./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.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_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/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_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/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_324114d7-273f-495e-af63-6027c6b19d18/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 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:40,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:41,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:41,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:41,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:41,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:41,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:41,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:41,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:41,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:41,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:41,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:41,096 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:41,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:41,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:41,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:41,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:41,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:41,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:41,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:41,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:41,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:41,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:41,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:41,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:41,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:41,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:41,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:41,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:41,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:41,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:41,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:41,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:41,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:41,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:41,108 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:41,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:41,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:41,109 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:41,109 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_324114d7-273f-495e-af63-6027c6b19d18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 [2023-11-19 08:02:41,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:41,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:41,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:41,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:41,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:41,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2023-11-19 08:02:44,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:45,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:45,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2023-11-19 08:02:45,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/data/8648b13d5/984809b4069940c7ac9169bca76d618b/FLAG065446121 [2023-11-19 08:02:45,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/data/8648b13d5/984809b4069940c7ac9169bca76d618b [2023-11-19 08:02:45,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:45,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:45,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:45,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:45,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:45,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:45,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb18467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45, skipping insertion in model container [2023-11-19 08:02:45,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:45,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:45,731 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_324114d7-273f-495e-af63-6027c6b19d18/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2023-11-19 08:02:45,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:45,772 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:45,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-19 08:02:45,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [64] [2023-11-19 08:02:45,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1592] [2023-11-19 08:02:45,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1958] [2023-11-19 08:02:45,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1996] [2023-11-19 08:02:45,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2090] [2023-11-19 08:02:45,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2208] [2023-11-19 08:02:45,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2390] [2023-11-19 08:02:45,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2740] [2023-11-19 08:02:45,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2749] [2023-11-19 08:02:45,922 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_324114d7-273f-495e-af63-6027c6b19d18/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2023-11-19 08:02:45,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:45,994 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:45,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45 WrapperNode [2023-11-19 08:02:45,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:45,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:45,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:45,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:46,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,095 INFO L138 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 849 [2023-11-19 08:02:46,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:46,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:46,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:46,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:46,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:46,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:46,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:46,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:46,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (1/1) ... [2023-11-19 08:02:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:46,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:46,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-19 08:02:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-19 08:02:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-19 08:02:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-19 08:02:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-19 08:02:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-19 08:02:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-19 08:02:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-19 08:02:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-19 08:02:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-19 08:02:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-19 08:02:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-19 08:02:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 08:02:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 08:02:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 08:02:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 08:02:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-19 08:02:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-19 08:02:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 08:02:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 08:02:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-19 08:02:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-19 08:02:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-19 08:02:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-19 08:02:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-19 08:02:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-19 08:02:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-19 08:02:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-19 08:02:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-19 08:02:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-19 08:02:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2023-11-19 08:02:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2023-11-19 08:02:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-19 08:02:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-19 08:02:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-19 08:02:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-19 08:02:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-19 08:02:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-19 08:02:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-19 08:02:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-19 08:02:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-19 08:02:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-19 08:02:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-19 08:02:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-19 08:02:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-19 08:02:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-19 08:02:46,464 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:46,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:47,797 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:47,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:47,820 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:02:47,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:47 BoogieIcfgContainer [2023-11-19 08:02:47,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:47,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:47,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:47,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:47,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:45" (1/3) ... [2023-11-19 08:02:47,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c223e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:47, skipping insertion in model container [2023-11-19 08:02:47,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:45" (2/3) ... [2023-11-19 08:02:47,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c223e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:47, skipping insertion in model container [2023-11-19 08:02:47,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:47" (3/3) ... [2023-11-19 08:02:47,839 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2023-11-19 