./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.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_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/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_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/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_5a4df368-caff-4687-910a-32a751ac4ca2/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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:34:48,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:34:48,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:34:48,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:34:48,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:34:48,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:34:48,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:34:48,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:34:48,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:34:48,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:34:48,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:34:48,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:34:48,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:34:48,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:34:48,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:34:48,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:34:48,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:34:48,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:34:48,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:34:48,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:34:48,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:34:48,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:34:48,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:34:48,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:34:48,202 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:34:48,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:34:48,202 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:34:48,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:34:48,202 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:34:48,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:34:48,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:34:48,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:34:48,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:34:48,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:34:48,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:34:48,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:34:48,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:34:48,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:34:48,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:34:48,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:34:48,205 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:34:48,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:34:48,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:34:48,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:34:48,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:34:48,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:34:48,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:34:48,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:34:48,206 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_5a4df368-caff-4687-910a-32a751ac4ca2/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 -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2024-11-28 03:34:48,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:34:48,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:34:48,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:34:48,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:34:48,588 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:34:48,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2024-11-28 03:34:51,999 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/data/facc2e906/b3453cf2a49b4f2c893ae2524680e666/FLAG9971097a4 [2024-11-28 03:34:52,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:34:52,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2024-11-28 03:34:52,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/data/facc2e906/b3453cf2a49b4f2c893ae2524680e666/FLAG9971097a4 [2024-11-28 03:34:52,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/data/facc2e906/b3453cf2a49b4f2c893ae2524680e666 [2024-11-28 03:34:52,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:34:52,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:34:52,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:34:52,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:34:52,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:34:52,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:34:52" (1/1) ... [2024-11-28 03:34:52,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed01837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:52, skipping insertion in model container [2024-11-28 03:34:52,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:34:52" (1/1) ... [2024-11-28 03:34:52,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:34:53,357 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_5a4df368-caff-4687-910a-32a751ac4ca2/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-11-28 03:34:53,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:34:53,604 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:34:53,615 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2024-11-28 03:34:53,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [236] [2024-11-28 03:34:53,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1824] [2024-11-28 03:34:53,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1833] [2024-11-28 03:34:53,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2199] [2024-11-28 03:34:53,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2861] [2024-11-28 03:34:53,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2875] [2024-11-28 03:34:53,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2913] [2024-11-28 03:34:53,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3006] [2024-11-28 03:34:53,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3356] [2024-11-28 03:34:53,730 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_5a4df368-caff-4687-910a-32a751ac4ca2/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-11-28 03:34:53,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:34:53,822 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:34:53,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53 WrapperNode [2024-11-28 03:34:53,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:34:53,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:34:53,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:34:53,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:34:53,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:53,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:53,948 INFO L138 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1132 [2024-11-28 03:34:53,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:34:53,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:34:53,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:34:53,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:34:53,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:53,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:53,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,034 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 03:34:54,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:34:54,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:34:54,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:34:54,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:34:54,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (1/1) ... [2024-11-28 03:34:54,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:34:54,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:54,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:34:54,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:34:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:34:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 03:34:54,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 03:34:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 03:34:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 03:34:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-28 03:34:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-28 03:34:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 03:34:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 03:34:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 03:34:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 03:34:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 03:34:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 03:34:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 03:34:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 03:34:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 03:34:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 03:34:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 03:34:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 03:34:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 03:34:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 03:34:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 03:34:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 03:34:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 03:34:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 03:34:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:34:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 03:34:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 03:34:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 03:34:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 03:34:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 03:34:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 03:34:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:34:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:34:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 03:34:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 03:34:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-28 03:34:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-28 03:34:54,526 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:34:54,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:34:56,376 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-28 03:34:56,377 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:34:56,409 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:34:56,410 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:34:56,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:34:56 BoogieIcfgContainer [2024-11-28 03:34:56,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:34:56,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:34:56,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:34:56,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:34:56,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:34:52" (1/3) ... [2024-11-28 03:34:56,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbcbd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:34:56, skipping insertion in model container [2024-11-28 03:34:56,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:34:53" (2/3) ... [2024-11-28 03:34:56,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbcbd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:34:56, skipping insertion in model container [2024-11-28 03:34:56,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:34:56" (3/3) ... [2024-11-28 03:34:56,422 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2024-11-28 03:34:56,442 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:34:56,446 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product20.cil.c that has 26 procedures, 568 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:34:56,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:34:56,591 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;@2ead71f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:34:56,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:34:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 465 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-28 03:34:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:34:56,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:56,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:56,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:56,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1227891952, now seen corresponding path program 1 times [2024-11-28 03:34:56,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:56,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87283302] [2024-11-28 03:34:56,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:56,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87283302] [2024-11-28 03:34:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87283302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:57,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:57,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:34:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160642569] [2024-11-28 03:34:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:57,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:34:57,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:57,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:34:57,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:34:57,624 INFO L87 Difference]: Start difference. First operand has 568 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 465 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:57,862 INFO L93 Difference]: Finished difference Result 1116 states and 1863 transitions. [2024-11-28 03:34:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:34:57,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-28 03:34:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:57,903 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 03:34:57,904 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 03:34:57,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:34:57,920 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 5 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:57,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2765 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 03:34:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 03:34:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.68348623853211) internal successors, (734), 457 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:34:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 927 transitions. [2024-11-28 03:34:58,044 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 927 transitions. Word has length 60 [2024-11-28 03:34:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:58,045 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 927 transitions. [2024-11-28 03:34:58,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 927 transitions. [2024-11-28 03:34:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:34:58,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:58,050 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:58,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:34:58,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:58,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1997288954, now seen corresponding path program 1 times [2024-11-28 03:34:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576421418] [2024-11-28 03:34:58,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576421418] [2024-11-28 03:34:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576421418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:58,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:58,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:34:58,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147000960] [2024-11-28 03:34:58,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:58,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:34:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:58,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:34:58,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:34:58,418 INFO L87 Difference]: Start difference. First operand 560 states and 927 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:58,574 INFO L93 Difference]: Finished difference Result 1102 states and 1831 transitions. [2024-11-28 03:34:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:34:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 03:34:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:58,589 INFO L225 Difference]: With dead ends: 1102 [2024-11-28 03:34:58,589 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 03:34:58,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:34:58,598 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 4 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:58,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2744 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:34:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 03:34:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 03:34:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6811926605504588) internal successors, (733), 457 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:34:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 926 transitions. [2024-11-28 03:34:58,686 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 926 transitions. Word has length 62 [2024-11-28 03:34:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:58,686 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 926 transitions. [2024-11-28 03:34:58,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 926 transitions. [2024-11-28 03:34:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:34:58,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:58,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:58,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:34:58,695 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:58,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1477257944, now seen corresponding path program 1 times [2024-11-28 03:34:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914699527] [2024-11-28 03:34:58,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914699527] [2024-11-28 03:34:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914699527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:34:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668022031] [2024-11-28 03:34:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:59,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:34:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:59,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:34:59,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:34:59,047 INFO L87 Difference]: Start difference. First operand 560 states and 926 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:59,191 INFO L93 Difference]: Finished difference Result 1102 states and 1830 transitions. [2024-11-28 03:34:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:34:59,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-28 03:34:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:59,204 INFO L225 Difference]: With dead ends: 1102 [2024-11-28 03:34:59,207 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 03:34:59,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:34:59,212 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 3 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:59,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2744 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:34:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 03:34:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 03:34:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6788990825688073) internal successors, (732), 457 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:34:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 925 transitions. [2024-11-28 03:34:59,276 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 925 transitions. Word has length 63 [2024-11-28 03:34:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:59,277 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 925 transitions. [2024-11-28 03:34:59,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 925 transitions. [2024-11-28 03:34:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:34:59,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:59,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:59,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:34:59,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:59,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1789838914, now seen corresponding path program 1 times [2024-11-28 03:34:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419316521] [2024-11-28 03:34:59,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:59,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419316521] [2024-11-28 03:34:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419316521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:34:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:34:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:34:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909839085] [2024-11-28 03:34:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:34:59,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:34:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:59,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:34:59,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:34:59,620 INFO L87 Difference]: Start difference. First operand 560 states and 925 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:59,707 INFO L93 Difference]: Finished difference Result 1102 states and 1829 transitions. [2024-11-28 03:34:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:34:59,707 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-28 03:34:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:59,715 INFO L225 Difference]: With dead ends: 1102 [2024-11-28 03:34:59,716 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 03:34:59,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:34:59,724 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 2 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:59,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2744 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:34:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 03:34:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 03:34:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.676605504587156) internal successors, (731), 457 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:34:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 924 transitions. [2024-11-28 03:34:59,779 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 924 transitions. Word has length 64 [2024-11-28 03:34:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:59,781 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 924 transitions. [2024-11-28 03:34:59,781 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:34:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 924 transitions. [2024-11-28 03:34:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 03:34:59,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:59,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:59,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:34:59,788 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:59,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -21663844, now seen corresponding path program 1 times [2024-11-28 03:34:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432909410] [2024-11-28 03:34:59,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432909410] [2024-11-28 03:35:00,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432909410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:00,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:00,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:35:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259487847] [2024-11-28 03:35:00,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:00,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:00,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:00,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:35:00,022 INFO L87 Difference]: Start difference. First operand 560 states and 924 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:00,096 INFO L93 Difference]: Finished difference Result 1102 states and 1828 transitions. [2024-11-28 03:35:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:35:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-28 03:35:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:00,105 INFO L225 Difference]: With dead ends: 1102 [2024-11-28 03:35:00,105 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 03:35:00,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:35:00,110 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 1 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:00,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2744 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 03:35:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 03:35:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6743119266055047) internal successors, (730), 457 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 923 transitions. [2024-11-28 03:35:00,159 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 923 transitions. Word has length 65 [2024-11-28 03:35:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:00,159 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 923 transitions. [2024-11-28 03:35:00,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 923 transitions. [2024-11-28 03:35:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:35:00,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:00,161 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:00,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:35:00,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:00,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1073848958, now seen corresponding path program 1 times [2024-11-28 03:35:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:00,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249710450] [2024-11-28 03:35:00,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249710450] [2024-11-28 03:35:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249710450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:00,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:00,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:35:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607857363] [2024-11-28 03:35:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:00,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:35:00,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:00,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:35:00,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:00,603 INFO L87 Difference]: Start difference. First operand 560 states and 923 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:00,861 INFO L93 Difference]: Finished difference Result 1068 states and 1760 transitions. [2024-11-28 03:35:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:35:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-28 03:35:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:00,871 INFO L225 Difference]: With dead ends: 1068 [2024-11-28 03:35:00,872 INFO L226 Difference]: Without dead ends: 575 [2024-11-28 03:35:00,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 03:35:00,878 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 91 mSDsluCounter, 6294 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7205 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:00,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7205 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-28 03:35:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2024-11-28 03:35:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 446 states have (on average 1.6704035874439462) internal successors, (745), 469 states have internal predecessors, (745), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2024-11-28 03:35:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 942 transitions. [2024-11-28 03:35:00,927 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 942 transitions. Word has length 66 [2024-11-28 03:35:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:00,928 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 942 transitions. [2024-11-28 03:35:00,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 942 transitions. [2024-11-28 03:35:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 03:35:00,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:00,931 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:00,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:35:00,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:00,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1081608317, now