./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu --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 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:05,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:05,781 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:05,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:05,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:05,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:05,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:05,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:05,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:05,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:05,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:05,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:05,815 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:05,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:05,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:05,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:05,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:05,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:05,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:05,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:05,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:05,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:05,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:05,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:05,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:05,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:05,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:05,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:05,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:05,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:05,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:05,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:05,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:05,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:05,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:05,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:05,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:05,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:05,838 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:05,838 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_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2023-11-19 07:38:06,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:06,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:06,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:06,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:06,176 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:06,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2023-11-19 07:38:09,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:09,883 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:09,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2023-11-19 07:38:09,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/data/105493faa/6088068989d24f8ba013e5ac6ec90c92/FLAGe7985842b [2023-11-19 07:38:09,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/data/105493faa/6088068989d24f8ba013e5ac6ec90c92 [2023-11-19 07:38:09,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:09,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:09,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:09,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:09,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:09,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:09" (1/1) ... [2023-11-19 07:38:09,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc0b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:09, skipping insertion in model container [2023-11-19 07:38:09,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:09" (1/1) ... [2023-11-19 07:38:10,017 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:10,321 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_58c28946-e403-4861-85ec-9e58a761f11a/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2023-11-19 07:38:10,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:10,831 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:10,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-19 07:38:10,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [150] [2023-11-19 07:38:10,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2023-11-19 07:38:10,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [525] [2023-11-19 07:38:10,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [563] [2023-11-19 07:38:10,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [752] [2023-11-19 07:38:10,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1102] [2023-11-19 07:38:10,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1769] [2023-11-19 07:38:10,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1784] [2023-11-19 07:38:10,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1904] [2023-11-19 07:38:10,871 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_58c28946-e403-4861-85ec-9e58a761f11a/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2023-11-19 07:38:11,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:11,110 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:11,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11 WrapperNode [2023-11-19 07:38:11,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:11,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:11,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:11,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:11,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,242 INFO L138 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 904 [2023-11-19 07:38:11,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:11,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:11,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:11,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:11,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:11,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:11,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:11,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:11,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (1/1) ... [2023-11-19 07:38:11,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:11,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:11,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58c28946-e403-4861-85ec-9e58a761f11a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-19 07:38:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-19 07:38:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-19 07:38:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-19 07:38:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 07:38:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 07:38:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 07:38:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 07:38:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-19 07:38:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-19 07:38:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 07:38:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 07:38:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 07:38:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 07:38:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 07:38:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 07:38:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 07:38:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 07:38:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 07:38:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 07:38:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 07:38:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 07:38:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 07:38:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 07:38:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-19 07:38:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-19 07:38:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-19 07:38:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-19 07:38:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 07:38:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 07:38:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-19 07:38:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-19 07:38:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 07:38:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 07:38:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 07:38:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 07:38:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 07:38:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 07:38:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 07:38:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 07:38:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-19 07:38:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-19 07:38:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 07:38:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 07:38:11,504 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 07:38:11,504 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 07:38:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 07:38:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 07:38:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-19 07:38:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-19 07:38:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-19 07:38:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-19 07:38:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 07:38:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 07:38:11,658 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:11,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:12,967 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:12,982 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:12,983 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:12,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:12 BoogieIcfgContainer [2023-11-19 07:38:12,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:12,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:12,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:12,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:12,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:09" (1/3) ... [2023-11-19 07:38:13,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a592af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:12, skipping insertion in model container [2023-11-19 07:38:13,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:11" (2/3) ... [2023-11-19 07:38:13,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a592af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:13, skipping insertion in model container [2023-11-19 07:38:13,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:12" (3/3) ... [2023-11-19 07:38:13,002 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2023-11-19 07:38:13,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:13,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:13,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:13,093 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;@d632142, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:13,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-19 07:38:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:38:13,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:13,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:13,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:13,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1321862527, now seen corresponding path program 1 times [2023-11-19 07:38:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957754523] [2023-11-19 07:38:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:38:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:38:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:38:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:38:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:38:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:14,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957754523] [2023-11-19 