08:02:47,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:47,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:47,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:47,945 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;@722fea3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:47,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-19 08:02:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 08:02:47,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:47,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:47,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:47,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -452819156, now seen corresponding path program 1 times [2023-11-19 08:02:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812109975] [2023-11-19 08:02:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:02:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:02:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:02:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:02:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812109975] [2023-11-19 08:02:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812109975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664578464] [2023-11-19 08:02:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:49,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:49,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:49,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:49,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:50,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:02:50,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 08:02:50,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664578464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:50,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-11-19 08:02:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652799313] [2023-11-19 08:02:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:02:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:02:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:50,277 INFO L87 Difference]: Start difference. First operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 08:02:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:50,365 INFO L93 Difference]: Finished difference Result 578 states and 964 transitions. [2023-11-19 08:02:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:02:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-11-19 08:02:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:50,394 INFO L225 Difference]: With dead ends: 578 [2023-11-19 08:02:50,394 INFO L226 Difference]: Without dead ends: 549 [2023-11-19 08:02:50,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:50,408 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:50,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-19 08:02:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2023-11-19 08:02:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.7013888888888888) internal successors, (735), 453 states have internal predecessors, (735), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 918 transitions. [2023-11-19 08:02:50,534 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 918 transitions. Word has length 79 [2023-11-19 08:02:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:50,536 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 918 transitions. [2023-11-19 08:02:50,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 08:02:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 918 transitions. [2023-11-19 08:02:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 08:02:50,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:50,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:50,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:50,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:02:50,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:50,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1489058496, now seen corresponding path program 1 times [2023-11-19 08:02:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:50,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850699118] [2023-11-19 08:02:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:50,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:02:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:02:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:02:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-19 08:02:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:51,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:51,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850699118] [2023-11-19 08:02:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850699118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839097257] [2023-11-19 08:02:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:51,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:51,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:51,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:51,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:52,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:52,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:52,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839097257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:02:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128162983] [2023-11-19 08:02:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:52,276 INFO L87 Difference]: Start difference. First operand 549 states and 918 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:52,431 INFO L93 Difference]: Finished difference Result 1089 states and 1828 transitions. [2023-11-19 08:02:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:52,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-11-19 08:02:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:52,444 INFO L225 Difference]: With dead ends: 1089 [2023-11-19 08:02:52,444 INFO L226 Difference]: Without dead ends: 549 [2023-11-19 08:02:52,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:52,455 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 14 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:52,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2705 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-19 08:02:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2023-11-19 08:02:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6990740740740742) internal successors, (734), 453 states have internal predecessors, (734), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 917 transitions. [2023-11-19 08:02:52,526 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 917 transitions. Word has length 81 [2023-11-19 08:02:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:52,527 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 917 transitions. [2023-11-19 08:02:52,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 917 transitions. [2023-11-19 08:02:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 08:02:52,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:52,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:52,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:52,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:52,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1789740480, now seen corresponding path program 1 times [2023-11-19 08:02:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456361130] [2023-11-19 08:02:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:02:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 08:02:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:53,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:53,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456361130] [2023-11-19 08:02:53,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456361130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:53,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132967657] [2023-11-19 08:02:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:53,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:53,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:53,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:54,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:54,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132967657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:54,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:02:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587429455] [2023-11-19 08:02:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:54,078 INFO L87 Difference]: Start difference. First operand 549 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:54,159 INFO L93 Difference]: Finished difference Result 1089 states and 1826 transitions. [2023-11-19 08:02:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2023-11-19 08:02:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:54,166 INFO L225 Difference]: With dead ends: 1089 [2023-11-19 08:02:54,166 INFO L226 Difference]: Without dead ends: 549 [2023-11-19 08:02:54,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:54,171 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 12 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:54,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2705 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-19 08:02:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2023-11-19 08:02:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6967592592592593) internal successors, (733), 453 states have internal predecessors, (733), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 916 transitions. [2023-11-19 08:02:54,206 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 916 transitions. Word has length 83 [2023-11-19 08:02:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:54,207 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 916 transitions. [2023-11-19 08:02:54,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:54,207 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 916 transitions. [2023-11-19 08:02:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:02:54,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:54,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:54,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 08:02:54,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:54,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:54,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:54,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2051322496, now seen corresponding path program 1 times [2023-11-19 08:02:54,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:54,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454879028] [2023-11-19 