seen corresponding path program 1 times [2024-11-28 03:35:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:00,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070531337] [2024-11-28 03:35:00,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070531337] [2024-11-28 03:35:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070531337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:35:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427588949] [2024-11-28 03:35:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:01,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:01,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:01,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:35:01,116 INFO L87 Difference]: Start difference. First operand 573 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:01,186 INFO L93 Difference]: Finished difference Result 1120 states and 1854 transitions. [2024-11-28 03:35:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:35:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-28 03:35:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:01,197 INFO L225 Difference]: With dead ends: 1120 [2024-11-28 03:35:01,197 INFO L226 Difference]: Without dead ends: 554 [2024-11-28 03:35:01,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 03:35:01,202 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 0 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:01,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2746 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-28 03:35:01,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2024-11-28 03:35:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6651162790697673) internal successors, (716), 451 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 909 transitions. [2024-11-28 03:35:01,240 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 909 transitions. Word has length 66 [2024-11-28 03:35:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:01,241 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 909 transitions. [2024-11-28 03:35:01,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 909 transitions. [2024-11-28 03:35:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 03:35:01,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:01,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:01,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:35:01,243 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:01,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1929726011, now seen corresponding path program 1 times [2024-11-28 03:35:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:01,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91326897] [2024-11-28 03:35:01,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:01,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91326897] [2024-11-28 03:35:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91326897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:01,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085889895] [2024-11-28 03:35:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:01,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:01,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:01,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:01,481 INFO L87 Difference]: Start difference. First operand 554 states and 909 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:01,803 INFO L93 Difference]: Finished difference Result 1065 states and 1752 transitions. [2024-11-28 03:35:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-28 03:35:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:01,814 INFO L225 Difference]: With dead ends: 1065 [2024-11-28 03:35:01,814 INFO L226 Difference]: Without dead ends: 563 [2024-11-28 03:35:01,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:35:01,818 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 55 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:01,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4301 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-28 03:35:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-28 03:35:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.655813953488372) internal successors, (712), 451 states have internal predecessors, (712), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 905 transitions. [2024-11-28 03:35:01,855 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 905 transitions. Word has length 67 [2024-11-28 03:35:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:01,857 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 905 transitions. [2024-11-28 03:35:01,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 905 transitions. [2024-11-28 03:35:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:35:01,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:01,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:01,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:35:01,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:01,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1591889697, now seen corresponding path program 1 times [2024-11-28 03:35:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:01,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60515318] [2024-11-28 03:35:01,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60515318] [2024-11-28 03:35:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60515318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:02,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131019974] [2024-11-28 03:35:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:02,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:02,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:02,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:02,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:02,083 INFO L87 Difference]: Start difference. First operand 554 states and 905 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:02,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:02,387 INFO L93 Difference]: Finished difference Result 1065 states and 1748 transitions. [2024-11-28 03:35:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:02,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-28 03:35:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:02,394 INFO L225 Difference]: With dead ends: 1065 [2024-11-28 03:35:02,395 INFO L226 Difference]: Without dead ends: 563 [2024-11-28 03:35:02,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:35:02,399 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 54 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:02,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4301 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-28 03:35:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-28 03:35:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6465116279069767) internal successors, (708), 451 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 901 transitions. [2024-11-28 03:35:02,430 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 901 transitions. Word has length 68 [2024-11-28 03:35:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:02,431 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 901 transitions. [2024-11-28 03:35:02,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 901 transitions. [2024-11-28 03:35:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 03:35:02,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:02,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:02,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:35:02,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:02,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:02,438 INFO L85 PathProgramCache]: Analyzing trace with hash 911467680, now seen corresponding path program 1 times [2024-11-28 03:35:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:02,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486381288] [2024-11-28 03:35:02,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:02,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:02,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:02,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486381288] [2024-11-28 03:35:02,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486381288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:02,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:02,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:02,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366087250] [2024-11-28 03:35:02,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:02,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:02,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:02,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:02,678 INFO L87 Difference]: Start difference. First operand 554 states and 901 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:02,942 INFO L93 Difference]: Finished difference Result 1065 states and 1744 transitions. [2024-11-28 03:35:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-28 03:35:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:02,949 INFO L225 Difference]: With dead ends: 1065 [2024-11-28 03:35:02,949 INFO L226 Difference]: Without dead ends: 563 [2024-11-28 03:35:02,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:35:02,953 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 53 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:02,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4283 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-28 03:35:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-28 03:35:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6372093023255814) internal