./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB --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 d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:11:02,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:11:02,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:11:02,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:11:02,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:11:02,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:11:02,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:11:02,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:11:02,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:11:02,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:11:02,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:11:02,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:11:02,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:11:02,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:11:02,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:11:02,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:11:02,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:11:02,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:11:02,864 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:11:02,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:11:02,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:11:02,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:11:02,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:11:02,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:11:02,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:11:02,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:11:02,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:11:02,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:11:02,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:11:02,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:11:02,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:11:02,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:11:02,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:11:02,868 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB 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 -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2024-11-28 02:11:03,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:11:03,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:11:03,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:11:03,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:11:03,247 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:11:03,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-28 02:11:06,418 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/data/0f8277db3/23ae4da0cdf545128e640609e0e95fbd/FLAG3c49b7a4f [2024-11-28 02:11:06,942 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:11:06,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-28 02:11:06,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/data/0f8277db3/23ae4da0cdf545128e640609e0e95fbd/FLAG3c49b7a4f [2024-11-28 02:11:06,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/data/0f8277db3/23ae4da0cdf545128e640609e0e95fbd [2024-11-28 02:11:06,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:11:06,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:11:07,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:11:07,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:11:07,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:11:07,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:11:06" (1/1) ... [2024-11-28 02:11:07,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f50433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07, skipping insertion in model container [2024-11-28 02:11:07,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:11:06" (1/1) ... [2024-11-28 02:11:07,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:11:07,622 WARN L250 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_f6570789-2002-49ca-90ae-55acae4aa3e4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2024-11-28 02:11:07,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:11:07,713 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:11:07,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-28 02:11:07,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2024-11-28 02:11:07,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2024-11-28 02:11:07,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2024-11-28 02:11:07,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2024-11-28 02:11:07,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2024-11-28 02:11:07,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2024-11-28 02:11:07,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2024-11-28 02:11:07,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2024-11-28 02:11:07,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2024-11-28 02:11:07,859 WARN L250 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_f6570789-2002-49ca-90ae-55acae4aa3e4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2024-11-28 02:11:07,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:11:07,956 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:11:07,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07 WrapperNode [2024-11-28 02:11:07,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:11:07,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:11:07,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:11:07,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:11:07,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,071 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 881 [2024-11-28 02:11:08,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:11:08,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:11:08,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:11:08,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:11:08,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,138 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 02:11:08,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:11:08,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:11:08,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:11:08,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:11:08,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (1/1) ... [2024-11-28 02:11:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:11:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:08,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:11:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:11:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 02:11:08,379 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 02:11:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:11:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 02:11:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 02:11:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 02:11:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 02:11:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-28 02:11:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-28 02:11:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 02:11:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 02:11:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 02:11:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 02:11:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 02:11:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 02:11:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 02:11:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 02:11:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 02:11:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 02:11:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 02:11:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 02:11:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 02:11:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 02:11:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 02:11:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 02:11:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 02:11:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 02:11:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 02:11:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 02:11:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 02:11:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 02:11:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 02:11:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 02:11:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 02:11:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 02:11:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 02:11:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 02:11:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 02:11:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 02:11:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 02:11:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 02:11:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:11:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:11:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 02:11:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 02:11:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 02:11:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 02:11:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 02:11:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 02:11:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 02:11:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-28 02:11:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-28 02:11:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:11:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:11:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 02:11:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 02:11:08,668 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:11:08,672 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:11:10,549 INFO L? ?]: Removed 476 outVars from TransFormulas that were not future-live. [2024-11-28 02:11:10,549 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:11:10,600 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:11:10,600 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 02:11:10,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:11:10 BoogieIcfgContainer [2024-11-28 02:11:10,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:11:10,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:11:10,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:11:10,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:11:10,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:11:06" (1/3) ... [2024-11-28 02:11:10,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590d0b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:11:10, skipping insertion in model container [2024-11-28 02:11:10,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:07" (2/3) ... [2024-11-28 02:11:10,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590d0b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:11:10, skipping insertion in model container [2024-11-28 02:11:10,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:11:10" (3/3) ... [2024-11-28 02:11:10,612 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2024-11-28 02:11:10,630 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:11:10,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product30.cil.c that has 27 procedures, 605 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:11:10,731 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:11:10,750 INFO L333 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, 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;@660df9a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:11:10,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:11:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 475 states have (on average 1.696842105263158) internal successors, (806), 495 states have internal predecessors, (806), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 02:11:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:11:10,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:10,790 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:10,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:10,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash -404746450, now seen corresponding path program 1 times [2024-11-28 02:11:10,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:10,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155648947] [2024-11-28 02:11:10,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:11,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155648947] [2024-11-28 02:11:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155648947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:11,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193805402] [2024-11-28 02:11:11,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:11,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:11,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:11,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:11:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:12,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:11:12,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 02:11:12,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193805402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:12,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:12,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-28 