07:38:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957754523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:14,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:14,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:38:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878997645] [2023-11-19 07:38:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:15,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:15,058 INFO L87 Difference]: Start difference. First operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:25,045 INFO L93 Difference]: Finished difference Result 1464 states and 2513 transitions. [2023-11-19 07:38:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:38:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2023-11-19 07:38:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:25,085 INFO L225 Difference]: With dead ends: 1464 [2023-11-19 07:38:25,085 INFO L226 Difference]: Without dead ends: 872 [2023-11-19 07:38:25,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:38:25,103 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1563 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 4935 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 5356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 4935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:25,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 2371 Invalid, 5356 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [421 Valid, 4935 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-19 07:38:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-19 07:38:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 599. [2023-11-19 07:38:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 482 states have internal predecessors, (769), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2023-11-19 07:38:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2023-11-19 07:38:25,473 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 67 [2023-11-19 07:38:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:25,474 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2023-11-19 07:38:25,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2023-11-19 07:38:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:38:25,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:25,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:25,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:25,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:25,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1068252313, now seen corresponding path program 1 times [2023-11-19 07:38:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518210872] [2023-11-19 07:38:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:25,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:38:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:38:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:38:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:38:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:38:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:26,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518210872] [2023-11-19 07:38:26,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518210872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:38:26,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256111169] [2023-11-19 07:38:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:26,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:26,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:26,488 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:36,245 INFO L93 Difference]: Finished difference Result 1456 states and 2475 transitions. [2023-11-19 07:38:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:38:36,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2023-11-19 07:38:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:36,256 INFO L225 Difference]: With dead ends: 1456 [2023-11-19 07:38:36,256 INFO L226 Difference]: Without dead ends: 873 [2023-11-19 07:38:36,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:38:36,269 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 891 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 5155 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:36,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 2276 Invalid, 5362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 5155 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-19 07:38:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-11-19 07:38:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 599. [2023-11-19 07:38:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6623376623376624) internal successors, (768), 482 states have internal predecessors, (768), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2023-11-19 07:38:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 985 transitions. [2023-11-19 07:38:36,491 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 985 transitions. Word has length 68 [2023-11-19 07:38:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:36,492 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 985 transitions. [2023-11-19 07:38:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 985 transitions. [2023-11-19 07:38:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:38:36,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:36,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:36,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:36,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:36,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:36,497 INFO L85 PathProgramCache]: Analyzing trace with hash -550225129, now seen corresponding path program 1 times [2023-11-19 07:38:36,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:36,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662677675] [2023-11-19 07:38:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:36,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:38:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:38:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:38:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:38:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:38:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:38:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662677675] [2023-11-19 07:38:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662677675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:37,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:37,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456327229] [2023-11-19 07:38:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:37,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:37,224 INFO L87 Difference]: Start difference. First operand 599 states and 985 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:38:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:44,144 INFO L93 Difference]: Finished difference Result 1449 states and 2457 transitions. [2023-11-19 07:38:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-11-19 07:38:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:44,156 INFO L225 Difference]: With dead ends: 1449 [2023-11-19 07:38:44,156 INFO L226 Difference]: Without dead ends: 835 [2023-11-19 07:38:44,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:44,162 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1455 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:44,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1258 Invalid, 3013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [428 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-19 07:38:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-19 07:38:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 575. [2023-11-19 07:38:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 441 states have (on average 1.653061224489796) internal successors, (729), 459 states have internal predecessors, (729), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:38:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 942 transitions. [2023-11-19 07:38:44,387 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 942 transitions. Word has length 68 [2023-11-19 07:38:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:44,389 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 942 transitions. [2023-11-19 07:38:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:38:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 942 transitions. [2023-11-19 07:38:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:38:44,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:44,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:44,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:44,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:44,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1908921867, now seen corresponding path program 1 times [2023-11-19 07:38:44,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740351487] [2023-11-19 07:38:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:38:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:38:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:38:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-19 07:38:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:38:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:38:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740351487] [2023-11-19 07:38:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740351487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:45,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:45,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:38:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752709258] [2023-11-19 07:38:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:45,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:45,323 INFO L87 Difference]: Start difference. First operand 575 states and 942 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:55,083 INFO L93 Difference]: Finished difference Result 1412 states and 2388 transitions. [2023-11-19 07:38:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:38:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2023-11-19 07:38:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:55,095 INFO L225 Difference]: With dead ends: 1412 [2023-11-19 07:38:55,095 INFO L226 Difference]: Without dead ends: 829 [2023-11-19 07:38:55,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:38:55,102 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 886 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 5133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:55,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2325 Invalid, 5133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [200 Valid, 4933 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-19 07:38:55,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-19 07:38:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2023-11-19 07:38:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.645977011494253) internal successors, (716), 453 states have internal predecessors, (716), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:38:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 929 transitions. [2023-11-19 07:38:55,271 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 929 transitions. Word has length 69 [2023-11-19 07:38:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:55,272 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 929 transitions. [2023-11-19 07:38:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:38:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 929 transitions. [2023-11-19 07:38:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 07:38:55,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:55,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:55,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:55,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1120655615, now seen corresponding path program 1 times [2023-11-19 07:38:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865014465] [2023-11-19 07:38:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat