [2023-11-21 22:05:54,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:54" (1/1) ... [2023-11-21 22:05:54,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:05:55,141 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_0c627266-453f-4784-b6f8-0dd231c4bcd7/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2023-11-21 22:05:55,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:55,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:05:55,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-21 22:05:55,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [150] [2023-11-21 22:05:55,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [164] [2023-11-21 22:05:55,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [284] [2023-11-21 22:05:55,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [322] [2023-11-21 22:05:55,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1825] [2023-11-21 22:05:55,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1834] [2023-11-21 22:05:55,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2200] [2023-11-21 22:05:55,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2552] [2023-11-21 22:05:55,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2733] [2023-11-21 22:05:55,499 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_0c627266-453f-4784-b6f8-0dd231c4bcd7/sv-benchmarks/c/product-lines/elevator_spec2_product18.cil.c[38051,38064] [2023-11-21 22:05:55,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:55,606 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:05:55,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55 WrapperNode [2023-11-21 22:05:55,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:55,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:55,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:05:55,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:05:55,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,777 INFO L138 Inliner]: procedures = 92, calls = 338, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 816 [2023-11-21 22:05:55,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:55,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:05:55,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:05:55,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:05:55,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,796 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,823 INFO L187 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2] [2023-11-21 22:05:55,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:05:55,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:05:55,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:05:55,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:05:55,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:55,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:05:55,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c627266-453f-4784-b6f8-0dd231c4bcd7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:05:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:05:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:05:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:05:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 22:05:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 22:05:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:05:55,988 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:05:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:05:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:05:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:05:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:05:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:05:55,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:05:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:05:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:05:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 22:05:55,990 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 22:05:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:05:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:05:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:05:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:05:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:05:55,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:05:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:05:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:05:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:05:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:05:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:05:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:05:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:05:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:05:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:05:55,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:05:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:05:55,994 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:05:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:05:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:05:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:05:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:05:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:05:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:05:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:05:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:05:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:05:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:05:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2023-11-21 22:05:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2023-11-21 22:05:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:05:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:05:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:05:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:05:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:05:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:05:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:05:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:05:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:05:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:05:56,231 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:05:56,233 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:05:57,242 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:05:58,513 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:05:58,513 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:05:58,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:58 BoogieIcfgContainer [2023-11-21 22:05:58,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:05:58,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:05:58,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:05:58,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:05:58,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:05:54" (1/3) ... [2023-11-21 22:05:58,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5d79f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:58, skipping insertion in model container [2023-11-21 22:05:58,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (2/3) ... [2023-11-21 22:05:58,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5d79f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:58, skipping insertion in model container [2023-11-21 22:05:58,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:58" (3/3) ... [2023-11-21 22:05:58,528 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product18.cil.c [2023-11-21 22:05:58,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:05:58,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:05:58,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:05:58,640 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=PETRI_NET, 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;@79fa2e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:05:58,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:05:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-21 22:05:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 22:05:58,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:05:58,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:58,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:05:58,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1377136617, now seen corresponding path program 1 times [2023-11-21 22:05:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334626108] [2023-11-21 22:05:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:05:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:05:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:05:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:00,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:06:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334626108] [2023-11-21 22:06:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334626108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:00,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:00,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:06:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715765596] [2023-11-21 22:06:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:06:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:06:00,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:06:00,160 INFO L87 Difference]: Start difference. First operand has 356 states, 241 states have (on average 1.6182572614107884) internal successors, (390), 264 states have internal predecessors, (390), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 84 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 22:06:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:03,533 INFO L93 Difference]: Finished difference Result 454 states and 736 transitions. [2023-11-21 22:06:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:06:03,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-11-21 22:06:03,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:03,556 INFO L225 Difference]: With dead ends: 454 [2023-11-21 22:06:03,556 INFO L226 Difference]: Without dead ends: 432 [2023-11-21 22:06:03,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:06:03,564 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 371 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:03,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 388 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 22:06:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-21 22:06:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 352. [2023-11-21 22:06:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 239 states have (on average 1.606694560669456) internal successors, (384), 260 states have internal predecessors, (384), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-21 22:06:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 561 transitions. [2023-11-21 22:06:03,808 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 561 transitions. Word has length 39 [2023-11-21 22:06:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:03,809 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 561 transitions. [2023-11-21 