02:11:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894849463] [2024-11-28 02:11:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:12,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:11:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:12,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:11:12,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:11:12,415 INFO L87 Difference]: Start difference. First operand has 605 states, 475 states have (on average 1.696842105263158) internal successors, (806), 495 states have internal predecessors, (806), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:12,581 INFO L93 Difference]: Finished difference Result 1188 states and 2003 transitions. [2024-11-28 02:11:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:11:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-11-28 02:11:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:12,607 INFO L225 Difference]: With dead ends: 1188 [2024-11-28 02:11:12,607 INFO L226 Difference]: Without dead ends: 595 [2024-11-28 02:11:12,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:11:12,622 INFO L435 NwaCegarLoop]: 998 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, 998 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 [2024-11-28 02:11:12,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-28 02:11:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-28 02:11:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 468 states have (on average 1.6794871794871795) internal successors, (786), 486 states have internal predecessors, (786), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:11:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 987 transitions. [2024-11-28 02:11:12,767 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 987 transitions. Word has length 99 [2024-11-28 02:11:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:12,769 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 987 transitions. [2024-11-28 02:11:12,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 987 transitions. [2024-11-28 02:11:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:11:12,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:12,776 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-11-28 02:11:12,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:11:12,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:11:12,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:12,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 752406455, now seen corresponding path program 1 times [2024-11-28 02:11:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625294249] [2024-11-28 02:11:12,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:11:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625294249] [2024-11-28 02:11:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625294249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146553015] [2024-11-28 02:11:13,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:13,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:13,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:13,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:11:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:13,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:13,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:11:13,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146553015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:13,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912975645] [2024-11-28 02:11:13,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:13,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:13,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:13,848 INFO L87 Difference]: Start difference. First operand 595 states and 987 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:14,082 INFO L93 Difference]: Finished difference Result 1191 states and 1982 transitions. [2024-11-28 02:11:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-28 02:11:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:14,097 INFO L225 Difference]: With dead ends: 1191 [2024-11-28 02:11:14,097 INFO L226 Difference]: Without dead ends: 604 [2024-11-28 02:11:14,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:14,106 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 17 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:14,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2914 Invalid, 61 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-28 02:11:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-28 02:11:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 476 states have (on average 1.680672268907563) internal successors, (800), 494 states have internal predecessors, (800), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:11:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1001 transitions. [2024-11-28 02:11:14,161 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1001 transitions. Word has length 83 [2024-11-28 02:11:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:14,162 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 1001 transitions. [2024-11-28 02:11:14,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1001 transitions. [2024-11-28 02:11:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 02:11:14,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:14,167 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:14,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:14,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:14,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1636437728, now seen corresponding path program 1 times [2024-11-28 02:11:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113874977] [2024-11-28 02:11:14,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:14,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113874977] [2024-11-28 02:11:14,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113874977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043707798] [2024-11-28 02:11:14,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:14,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:14,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:14,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:11:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:15,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:15,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:15,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043707798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:15,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:15,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 02:11:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673887537] [2024-11-28 02:11:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:15,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:15,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:15,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:15,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:11:15,420 INFO L87 Difference]: Start difference. First operand 604 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:15,851 INFO L93 Difference]: Finished difference Result 1261 states and 2106 transitions. [2024-11-28 02:11:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:15,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-28 02:11:15,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:15,864 INFO L225 Difference]: With dead ends: 1261 [2024-11-28 02:11:15,864 INFO L226 Difference]: Without dead ends: 667 [2024-11-28 02:11:15,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:15,869 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 122 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:15,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2809 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:11:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-28 02:11:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 649. [2024-11-28 02:11:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 520 states have (on average 1.7) internal successors, (884), 538 states have internal predecessors, (884), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 02:11:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1085 transitions. [2024-11-28 02:11:15,930 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1085 transitions. Word has length 101 [2024-11-28 02:11:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:15,931 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1085 transitions. [2024-11-28 02:11:15,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1085 transitions. [2024-11-28 02:11:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:11:15,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:15,939 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:15,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:11:16,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:16,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:16,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1081250580, now seen corresponding path program 1 times [2024-11-28 02:11:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771145812] [2024-11-28 02:11:16,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771145812] [2024-11-28 02:11:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771145812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132885420] [2024-11-28 02:11:16,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:16,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:16,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:16,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:11:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:17,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:17,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:17,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132885420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 02:11:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067210888] [2024-11-28 02:11:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:17,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:17,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:17,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:17,169 INFO L87 Difference]: Start difference. First operand 649 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:17,394 INFO L93 Difference]: Finished difference Result 1313 states and 2197 transitions. [2024-11-28 02:11:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2024-11-28 02:11:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:17,403 INFO L225 Difference]: With dead ends: 1313 [2024-11-28 02:11:17,403 INFO L226 Difference]: Without dead ends: 674 [2024-11-28 02:11:17,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:17,408 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 89 mSDsluCounter, 4778 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5752 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 [2024-11-28 02:11:17,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5752 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-28 02:11:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2024-11-28 02:11:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 530 states have (on average 1.6962264150943396) internal successors, (899), 550 states have internal predecessors, (899), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-28 02:11:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1106 transitions. [2024-11-28 02:11:17,480 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1106 transitions. Word has length 103 [2024-11-28 02:11:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:17,483 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1106 transitions. [2024-11-28 02:11:17,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1106 transitions. [2024-11-28 02:11:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:11:17,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:17,490 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:17,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:11:17,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 02:11:17,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:17,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash -663455537, now seen corresponding path program 1 times [2024-11-28 02:11:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382150674] [2024-11-28 02:11:17,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:17,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:18,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382150674] [2024-11-28 02:11:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382150674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836469395] [2024-11-28 02:11:18,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:18,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:18,006 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:18,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:11:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:18,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:18,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:18,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:18,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836469395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 02:11:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951852924] [2024-11-28 