08:02:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:54,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-19 08:02:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-19 08:02:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454879028] [2023-11-19 08:02:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454879028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522772352] [2023-11-19 08:02:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:55,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:55,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:55,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:55,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:55,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522772352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:55,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:55,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:02:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971507343] [2023-11-19 08:02:55,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:55,790 INFO L87 Difference]: Start difference. First operand 549 states and 916 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:55,891 INFO L93 Difference]: Finished difference Result 1096 states and 1833 transitions. [2023-11-19 08:02:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2023-11-19 08:02:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:55,898 INFO L225 Difference]: With dead ends: 1096 [2023-11-19 08:02:55,898 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 08:02:55,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:55,902 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 20 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:55,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 08:02:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2023-11-19 08:02:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6931818181818181) internal successors, (745), 461 states have internal predecessors, (745), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 928 transitions. [2023-11-19 08:02:55,934 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 928 transitions. Word has length 85 [2023-11-19 08:02:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:55,934 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 928 transitions. [2023-11-19 08:02:55,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 928 transitions. [2023-11-19 08:02:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 08:02:55,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:55,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:55,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:56,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:56,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -45070625, now seen corresponding path program 1 times [2023-11-19 08:02:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406743166] [2023-11-19 08:02:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 08:02:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:02:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 08:02:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406743166] [2023-11-19 08:02:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406743166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343310485] [2023-11-19 08:02:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:57,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:57,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:57,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:02:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:57,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:57,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:57,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343310485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:57,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:57,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:02:57,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729470897] [2023-11-19 08:02:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:57,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:57,522 INFO L87 Difference]: Start difference. First operand 558 states and 928 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:57,612 INFO L93 Difference]: Finished difference Result 1098 states and 1834 transitions. [2023-11-19 08:02:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2023-11-19 08:02:57,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:57,619 INFO L225 Difference]: With dead ends: 1098 [2023-11-19 08:02:57,619 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 08:02:57,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:57,626 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 18 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:57,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 08:02:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2023-11-19 08:02:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.690909090909091) internal successors, (744), 461 states have internal predecessors, (744), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 927 transitions. [2023-11-19 08:02:57,666 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 927 transitions. Word has length 86 [2023-11-19 08:02:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:57,667 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 927 transitions. [2023-11-19 08:02:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 927 transitions. [2023-11-19 08:02:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 08:02:57,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:57,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:57,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:57,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:57,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:57,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash 84493924, now seen corresponding path program 1 times [2023-11-19 08:02:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:57,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966099056] [2023-11-19 08:02:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:02:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:02:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:02:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:02:58,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:58,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966099056] [2023-11-19 08:02:58,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966099056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:58,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625713847] [2023-11-19 08:02:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:58,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:58,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:58,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:58,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:02:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:59,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:02:59,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625713847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:59,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:59,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:02:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675549417] [2023-11-19 08:02:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:59,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:59,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:59,154 INFO L87 Difference]: Start difference. First operand 558 states and 927 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:59,235 INFO L93 Difference]: Finished difference Result 1098 states and 1833 transitions. [2023-11-19 08:02:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-11-19 08:02:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:59,241 INFO L225 Difference]: With dead ends: 1098 [2023-11-19 08:02:59,242 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 08:02:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:02:59,246 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 17 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2705 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 08:02:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2023-11-19 08:02:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6886363636363637) internal successors, (743), 461 states have internal predecessors, (743), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-19 08:02:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 926 transitions. [2023-11-19 08:02:59,274 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 926 transitions. Word has length 87 [2023-11-19 08:02:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:59,274 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 926 transitions. [2023-11-19 08:02:59,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:02:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 926 transitions. [2023-11-19 08:02:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 08:02:59,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:59,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:59,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:59,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:59,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:59,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2128673661, now seen corresponding path program 1 times [2023-11-19 08:02:59,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:59,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813127023] [2023-11-19 08:02:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:02:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:02:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 08:03:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 08:03:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813127023] [2023-11-19 08:03:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813127023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42372900] [2023-11-19 08:03:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:00,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:00,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:00,516 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:00,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:03:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:03:00,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:00,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42372900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:00,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:00,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-19 08:03:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255547720] [2023-11-19 