22:06:03,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 22:06:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 561 transitions. [2023-11-21 22:06:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:06:03,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:03,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:03,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:06:03,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:03,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1300265286, now seen corresponding path program 1 times [2023-11-21 22:06:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861377538] [2023-11-21 22:06:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:06:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:06:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:05,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:05,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861377538] [2023-11-21 22:06:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861377538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:06:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296951488] [2023-11-21 22:06:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:05,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:06:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:06:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:06:05,125 INFO L87 Difference]: Start difference. First operand 352 states and 561 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:06:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:13,162 INFO L93 Difference]: Finished difference Result 1265 states and 2071 transitions. [2023-11-21 22:06:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:06:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2023-11-21 22:06:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:13,181 INFO L225 Difference]: With dead ends: 1265 [2023-11-21 22:06:13,182 INFO L226 Difference]: Without dead ends: 929 [2023-11-21 22:06:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:06:13,191 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2049 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:13,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 1128 Invalid, 2759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [789 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-21 22:06:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-21 22:06:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 733. [2023-11-21 22:06:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 521 states have (on average 1.6314779270633397) internal successors, (850), 551 states have internal predecessors, (850), 174 states have call successors, (174), 36 states have call predecessors, (174), 37 states have return successors, (176), 158 states have call predecessors, (176), 169 states have call successors, (176) [2023-11-21 22:06:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1200 transitions. [2023-11-21 22:06:13,618 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1200 transitions. Word has length 40 [2023-11-21 22:06:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:13,619 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1200 transitions. [2023-11-21 22:06:13,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:06:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1200 transitions. [2023-11-21 22:06:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:06:13,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:13,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:13,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:06:13,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:13,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 785604992, now seen corresponding path program 1 times [2023-11-21 22:06:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:13,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802091316] [2023-11-21 22:06:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:06:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:06:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:06:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802091316] [2023-11-21 22:06:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802091316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:15,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:06:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161970641] [2023-11-21 22:06:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:06:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:06:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:06:15,464 INFO L87 Difference]: Start difference. First operand 733 states and 1200 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:06:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:23,588 INFO L93 Difference]: Finished difference Result 1765 states and 2918 transitions. [2023-11-21 22:06:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:06:23,589 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 61 [2023-11-21 22:06:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:23,599 INFO L225 Difference]: With dead ends: 1765 [2023-11-21 22:06:23,600 INFO L226 Difference]: Without dead ends: 1049 [2023-11-21 22:06:23,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:06:23,616 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 920 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:23,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2048 Invalid, 3378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-21 22:06:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-11-21 22:06:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 916. [2023-11-21 22:06:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 652 states have (on average 1.607361963190184) internal successors, (1048), 684 states have internal predecessors, (1048), 211 states have call successors, (211), 47 states have call predecessors, (211), 52 states have return successors, (238), 195 states have call predecessors, (238), 206 states have call successors, (238) [2023-11-21 22:06:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1497 transitions. [2023-11-21 22:06:23,908 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1497 transitions. Word has length 61 [2023-11-21 22:06:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:23,909 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1497 transitions. [2023-11-21 22:06:23,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:06:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1497 transitions. [2023-11-21 22:06:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-21 22:06:23,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:23,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:23,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:06:23,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:23,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1838128728, now seen corresponding path program 1 times [2023-11-21 22:06:23,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498073976] [2023-11-21 22:06:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:06:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:06:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:06:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498073976] [2023-11-21 22:06:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498073976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:25,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:06:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547241846] [2023-11-21 22:06:25,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:25,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:06:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:06:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:25,424 INFO L87 Difference]: Start difference. First operand 916 states and 1497 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:06:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:34,782 INFO L93 Difference]: Finished difference Result 2558 states and 4217 transitions. [2023-11-21 22:06:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 22:06:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2023-11-21 22:06:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:34,802 INFO L225 Difference]: With dead ends: 2558 [2023-11-21 22:06:34,802 INFO L226 Difference]: Without dead ends: 1660 [2023-11-21 22:06:34,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:06:34,816 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1786 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:34,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1820 Valid, 1346 Invalid, 3017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [923 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-21 22:06:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-21 22:06:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1542. [2023-11-21 22:06:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1093 states have (on average 1.5827996340347668) internal successors, (1730), 1152 states have internal predecessors, (1730), 361 states have call successors, (361), 80 states have call predecessors, (361), 87 states have return successors, (412), 331 states have call predecessors, (412), 356 states have call successors, (412) [2023-11-21 22:06:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2503 transitions. [2023-11-21 22:06:35,348 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2503 transitions. Word has length 65 [2023-11-21 22:06:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 2503 transitions. [2023-11-21 22:06:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:06:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2503 transitions. [2023-11-21 22:06:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 22:06:35,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:35,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:35,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:06:35,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:35,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -602937848, now seen corresponding path program 1 times [2023-11-21 22:06:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:35,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767196533] [2023-11-21 22:06:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:06:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:06:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 22:06:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:06:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:06:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767196533] [2023-11-21 22:06:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767196533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:06:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67359945] [2023-11-21 22:06:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:06:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:06:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:06:37,021 INFO L87 Difference]: Start difference. First operand 1542 states and 2503 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)