02:11:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:18,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:18,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:18,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:18,547 INFO L87 Difference]: Start difference. First operand 662 states and 1106 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:18,734 INFO L93 Difference]: Finished difference Result 1333 states and 2228 transitions. [2024-11-28 02:11:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:18,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-28 02:11:18,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:18,744 INFO L225 Difference]: With dead ends: 1333 [2024-11-28 02:11:18,744 INFO L226 Difference]: Without dead ends: 683 [2024-11-28 02:11:18,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:18,750 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 100 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:18,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5740 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-28 02:11:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 662. [2024-11-28 02:11:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 530 states have (on average 1.6962264150943396) internal successors, (899), 550 states have internal predecessors, (899), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-28 02:11:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1106 transitions. [2024-11-28 02:11:18,806 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1106 transitions. Word has length 104 [2024-11-28 02:11:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:18,806 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1106 transitions. [2024-11-28 02:11:18,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1106 transitions. [2024-11-28 02:11:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:11:18,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:18,810 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:18,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:11:19,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:19,011 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:19,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2075748807, now seen corresponding path program 1 times [2024-11-28 02:11:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159580712] [2024-11-28 02:11:19,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:19,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:11:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159580712] [2024-11-28 02:11:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159580712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395972341] [2024-11-28 02:11:19,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:19,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:19,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:11:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:19,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:19,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:11:19,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395972341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:19,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:19,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:19,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519774508] [2024-11-28 02:11:19,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:19,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:19,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:19,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:19,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:19,640 INFO L87 Difference]: Start difference. First operand 662 states and 1106 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:19,759 INFO L93 Difference]: Finished difference Result 1327 states and 2218 transitions. [2024-11-28 02:11:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:19,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-11-28 02:11:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:19,767 INFO L225 Difference]: With dead ends: 1327 [2024-11-28 02:11:19,767 INFO L226 Difference]: Without dead ends: 673 [2024-11-28 02:11:19,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:19,772 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 12 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:19,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2916 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-28 02:11:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 671. [2024-11-28 02:11:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-28 02:11:19,815 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 104 [2024-11-28 02:11:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:19,816 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-28 02:11:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-28 02:11:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:11:19,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:19,820 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:19,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:20,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:11:20,021 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:20,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1179758736, now seen corresponding path program 1 times [2024-11-28 02:11:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334022643] [2024-11-28 02:11:20,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:20,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334022643] [2024-11-28 02:11:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334022643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915848] [2024-11-28 02:11:20,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:20,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:20,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:20,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:20,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:11:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:20,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:20,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:20,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:20,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 02:11:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085555269] [2024-11-28 02:11:20,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:20,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:20,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:20,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:20,895 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:21,088 INFO L93 Difference]: Finished difference Result 1342 states and 2231 transitions. [2024-11-28 02:11:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2024-11-28 02:11:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:21,100 INFO L225 Difference]: With dead ends: 1342 [2024-11-28 02:11:21,101 INFO L226 Difference]: Without dead ends: 694 [2024-11-28 02:11:21,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:21,106 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 111 mSDsluCounter, 4754 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5728 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:21,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5728 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-28 02:11:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 671. [2024-11-28 02:11:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-28 02:11:21,155 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 105 [2024-11-28 02:11:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:21,156 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-28 02:11:21,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-28 02:11:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:11:21,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:21,181 INFO L218 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] [2024-11-28 02:11:21,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:21,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:21,381 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:21,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash 182637115, now seen corresponding path program 1 times [2024-11-28 02:11:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175199528] [2024-11-28 02:11:21,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:21,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:21,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175199528] [2024-11-28 02:11:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175199528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055964033] [2024-11-28 02:11:21,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:21,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:21,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:21,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:21,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:11:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:21,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:11:21,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:11:22,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055964033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:22,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:22,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:11:22,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419813363] [2024-11-28 02:11:22,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:22,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:22,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:22,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:22,077 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:22,357 INFO L93 Difference]: Finished difference Result 1345 states and 2235 transitions. [2024-11-28 02:11:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:22,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-28 02:11:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:22,365 INFO L225 Difference]: With dead ends: 1345 [2024-11-28 02:11:22,365 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 02:11:22,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:22,371 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 95 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:22,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6651 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 02:11:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 671. [2024-11-28 02:11:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-28 02:11:22,427 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 89 [2024-11-28 02:11:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:22,428 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-28 02:11:22,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-28 02:11:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:11:22,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:22,431 INFO L218 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] [2024-11-28 02:11:22,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:11:22,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:22,632 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:22,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -112908964, now seen corresponding path program 1 times [2024-11-28 02:11:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826205997] [2024-11-28 02:11:22,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826205997] [2024-11-28 02:11:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826205997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635259686] [2024-11-28 02:11:22,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:22,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:22,833 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:22,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:11:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:23,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:11:23,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:11:23,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635259686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:11:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004979799] [2024-11-28 02:11:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:23,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:23,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:23,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:23,304 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:23,597 INFO L93 Difference]: Finished difference Result 1345 states and 2235 transitions. [2024-11-28 02:11:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-11-28 02:11:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:23,604 INFO L225 Difference]: With dead ends: 1345 [2024-11-28 02:11:23,604 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 02:11:23,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:23,608 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 105 mSDsluCounter, 5675 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6639 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:23,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6639 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 02:11:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 671. [2024-11-28 02:11:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-28 02:11:23,646 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 90 [2024-11-28 02:11:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:23,646 