08:03:00,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:00,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:00,982 INFO L87 Difference]: Start difference. First operand 558 states and 926 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:01,125 INFO L93 Difference]: Finished difference Result 1117 states and 1863 transitions. [2023-11-19 08:03:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2023-11-19 08:03:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:01,135 INFO L225 Difference]: With dead ends: 1117 [2023-11-19 08:03:01,136 INFO L226 Difference]: Without dead ends: 581 [2023-11-19 08:03:01,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:01,140 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 148 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5322 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:01,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5322 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-11-19 08:03:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 577. [2023-11-19 08:03:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6864035087719298) internal successors, (769), 479 states have internal predecessors, (769), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2023-11-19 08:03:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 957 transitions. [2023-11-19 08:03:01,174 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 957 transitions. Word has length 88 [2023-11-19 08:03:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:01,175 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 957 transitions. [2023-11-19 08:03:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 957 transitions. [2023-11-19 08:03:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 08:03:01,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:01,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:01,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 08:03:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:03:01,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:01,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1682618308, now seen corresponding path program 1 times [2023-11-19 08:03:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112106073] [2023-11-19 08:03:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:01,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 08:03:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 08:03:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:02,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112106073] [2023-11-19 08:03:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112106073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868683614] [2023-11-19 08:03:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:02,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:02,246 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:02,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:03:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:02,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:02,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868683614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:02,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368903083] [2023-11-19 08:03:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:02,640 INFO L87 Difference]: Start difference. First operand 577 states and 957 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:02,826 INFO L93 Difference]: Finished difference Result 1158 states and 1937 transitions. [2023-11-19 08:03:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:02,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2023-11-19 08:03:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:02,833 INFO L225 Difference]: With dead ends: 1158 [2023-11-19 08:03:02,833 INFO L226 Difference]: Without dead ends: 577 [2023-11-19 08:03:02,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:02,837 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 135 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:02,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2522 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-19 08:03:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2023-11-19 08:03:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 479 states have internal predecessors, (764), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2023-11-19 08:03:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 952 transitions. [2023-11-19 08:03:02,864 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 952 transitions. Word has length 88 [2023-11-19 08:03:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:02,864 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 952 transitions. [2023-11-19 08:03:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 952 transitions. [2023-11-19 08:03:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 08:03:02,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:02,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:02,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:03,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:03,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:03,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1307445388, now seen corresponding path program 1 times [2023-11-19 08:03:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:03,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300023525] [2023-11-19 08:03:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:03,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-19 08:03:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 08:03:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:03,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300023525] [2023-11-19 08:03:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300023525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725023973] [2023-11-19 08:03:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:03,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:03,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:03:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:04,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:04,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:04,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:04,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725023973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:04,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704002808] [2023-11-19 08:03:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:04,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:04,230 INFO L87 Difference]: Start difference. First operand 577 states and 952 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:04,383 INFO L93 Difference]: Finished difference Result 1158 states and 1927 transitions. [2023-11-19 08:03:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-11-19 08:03:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:04,390 INFO L225 Difference]: With dead ends: 1158 [2023-11-19 08:03:04,391 INFO L226 Difference]: Without dead ends: 577 [2023-11-19 08:03:04,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:04,396 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 129 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:04,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2522 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-19 08:03:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2023-11-19 08:03:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 479 states have internal predecessors, (759), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2023-11-19 08:03:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 947 transitions. [2023-11-19 08:03:04,424 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 947 transitions. Word has length 90 [2023-11-19 08:03:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:04,424 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 947 transitions. [2023-11-19 08:03:04,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 947 transitions. [2023-11-19 08:03:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 08:03:04,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:04,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:04,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 08:03:04,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:04,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1155388188, now seen corresponding path program 1 times [2023-11-19 08:03:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038709899] [2023-11-19 08:03:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:04,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 08:03:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 08:03:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038709899] [2023-11-19 08:03:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038709899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:05,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344699864] [2023-11-19 08:03:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:05,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:05,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:05,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:03:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:05,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:05,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:05,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:05,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344699864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:05,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505382846] [2023-11-19 08:03:05,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:05,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:05,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:05,905 INFO L87 Difference]: Start difference. First operand 577 states and 947 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:06,102 INFO L93 Difference]: Finished difference Result 1194 states and 1975 transitions. [2023-11-19 08:03:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2023-11-19 08:03:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:06,109 INFO L225 Difference]: With dead ends: 1194 [2023-11-19 08:03:06,109 INFO L226 Difference]: Without dead ends: 643 [2023-11-19 08:03:06,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:06,114 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 179 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:06,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-19 08:03:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 628. [2023-11-19 08:03:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2023-11-19 