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-28 02:11:23,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-28 02:11:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:11:23,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:23,649 INFO L218 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] [2024-11-28 02:11:23,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:11:23,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:23,854 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:23,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 569680160, now seen corresponding path program 1 times [2024-11-28 02:11:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837306994] [2024-11-28 02:11:23,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:24,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837306994] [2024-11-28 02:11:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837306994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204250315] [2024-11-28 02:11:24,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:24,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:24,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:11:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:24,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:11:24,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:11:24,455 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204250315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:24,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:24,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:11:24,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74901199] [2024-11-28 02:11:24,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:24,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:24,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:24,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:11:24,457 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:24,695 INFO L93 Difference]: Finished difference Result 1336 states and 2220 transitions. [2024-11-28 02:11:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2024-11-28 02:11:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:24,702 INFO L225 Difference]: With dead ends: 1336 [2024-11-28 02:11:24,702 INFO L226 Difference]: Without dead ends: 688 [2024-11-28 02:11:24,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:24,706 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 115 mSDsluCounter, 5663 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6627 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:24,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6627 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-28 02:11:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 671. [2024-11-28 02:11:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-28 02:11:24,744 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 91 [2024-11-28 02:11:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:24,744 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-28 02:11:24,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-28 02:11:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:11:24,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:24,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-28 02:11:24,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:11:24,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:24,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:24,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 691155582, now seen corresponding path program 1 times [2024-11-28 02:11:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439423812] [2024-11-28 02:11:24,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:25,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:25,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439423812] [2024-11-28 02:11:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439423812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119353020] [2024-11-28 02:11:25,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:25,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:25,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:11:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:25,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:25,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:11:25,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119353020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:25,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:25,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:25,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500328663] [2024-11-28 02:11:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:25,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:25,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:25,453 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:25,546 INFO L93 Difference]: Finished difference Result 1308 states and 2180 transitions. [2024-11-28 02:11:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:25,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-28 02:11:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:25,553 INFO L225 Difference]: With dead ends: 1308 [2024-11-28 02:11:25,553 INFO L226 Difference]: Without dead ends: 671 [2024-11-28 02:11:25,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:25,558 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 20 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:25,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2910 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-28 02:11:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-28 02:11:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.678438661710037) internal successors, (903), 558 states have internal predecessors, (903), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-28 02:11:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1109 transitions. [2024-11-28 02:11:25,592 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1109 transitions. Word has length 91 [2024-11-28 02:11:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:25,593 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1109 transitions. [2024-11-28 02:11:25,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1109 transitions. [2024-11-28 02:11:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 02:11:25,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:25,598 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:25,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:25,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:25,798 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:25,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -475617040, now seen corresponding path program 1 times [2024-11-28 02:11:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725698682] [2024-11-28 02:11:25,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:11:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:25,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725698682] [2024-11-28 02:11:25,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725698682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:25,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040590034] [2024-11-28 02:11:25,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:25,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:25,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:11:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:26,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:26,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:11:26,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040590034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:26,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888277936] [2024-11-28 02:11:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:26,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:26,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:26,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:26,341 INFO L87 Difference]: Start difference. First operand 671 states and 1109 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:26,582 INFO L93 Difference]: Finished difference Result 1337 states and 2220 transitions. [2024-11-28 02:11:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2024-11-28 02:11:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:26,591 INFO L225 Difference]: With dead ends: 1337 [2024-11-28 02:11:26,591 INFO L226 Difference]: Without dead ends: 758 [2024-11-28 02:11:26,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:26,596 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 171 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:26,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2782 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-28 02:11:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 716. [2024-11-28 02:11:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 582 states have (on average 1.6958762886597938) internal successors, (987), 602 states have internal predecessors, (987), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-28 02:11:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1192 transitions. [2024-11-28 02:11:26,632 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1192 transitions. Word has length 108 [2024-11-28 02:11:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:26,633 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1192 transitions. [2024-11-28 02:11:26,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:11:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1192 transitions. [2024-11-28 02:11:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:11:26,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:26,636 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-28 02:11:26,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:11:26,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:11:26,837 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:26,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 91583882, now seen corresponding path program 1 times [2024-11-28 02:11:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302589300] [2024-11-28 02:11:26,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302589300] [2024-11-28 02:11:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302589300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418587601] [2024-11-28 02:11:26,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:26,937 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:26,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:11:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:27,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:27,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:11:27,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418587601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 02:11:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590063157] [2024-11-28 02:11:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:27,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:27,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:27,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:11:27,354 INFO L87 Difference]: Start difference. First operand 716 states and 1192 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:27,505 INFO L93 Difference]: Finished difference Result 1330 states and 2207 transitions. [2024-11-28 02:11:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-28 02:11:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:27,514 INFO L225 Difference]: With dead ends: 1330 [2024-11-28 02:11:27,514 INFO L226 Difference]: Without dead ends: 751 [2024-11-28 02:11:27,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:27,519 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 89 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5761 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:27,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5761 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-28 02:11:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 729. [2024-11-28 02:11:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-28 02:11:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-28 02:11:27,557 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 93 [2024-11-28 02:11:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:27,557 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-28 02:11:27,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:11:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-28 02:11:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:11:27,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:27,561 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:27,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:27,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:27,762 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:27,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1921160586, now seen corresponding path program 1 times [2024-11-28 02:11:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468734635] [2024-11-28 02:11:27,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:27,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:11:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468734635] [2024-11-28 02:11:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468734635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360599004] [2024-11-28 02:11:27,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:27,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:27,869 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:27,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:11:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:28,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:28,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:11:28,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360599004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 02:11:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015983854] [2024-11-28 02:11:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:28,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:28,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:28,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:11:28,323 INFO L87 Difference]: Start difference. First operand 729 states and 1211 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:28,468 INFO L93 Difference]: Finished difference Result 1339 states and 2221 transitions. [2024-11-28 02:11:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-28 02:11:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:28,477 INFO L225 Difference]: With dead ends: 1339 [2024-11-28 02:11:28,477 INFO L226 Difference]: Without dead ends: 760 [2024-11-28 02:11:28,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:28,481 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 100 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:28,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5749 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-28 02:11:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 729. [2024-11-28 02:11:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-28 02:11:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-28 02:11:28,522 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 110 [2024-11-28 02:11:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-28 02:11:28,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-28 02:11:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:11:28,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:28,526 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:28,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:11:28,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:28,727 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:28,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash -278305034, now seen corresponding path program 1 times [2024-11-28 02:11:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265232107] [2024-11-28 02:11:28,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:11:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265232107] [2024-11-28 02:11:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265232107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809208664] [2024-11-28 02:11:28,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:28,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:28,847 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:28,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:11:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:29,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:11:29,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:11:29,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809208664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:29,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 02:11:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031929249] [2024-11-28 02:11:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:29,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:29,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:29,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:29,417 INFO L87 Difference]: Start difference. First operand 729 states and 1211 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:29,687 INFO L93 Difference]: Finished difference Result 1342 states and 2224 transitions. [2024-11-28 02:11:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:29,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-28 02:11:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:29,697 INFO L225 Difference]: With dead ends: 1342 [2024-11-28 02:11:29,697 INFO L226 Difference]: Without dead ends: 763 [2024-11-28 02:11:29,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:29,704 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 96 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6661 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:29,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6661 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-28 02:11:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 729. [2024-11-28 02:11:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-28 02:11:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-28 02:11:29,750 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 110 [2024-11-28 02:11:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:29,751 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-28 02:11:29,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-28 02:11:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:11:29,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:29,755 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2024-11-28 02:11:29,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:29,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:29,956 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:29,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash 903316865, now seen corresponding path program 1 times [2024-11-28 02:11:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:29,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023360644] [2024-11-28 02:11:29,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:29,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:30,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023360644] [2024-11-28 02:11:30,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023360644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916098021] [2024-11-28 02:11:30,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:30,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:30,096 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:30,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:11:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:30,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:30,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:11:30,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916098021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:30,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034162234] [2024-11-28 02:11:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:30,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:30,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:30,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:30,565 INFO L87 Difference]: Start difference. First operand 729 states and 1211 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:30,644 INFO L93 Difference]: Finished difference Result 1384 states and 2303 transitions. [2024-11-28 02:11:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:11:30,645 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-11-28 02:11:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:30,653 INFO L225 Difference]: With dead ends: 1384 [2024-11-28 02:11:30,653 INFO L226 Difference]: Without dead ends: 729 [2024-11-28 02:11:30,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:30,659 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 2 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:30,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2919 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-28 02:11:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2024-11-28 02:11:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6875) internal successors, (999), 614 states have internal predecessors, (999), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-28 02:11:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1208 transitions. [2024-11-28 02:11:30,699 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1208 transitions. Word has length 94 [2024-11-28 02:11:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:30,699 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1208 transitions. [2024-11-28 02:11:30,699 INFO L472 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1208 transitions. [2024-11-28 02:11:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 02:11:30,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:30,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:11:30,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:30,904 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:30,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash -244957309, now seen corresponding path program 1 times [2024-11-28 02:11:30,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734370916] [2024-11-28 02:11:30,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:11:31,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:31,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734370916] [2024-11-28 02:11:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734370916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:31,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221840685] [2024-11-28 02:11:31,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:31,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:31,022 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:31,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:11:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:31,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:11:31,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:11:31,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221840685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 02:11:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810593658] [2024-11-28 02:11:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:31,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:31,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:31,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:31,624 INFO L87 Difference]: Start difference. First operand 729 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:31,880 INFO L93 Difference]: Finished difference Result 1333 states and 2207 transitions. [2024-11-28 02:11:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2024-11-28 02:11:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:31,889 INFO L225 Difference]: With dead ends: 1333 [2024-11-28 02:11:31,890 INFO L226 Difference]: Without dead ends: 754 [2024-11-28 02:11:31,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:31,895 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 106 mSDsluCounter, 5669 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6631 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:31,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6631 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-28 02:11:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 729. [2024-11-28 02:11:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6875) internal successors, (999), 614 states have internal predecessors, (999), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-28 02:11:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1208 transitions. [2024-11-28 02:11:31,964 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1208 transitions. Word has length 111 [2024-11-28 02:11:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:31,965 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1208 transitions. [2024-11-28 02:11:31,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:11:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1208 transitions. [2024-11-28 02:11:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:11:31,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:31,971 INFO L218 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] [2024-11-28 02:11:31,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:11:32,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:32,173 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:32,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash 684532644, now seen corresponding path program 1 times [2024-11-28 02:11:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:32,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002611215] [2024-11-28 02:11:32,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:11:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002611215] [2024-11-28 02:11:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002611215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683627013] [2024-11-28 02:11:32,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:32,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:32,285 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:32,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:11:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:32,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:11:32,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:11:32,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683627013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:32,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-28 02:11:32,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460227584] [2024-11-28 02:11:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:32,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:11:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:32,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:11:32,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:11:32,944 INFO L87 Difference]: Start difference. First operand 729 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:33,110 INFO L93 Difference]: Finished difference Result 1866 states and 3118 transitions. [2024-11-28 02:11:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:11:33,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-11-28 02:11:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:33,121 INFO L225 Difference]: With dead ends: 1866 [2024-11-28 02:11:33,121 INFO L226 Difference]: Without dead ends: 1291 [2024-11-28 02:11:33,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:11:33,125 INFO L435 NwaCegarLoop]: 1048 mSDtfsCounter, 893 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:33,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1984 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2024-11-28 02:11:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1226. [2024-11-28 02:11:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 996 states have (on average 1.6927710843373494) internal successors, (1686), 1027 states have internal predecessors, (1686), 178 states have call successors, (178), 50 states have call predecessors, (178), 51 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-28 02:11:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2049 transitions. [2024-11-28 02:11:33,218 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2049 transitions. Word has length 96 [2024-11-28 02:11:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:33,218 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 2049 transitions. [2024-11-28 02:11:33,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2049 transitions. [2024-11-28 02:11:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:11:33,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:33,224 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:33,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:11:33,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:11:33,426 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:33,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash 848880328, now seen corresponding path program 1 times [2024-11-28 02:11:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481586894] [2024-11-28 02:11:33,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:11:33,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481586894] [2024-11-28 02:11:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481586894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030294564] [2024-11-28 02:11:33,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:33,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:33,548 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:33,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:11:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:33,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:11:33,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:33,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030294564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:33,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:33,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:11:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021922023] [2024-11-28 02:11:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:33,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:33,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:33,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:33,962 INFO L87 Difference]: Start difference. First operand 1226 states and 2049 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:34,041 INFO L93 Difference]: Finished difference Result 2340 states and 3933 transitions. [2024-11-28 02:11:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-28 02:11:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:34,052 INFO L225 Difference]: With dead ends: 2340 [2024-11-28 02:11:34,053 INFO L226 Difference]: Without dead ends: 1268 [2024-11-28 02:11:34,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:34,058 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 54 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:34,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2955 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2024-11-28 02:11:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2024-11-28 02:11:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1036 states have (on average 1.693050193050193) internal successors, (1754), 1067 states have internal predecessors, (1754), 178 states have call successors, (178), 52 states have call predecessors, (178), 53 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-28 02:11:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 2117 transitions. [2024-11-28 02:11:34,132 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 2117 transitions. Word has length 134 [2024-11-28 02:11:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:34,133 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 2117 transitions. [2024-11-28 02:11:34,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 2117 transitions. [2024-11-28 02:11:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:11:34,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:34,139 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:34,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:11:34,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:34,340 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:34,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1239688855, now seen corresponding path program 1 times [2024-11-28 02:11:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028869983] [2024-11-28 02:11:34,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:11:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028869983] [2024-11-28 02:11:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028869983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485555951] [2024-11-28 02:11:34,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:34,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:34,477 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:34,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:11:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:34,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:11:34,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:11:34,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485555951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:34,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 02:11:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123038202] [2024-11-28 02:11:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:11:34,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:34,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:11:34,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:34,984 INFO L87 Difference]: Start difference. First operand 1268 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:36,405 INFO L93 Difference]: Finished difference Result 4484 states and 7675 transitions. [2024-11-28 02:11:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:11:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2024-11-28 02:11:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:36,431 INFO L225 Difference]: With dead ends: 4484 [2024-11-28 02:11:36,432 INFO L226 Difference]: Without dead ends: 3370 [2024-11-28 02:11:36,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:11:36,439 INFO L435 NwaCegarLoop]: 1068 mSDtfsCounter, 2448 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:36,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 3316 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:11:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2024-11-28 02:11:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3350. [2024-11-28 02:11:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 2726 states have (on average 1.6647101980924432) internal successors, (4538), 2807 states have internal predecessors, (4538), 482 states have call successors, (482), 144 states have call predecessors, (482), 141 states have return successors, (609), 443 states have call predecessors, (609), 474 states have call successors, (609) [2024-11-28 02:11:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5629 transitions. [2024-11-28 02:11:36,612 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5629 transitions. Word has length 134 [2024-11-28 02:11:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:36,612 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 5629 transitions. [2024-11-28 02:11:36,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5629 transitions. [2024-11-28 02:11:36,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:11:36,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:36,621 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:36,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:36,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:36,822 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1375309288, now seen corresponding path program 1 times [2024-11-28 02:11:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839793081] [2024-11-28 02:11:36,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:11:36,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839793081] [2024-11-28 02:11:36,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839793081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526454245] [2024-11-28 02:11:36,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:36,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:36,932 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:36,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:11:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:37,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:11:37,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:11:37,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526454245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:37,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 02:11:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981736504] [2024-11-28 02:11:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:37,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:37,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:37,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:11:37,338 INFO L87 Difference]: Start difference. First operand 3350 states and 5629 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:37,513 INFO L93 Difference]: Finished difference Result 6677 states and 11242 transitions. [2024-11-28 02:11:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-28 02:11:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:37,548 INFO L225 Difference]: With dead ends: 6677 [2024-11-28 02:11:37,548 INFO L226 Difference]: Without dead ends: 3315 [2024-11-28 02:11:37,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:11:37,568 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 7 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:37,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2911 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2024-11-28 02:11:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3315. [2024-11-28 02:11:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2694 states have (on average 1.658129175946548) internal successors, (4467), 2773 states have internal predecessors, (4467), 481 states have call successors, (481), 144 states have call predecessors, (481), 139 states have return successors, (606), 442 states have call predecessors, (606), 473 states have call successors, (606) [2024-11-28 02:11:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 5554 transitions. [2024-11-28 02:11:37,735 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 5554 transitions. Word has length 134 [2024-11-28 02:11:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:37,736 INFO L471 AbstractCegarLoop]: Abstraction has 3315 states and 5554 transitions. [2024-11-28 02:11:37,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 5554 transitions. [2024-11-28 02:11:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:11:37,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:37,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:37,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:11:37,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:11:37,944 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:37,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash -750650236, now seen corresponding path program 1 times [2024-11-28 02:11:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:37,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261727258] [2024-11-28 02:11:37,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261727258] [2024-11-28 02:11:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261727258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968083147] [2024-11-28 02:11:38,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:38,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:38,179 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:38,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:11:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:38,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:11:38,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:11:38,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968083147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-28 02:11:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774101603] [2024-11-28 02:11:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:38,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:11:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:38,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:11:38,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:38,663 INFO L87 Difference]: Start difference. First operand 3315 states and 5554 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:38,884 INFO L93 Difference]: Finished difference Result 8530 states and 14371 transitions. [2024-11-28 02:11:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:38,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-28 02:11:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:38,935 INFO L225 Difference]: With dead ends: 8530 [2024-11-28 02:11:38,935 INFO L226 Difference]: Without dead ends: 5334 [2024-11-28 02:11:38,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:11:38,959 INFO L435 NwaCegarLoop]: 1367 mSDtfsCounter, 934 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:38,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 4652 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2024-11-28 02:11:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5330. [2024-11-28 02:11:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 4364 states have (on average 1.6338221814848763) internal successors, (7130), 4452 states have internal predecessors, (7130), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-28 02:11:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 8925 transitions. [2024-11-28 02:11:39,383 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 8925 transitions. Word has length 134 [2024-11-28 02:11:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:39,384 INFO L471 AbstractCegarLoop]: Abstraction has 5330 states and 8925 transitions. [2024-11-28 02:11:39,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 8925 transitions. [2024-11-28 02:11:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:11:39,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:39,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:39,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:11:39,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:11:39,594 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:39,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash 603480037, now seen corresponding path program 1 times [2024-11-28 02:11:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:39,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963020781] [2024-11-28 02:11:39,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:39,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963020781] [2024-11-28 02:11:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963020781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756963613] [2024-11-28 02:11:39,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:39,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:39,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:39,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:39,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:11:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:40,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:11:40,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:11:40,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:40,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756963613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:40,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 02:11:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926968936] [2024-11-28 02:11:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:40,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:40,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:40,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:40,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:40,296 INFO L87 Difference]: Start difference. First operand 5330 states and 8925 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:40,645 INFO L93 Difference]: Finished difference Result 10756 states and 17998 transitions. [2024-11-28 02:11:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2024-11-28 02:11:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:40,690 INFO L225 Difference]: With dead ends: 10756 [2024-11-28 02:11:40,690 INFO L226 Difference]: Without dead ends: 5443 [2024-11-28 02:11:40,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:11:40,719 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 122 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5759 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:40,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5759 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2024-11-28 02:11:40,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5323. [2024-11-28 02:11:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 4357 states have (on average 1.6327748450768877) internal successors, (7114), 4445 states have internal predecessors, (7114), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-28 02:11:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8909 transitions. [2024-11-28 02:11:41,083 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8909 transitions. Word has length 135 [2024-11-28 02:11:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:41,083 INFO L471 AbstractCegarLoop]: Abstraction has 5323 states and 8909 transitions. [2024-11-28 02:11:41,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8909 transitions. [2024-11-28 02:11:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 02:11:41,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:41,092 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:41,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:41,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6570789-2002-49ca-90ae-55acae4aa3e4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:11:41,293 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:41,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1129294650, now seen corresponding path program 1 times [2024-11-28 02:11:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116169861] [2024-11-28 02:11:41,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:11:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:41,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116169861] [2024-11-28 02:11:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116169861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:11:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893688200] [2024-11-28 02:11:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:41,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:11:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:41,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:11:41,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:41,519 INFO L87 Difference]: Start difference. First operand 5323 states and 8909 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:41,831 INFO L93 Difference]: Finished difference Result 10660 states and 17846 transitions. [2024-11-28 02:11:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:41,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2024-11-28 02:11:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:41,890 INFO L225 Difference]: With dead ends: 10660 [2024-11-28 02:11:41,890 INFO L226 Difference]: Without dead ends: 5445 [2024-11-28 02:11:41,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:11:41,919 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 126 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:41,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5703 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:41,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2024-11-28 02:11:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5323. [2024-11-28 02:11:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 4357 states have (on average 1.6327748450768877) internal successors, (7114), 4445 states have internal predecessors, (7114), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-28 02:11:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8909 transitions. [2024-11-28 02:11:42,309 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8909 transitions. Word has length 136 [2024-11-28 02:11:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:42,309 INFO L471 AbstractCegarLoop]: Abstraction has 5323 states and 8909 transitions. [2024-11-28 02:11:42,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:11:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8909 transitions. [2024-11-28 02:11:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 02:11:42,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:42,319 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:42,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:11:42,320 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -990165794, now seen corresponding path program 1 times [2024-11-28 02:11:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535949156] [2024-11-28 02:11:42,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:42,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:11:42,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535949156] [2024-11-28 02:11:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535949156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:11:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389301674] [2024-11-28 02:11:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:42,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:11:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:42,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:11:42,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:11:42,449 INFO L87 Difference]: Start difference. First operand 5323 states and 8909 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:42,744 INFO L93 Difference]: Finished difference Result 10601 states and 17761 transitions. [2024-11-28 02:11:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:11:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2024-11-28 02:11:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:42,794 INFO L225 Difference]: With dead ends: 10601 [2024-11-28 02:11:42,794 INFO L226 Difference]: Without dead ends: 5281 [2024-11-28 02:11:42,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:11:42,830 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 8 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:42,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2910 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:11:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2024-11-28 02:11:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5281. [2024-11-28 02:11:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 4318 states have (on average 1.6306160259379343) internal successors, (7041), 4404 states have internal predecessors, (7041), 729 states have call successors, (729), 246 states have call predecessors, (729), 233 states have return successors, (1062), 678 states have call predecessors, (1062), 715 states have call successors, (1062) [2024-11-28 02:11:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 8832 transitions. [2024-11-28 02:11:43,196 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 8832 transitions. Word has length 136 [2024-11-28 02:11:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:43,197 INFO L471 AbstractCegarLoop]: Abstraction has 5281 states and 8832 transitions. [2024-11-28 02:11:43,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:11:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 8832 transitions. [2024-11-28 02:11:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 02:11:43,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:43,208 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:43,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:11:43,208 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:43,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash -982922919, now seen corresponding path program 1 times [2024-11-28 02:11:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:43,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582963685] [2024-11-28 02:11:43,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:43,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:11:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:43,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582963685] [2024-11-28 02:11:43,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582963685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:43,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:43,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:11:43,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004859488] [2024-11-28 02:11:43,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:43,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:11:43,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:43,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:11:43,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:43,515 INFO L87 Difference]: Start difference. First operand 5281 states and 8832 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:11:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:49,091 INFO L93 Difference]: Finished difference Result 14465 states and 25140 transitions. [2024-11-28 02:11:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2024-11-28 02:11:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:49,169 INFO L225 Difference]: With dead ends: 14465 [2024-11-28 02:11:49,169 INFO L226 Difference]: Without dead ends: 9254 [2024-11-28 02:11:49,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:49,215 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 4104 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 4271 mSolverCounterSat, 1149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1149 IncrementalHoareTripleChecker+Valid, 4271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:49,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 2070 Invalid, 5420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1149 Valid, 4271 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:11:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9254 states. [2024-11-28 02:11:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9254 to 8679. [2024-11-28 02:11:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8679 states, 6863 states have (on average 1.6026519015008014) internal successors, (10999), 7078 states have internal predecessors, (10999), 1432 states have call successors, (1432), 372 states have call predecessors, (1432), 383 states have return successors, (2136), 1384 states have call predecessors, (2136), 1412 states have call successors, (2136) [2024-11-28 02:11:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 14567 transitions. [2024-11-28 02:11:49,805 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 14567 transitions. Word has length 137 [2024-11-28 02:11:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:49,806 INFO L471 AbstractCegarLoop]: Abstraction has 8679 states and 14567 transitions. [2024-11-28 02:11:49,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:11:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 14567 transitions. [2024-11-28 02:11:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 02:11:49,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:49,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:49,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:11:49,817 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:49,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 364860418, now seen corresponding path program 1 times [2024-11-28 02:11:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:49,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516325525] [2024-11-28 02:11:49,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:49,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:11:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516325525] [2024-11-28 02:11:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516325525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:50,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:50,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:11:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867291010] [2024-11-28 02:11:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:50,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:11:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:50,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:11:50,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:50,051 INFO L87 Difference]: Start difference. First operand 8679 states and 14567 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:11:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:55,754 INFO L93 Difference]: Finished difference Result 27533 states and 48840 transitions. [2024-11-28 02:11:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 138 [2024-11-28 02:11:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:55,969 INFO L225 Difference]: With dead ends: 27533 [2024-11-28 02:11:55,970 INFO L226 Difference]: Without dead ends: 18924 [2024-11-28 02:11:56,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:56,070 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 4143 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 4233 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4182 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 4233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:56,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4182 Valid, 2089 Invalid, 5420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1187 Valid, 4233 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:11:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2024-11-28 02:11:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 17076. [2024-11-28 02:11:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17076 states, 12795 states have (on average 1.5741305197342712) internal successors, (20141), 13379 states have internal predecessors, (20141), 3555 states have call successors, (3555), 624 states have call predecessors, (3555), 725 states have return successors, (5541), 3555 states have call predecessors, (5541), 3523 states have call successors, (5541) [2024-11-28 02:11:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 29237 transitions. [2024-11-28 02:11:57,530 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 29237 transitions. Word has length 138 [2024-11-28 02:11:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:57,531 INFO L471 AbstractCegarLoop]: Abstraction has 17076 states and 29237 transitions. [2024-11-28 02:11:57,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:11:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 29237 transitions. [2024-11-28 02:11:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 02:11:57,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:57,540 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:57,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:11:57,540 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:57,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1252646316, now seen corresponding path program 1 times [2024-11-28 02:11:57,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:57,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177245070] [2024-11-28 02:11:57,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:11:57,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:57,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177245070] [2024-11-28 02:11:57,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177245070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:57,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:57,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:11:57,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302736835] [2024-11-28 02:11:57,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:57,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:11:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:57,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:11:57,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:57,770 INFO L87 Difference]: Start difference. First operand 17076 states and 29237 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:12:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:05,926 INFO L93 Difference]: Finished difference Result 61880 states and 114271 transitions. [2024-11-28 02:12:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:12:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 139 [2024-11-28 02:12:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:06,367 INFO L225 Difference]: With dead ends: 61880 [2024-11-28 02:12:06,368 INFO L226 Difference]: Without dead ends: 44874 [2024-11-28 02:12:06,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:12:06,613 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 4160 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 4244 mSolverCounterSat, 1188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 4244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:06,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 2135 Invalid, 5432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1188 Valid, 4244 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:12:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44874 states. [2024-11-28 02:12:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44874 to 39330. [2024-11-28 02:12:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39330 states, 27638 states have (on average 1.546276865185614) internal successors, (42736), 29308 states have internal predecessors, (42736), 10126 states have call successors, (10126), 1128 states have call predecessors, (10126), 1565 states have return successors, (16980), 10375 states have call predecessors, (16980), 10070 states have call successors, (16980) [2024-11-28 02:12:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39330 states to 39330 states and 69842 transitions. [2024-11-28 02:12:11,067 INFO L78 Accepts]: Start accepts. Automaton has 39330 states and 69842 transitions. Word has length 139 [2024-11-28 02:12:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 39330 states and 69842 transitions. [2024-11-28 02:12:11,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:12:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 39330 states and 69842 transitions. [2024-11-28 02:12:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:12:11,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:11,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:11,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:12:11,082 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:11,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash -304864739, now seen corresponding path program 1 times [2024-11-28 02:12:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343424300] [2024-11-28 02:12:11,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:12:11,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343424300] [2024-11-28 02:12:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343424300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858977011] [2024-11-28 02:12:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:11,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:11,385 INFO L87 Difference]: Start difference. First operand 39330 states and 69842 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:12:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:27,205 INFO L93 Difference]: Finished difference Result 158612 states and 307697 transitions. [2024-11-28 02:12:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:12:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 140 [2024-11-28 02:12:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:29,542 INFO L225 Difference]: With dead ends: 158612 [2024-11-28 02:12:29,542 INFO L226 Difference]: Without dead ends: 119352 [2024-11-28 02:12:30,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:12:30,721 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 4200 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:30,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4241 Valid, 2153 Invalid, 5453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:12:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119352 states. [2024-11-28 02:12:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119352 to 103499. [2024-11-28 02:12:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103499 states, 68360 states have (on average 1.5220157987126974) internal successors, (104045), 73348 states have internal predecessors, (104045), 31293 states have call successors, (31293), 2136 states have call predecessors, (31293), 3845 states have return successors, (57093), 32631 states have call predecessors, (57093), 31189 states have call successors, (57093) [2024-11-28 02:12:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103499 states to 103499 states and 192431 transitions. [2024-11-28 02:12:41,938 INFO L78 Accepts]: Start accepts. Automaton has 103499 states and 192431 transitions. Word has length 140 [2024-11-28 02:12:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:41,938 INFO L471 AbstractCegarLoop]: Abstraction has 103499 states and 192431 transitions. [2024-11-28 02:12:41,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:12:41,939 INFO L276 IsEmpty]: Start isEmpty. Operand 103499 states and 192431 transitions. [2024-11-28 02:12:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:12:41,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:41,946 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:41,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:12:41,947 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:41,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:41,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1437524145, now seen corresponding path program 1 times [2024-11-28 02:12:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057002100] [2024-11-28 02:12:41,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:41,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:12:42,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057002100] [2024-11-28 02:12:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057002100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:42,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:42,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907353882] [2024-11-28 02:12:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:42,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:42,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:42,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:42,190 INFO L87 Difference]: Start difference. First operand 103499 states and 192431 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)