08:03:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2023-11-19 08:03:06,144 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 92 [2023-11-19 08:03:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:06,145 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2023-11-19 08:03:06,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2023-11-19 08:03:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 08:03:06,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:06,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:06,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:06,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:06,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2004653834, now seen corresponding path program 1 times [2023-11-19 08:03:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996710306] [2023-11-19 08:03:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:03:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996710306] [2023-11-19 08:03:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996710306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718405253] [2023-11-19 08:03:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:07,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:07,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:07,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:07,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:03:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:07,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:03:07,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:07,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718405253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-19 08:03:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638587782] [2023-11-19 08:03:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:07,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:07,754 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:08,040 INFO L93 Difference]: Finished difference Result 1186 states and 1955 transitions. [2023-11-19 08:03:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2023-11-19 08:03:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:08,048 INFO L225 Difference]: With dead ends: 1186 [2023-11-19 08:03:08,048 INFO L226 Difference]: Without dead ends: 650 [2023-11-19 08:03:08,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:03:08,054 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 173 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:08,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 6094 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:03:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-19 08:03:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 628. [2023-11-19 08:03:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2023-11-19 08:03:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2023-11-19 08:03:08,087 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 93 [2023-11-19 08:03:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:08,087 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2023-11-19 08:03:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2023-11-19 08:03:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 08:03:08,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:08,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:08,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:08,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash -138861034, now seen corresponding path program 1 times [2023-11-19 08:03:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:08,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738324478] [2023-11-19 08:03:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:03:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738324478] [2023-11-19 08:03:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738324478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578713391] [2023-11-19 08:03:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:09,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:09,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:03:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:09,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:09,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:09,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:09,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578713391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:09,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:09,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097375014] [2023-11-19 08:03:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:09,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:09,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:09,491 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:09,666 INFO L93 Difference]: Finished difference Result 1194 states and 1973 transitions. [2023-11-19 08:03:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2023-11-19 08:03:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:09,673 INFO L225 Difference]: With dead ends: 1194 [2023-11-19 08:03:09,673 INFO L226 Difference]: Without dead ends: 628 [2023-11-19 08:03:09,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:09,677 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 173 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:09,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-19 08:03:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2023-11-19 08:03:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.658102766798419) internal successors, (839), 529 states have internal predecessors, (839), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2023-11-19 08:03:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1026 transitions. [2023-11-19 08:03:09,707 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1026 transitions. Word has length 93 [2023-11-19 08:03:09,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:09,708 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1026 transitions. [2023-11-19 08:03:09,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1026 transitions. [2023-11-19 08:03:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 08:03:09,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:09,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:09,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:09,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:09,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:09,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -895838635, now seen corresponding path program 1 times [2023-11-19 08:03:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:09,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662551659] [2023-11-19 08:03:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 08:03:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662551659] [2023-11-19 08:03:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662551659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368220271] [2023-11-19 08:03:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:10,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:10,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:10,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:10,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:03:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:03:11,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:03:11,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368220271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:11,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-19 08:03:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712896403] [2023-11-19 08:03:11,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:11,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:11,187 INFO L87 Difference]: Start difference. First operand 628 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:11,317 INFO L93 Difference]: Finished difference Result 1121 states and 1847 transitions. [2023-11-19 08:03:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:11,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2023-11-19 08:03:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:11,324 INFO L225 Difference]: With dead ends: 1121 [2023-11-19 08:03:11,324 INFO L226 Difference]: Without dead ends: 652 [2023-11-19 08:03:11,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:11,328 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 134 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5281 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:11,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5281 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-19 08:03:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 647. [2023-11-19 08:03:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2023-11-19 08:03:11,358 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 93 [2023-11-19 08:03:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2023-11-19 08:03:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2023-11-19 08:03:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:03:11,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:11,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:11,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:11,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:03:11,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1877365016, now seen corresponding path program 1 times [2023-11-19 08:03:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:11,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592009757] [2023-11-19 08:03:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:03:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:12,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592009757] [2023-11-19 08:03:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592009757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:12,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756192787] [2023-11-19 08:03:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:12,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:12,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:12,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:03:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:03:12,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:03:12,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756192787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-19 08:03:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013924933] [2023-11-19 08:03:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:12,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:12,838 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:12,976 INFO L93 Difference]: Finished difference Result 1151 states and 1898 transitions. [2023-11-19 08:03:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2023-11-19 08:03:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:12,983 INFO L225 Difference]: With dead ends: 1151 [2023-11-19 08:03:12,983 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 08:03:12,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:12,988 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 143 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5271 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:12,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5271 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 08:03:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 647. [2023-11-19 08:03:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2023-11-19 08:03:13,017 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2023-11-19 08:03:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2023-11-19 08:03:13,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2023-11-19 08:03:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:03:13,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:13,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:13,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:13,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:03:13,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:13,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -278934120, now seen corresponding path program 1 times [2023-11-19 08:03:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326314018] [2023-11-19 08:03:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:03:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:13,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326314018] [2023-11-19 08:03:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326314018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328381757] [2023-11-19 08:03:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:13,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:13,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:13,993 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:13,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:03:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:03:14,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:03:14,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328381757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:14,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:14,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-19 08:03:14,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864990941] [2023-11-19 08:03:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:14,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:14,410 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:14,614 INFO L93 Difference]: Finished difference Result 1136 states and 1872 transitions. [2023-11-19 08:03:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2023-11-19 08:03:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:14,621 INFO L225 Difference]: With dead ends: 1136 [2023-11-19 08:03:14,621 INFO L226 Difference]: Without dead ends: 667 [2023-11-19 08:03:14,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:03:14,627 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 173 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 6102 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:14,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 6102 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-19 08:03:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2023-11-19 08:03:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2023-11-19 08:03:14,657 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2023-11-19 08:03:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:14,657 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2023-11-19 08:03:14,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2023-11-19 08:03:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 08:03:14,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:14,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:14,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:14,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:03:14,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:14,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1670239980, now seen corresponding path program 1 times [2023-11-19 08:03:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742441949] [2023-11-19 08:03:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 08:03:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 08:03:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:03:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742441949] [2023-11-19 08:03:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742441949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400601995] [2023-11-19 08:03:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:15,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:15,652 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 08:03:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:16,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:03:16,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400601995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215243846] [2023-11-19 08:03:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:16,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:16,050 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:16,124 INFO L93 Difference]: Finished difference Result 1188 states and 1957 transitions. [2023-11-19 08:03:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2023-11-19 08:03:16,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:16,132 INFO L225 Difference]: With dead ends: 1188 [2023-11-19 08:03:16,132 INFO L226 Difference]: Without dead ends: 647 [2023-11-19 08:03:16,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:16,136 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 23 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:16,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2674 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-19 08:03:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2023-11-19 08:03:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2023-11-19 08:03:16,167 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 94 [2023-11-19 08:03:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:16,167 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2023-11-19 08:03:16,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2023-11-19 08:03:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-19 08:03:16,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:16,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:16,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:16,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:03:16,389 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:16,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash -64886323, now seen corresponding path program 1 times [2023-11-19 08:03:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:16,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111645736] [2023-11-19 08:03:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:16,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:03:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:17,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:17,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111645736] [2023-11-19 08:03:17,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111645736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:17,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924655584] [2023-11-19 08:03:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:17,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:17,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:17,200 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:17,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 08:03:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:03:17,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:03:17,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924655584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:17,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:17,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-19 08:03:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959673379] [2023-11-19 08:03:17,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:17,646 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:17,836 INFO L93 Difference]: Finished difference Result 1136 states and 1869 transitions. [2023-11-19 08:03:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2023-11-19 08:03:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:17,843 INFO L225 Difference]: With dead ends: 1136 [2023-11-19 08:03:17,843 INFO L226 Difference]: Without dead ends: 667 [2023-11-19 08:03:17,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:03:17,847 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 181 mSDsluCounter, 5177 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:17,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 6058 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-19 08:03:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2023-11-19 08:03:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2023-11-19 08:03:17,874 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 95 [2023-11-19 08:03:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:17,874 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2023-11-19 08:03:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2023-11-19 08:03:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 08:03:17,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:17,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:17,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:03:18,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:18,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash -370510403, now seen corresponding path program 1 times [2023-11-19 08:03:18,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:18,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879927565] [2023-11-19 08:03:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:03:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:03:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:03:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879927565] [2023-11-19 08:03:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879927565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011082316] [2023-11-19 08:03:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:18,828 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:18,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 08:03:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:03:19,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:03:19,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011082316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:19,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-19 08:03:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369511009] [2023-11-19 08:03:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:19,230 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:19,296 INFO L93 Difference]: Finished difference Result 1236 states and 2029 transitions. [2023-11-19 08:03:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2023-11-19 08:03:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:19,302 INFO L225 Difference]: With dead ends: 1236 [2023-11-19 08:03:19,303 INFO L226 Difference]: Without dead ends: 675 [2023-11-19 08:03:19,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:19,307 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 14 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:19,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2651 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-19 08:03:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 671. [2023-11-19 08:03:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 571 states have internal predecessors, (889), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2023-11-19 08:03:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1080 transitions. [2023-11-19 08:03:19,359 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1080 transitions. Word has length 96 [2023-11-19 08:03:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:19,360 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1080 transitions. [2023-11-19 08:03:19,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1080 transitions. [2023-11-19 08:03:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 08:03:19,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:19,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:19,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:19,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:03:19,580 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:19,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1622446553, now seen corresponding path program 1 times [2023-11-19 08:03:19,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:19,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030043695] [2023-11-19 08:03:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:19,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:03:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:03:20,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030043695] [2023-11-19 08:03:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030043695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202788969] [2023-11-19 08:03:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:20,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:20,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:20,345 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:20,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 08:03:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:03:20,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 08:03:21,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202788969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-19 08:03:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618360336] [2023-11-19 08:03:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:03:21,040 INFO L87 Difference]: Start difference. First operand 671 states and 1080 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:23,592 INFO L93 Difference]: Finished difference Result 1733 states and 2875 transitions. [2023-11-19 08:03:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2023-11-19 08:03:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:23,603 INFO L225 Difference]: With dead ends: 1733 [2023-11-19 08:03:23,603 INFO L226 Difference]: Without dead ends: 1269 [2023-11-19 08:03:23,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:23,608 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 3268 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:23,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3375 Valid, 1152 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 08:03:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-11-19 08:03:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1153. [2023-11-19 08:03:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 929 states have (on average 1.6566200215285254) internal successors, (1539), 963 states have internal predecessors, (1539), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2023-11-19 08:03:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1903 transitions. [2023-11-19 08:03:23,679 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1903 transitions. Word has length 96 [2023-11-19 08:03:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:23,680 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1903 transitions. [2023-11-19 08:03:23,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1903 transitions. [2023-11-19 08:03:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 08:03:23,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:23,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:23,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:23,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:23,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:23,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1108611874, now seen corresponding path program 1 times [2023-11-19 08:03:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291784475] [2023-11-19 08:03:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:03:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:03:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291784475] [2023-11-19 08:03:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291784475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413680485] [2023-11-19 08:03:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:24,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:24,947 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:24,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 08:03:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:25,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 08:03:25,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:25,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413680485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:25,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:25,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-19 08:03:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647702871] [2023-11-19 08:03:25,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:25,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:03:25,368 INFO L87 Difference]: Start difference. First operand 1153 states and 1903 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 08:03:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:25,578 INFO L93 Difference]: Finished difference Result 2305 states and 3871 transitions. [2023-11-19 08:03:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:25,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-11-19 08:03:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:25,590 INFO L225 Difference]: With dead ends: 2305 [2023-11-19 08:03:25,590 INFO L226 Difference]: Without dead ends: 1360 [2023-11-19 08:03:25,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:25,597 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 139 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:25,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2723 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-11-19 08:03:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1157. [2023-11-19 08:03:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 933 states have (on average 1.6538049303322615) internal successors, (1543), 967 states have internal predecessors, (1543), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2023-11-19 08:03:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2023-11-19 08:03:25,674 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 125 [2023-11-19 08:03:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:25,674 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2023-11-19 08:03:25,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 08:03:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2023-11-19 08:03:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 08:03:25,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:25,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:25,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:25,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:25,908 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:25,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -393750228, now seen corresponding path program 1 times [2023-11-19 08:03:25,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:25,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580518366] [2023-11-19 08:03:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 08:03:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:03:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 08:03:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:03:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:03:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:03:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:03:27,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580518366] [2023-11-19 08:03:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580518366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578185307] [2023-11-19 08:03:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:27,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:27,038 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:27,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_324114d7-273f-495e-af63-6027c6b19d18/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 08:03:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:03:27,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 08:03:27,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578185307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:27,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:27,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-19 08:03:27,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732130250] [2023-11-19 08:03:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:27,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:27,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:03:27,633 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13)