successors, (704), 451 states have internal predecessors, (704), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 897 transitions. [2024-11-28 03:35:02,984 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 897 transitions. Word has length 69 [2024-11-28 03:35:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:02,984 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 897 transitions. [2024-11-28 03:35:02,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 897 transitions. [2024-11-28 03:35:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 03:35:02,986 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:02,986 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:02,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:35:02,987 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:02,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1509296096, now seen corresponding path program 1 times [2024-11-28 03:35:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123716900] [2024-11-28 03:35:02,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:03,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:03,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123716900] [2024-11-28 03:35:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123716900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:03,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:03,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:35:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739891074] [2024-11-28 03:35:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:03,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:35:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:03,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:35:03,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:35:03,170 INFO L87 Difference]: Start difference. First operand 554 states and 897 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:03,284 INFO L93 Difference]: Finished difference Result 1056 states and 1726 transitions. [2024-11-28 03:35:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:35:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-28 03:35:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:03,292 INFO L225 Difference]: With dead ends: 1056 [2024-11-28 03:35:03,292 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 03:35:03,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 03:35:03,296 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 84 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:03,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5243 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 03:35:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-28 03:35:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6381418092909537) internal successors, (670), 430 states have internal predecessors, (670), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 863 transitions. [2024-11-28 03:35:03,328 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 863 transitions. Word has length 69 [2024-11-28 03:35:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:03,328 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 863 transitions. [2024-11-28 03:35:03,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 863 transitions. [2024-11-28 03:35:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:35:03,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:03,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:03,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:35:03,330 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:03,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1826501274, now seen corresponding path program 1 times [2024-11-28 03:35:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455791541] [2024-11-28 03:35:03,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:03,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455791541] [2024-11-28 03:35:03,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455791541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:03,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610385756] [2024-11-28 03:35:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:03,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:03,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:03,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:03,512 INFO L87 Difference]: Start difference. First operand 533 states and 863 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:03,664 INFO L93 Difference]: Finished difference Result 1035 states and 1692 transitions. [2024-11-28 03:35:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-28 03:35:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:03,671 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 03:35:03,671 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 03:35:03,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:35:03,675 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 17 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:03,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4221 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 03:35:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-28 03:35:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6356968215158925) internal successors, (669), 430 states have internal predecessors, (669), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 862 transitions. [2024-11-28 03:35:03,708 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 862 transitions. Word has length 70 [2024-11-28 03:35:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:03,708 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 862 transitions. [2024-11-28 03:35:03,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 862 transitions. [2024-11-28 03:35:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 03:35:03,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:03,711 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:35:03,711 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:03,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 748137851, now seen corresponding path program 1 times [2024-11-28 03:35:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766557860] [2024-11-28 03:35:03,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766557860] [2024-11-28 03:35:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766557860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233780759] [2024-11-28 03:35:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:03,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:03,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:03,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:03,948 INFO L87 Difference]: Start difference. First operand 533 states and 862 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:04,087 INFO L93 Difference]: Finished difference Result 1035 states and 1691 transitions. [2024-11-28 03:35:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-28 03:35:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:04,096 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 03:35:04,096 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 03:35:04,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:35:04,101 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 16 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:04,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4221 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 03:35:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-28 03:35:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6332518337408313) internal successors, (668), 430 states have internal predecessors, (668), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 861 transitions. [2024-11-28 03:35:04,140 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 861 transitions. Word has length 71 [2024-11-28 03:35:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:04,140 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 861 transitions. [2024-11-28 03:35:04,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:35:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 861 transitions. [2024-11-28 03:35:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:35:04,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:04,143 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:04,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:35:04,143 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:04,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:04,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1995990955, now seen corresponding path program 1 times [2024-11-28 03:35:04,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715094731] [2024-11-28 03:35:04,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:04,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:04,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715094731] [2024-11-28 03:35:04,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715094731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:04,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:35:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102410385] [2024-11-28 03:35:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:04,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:35:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:04,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:35:04,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:04,466 INFO L87 Difference]: Start difference. First operand 533 states and 861 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:04,641 INFO L93 Difference]: Finished difference Result 1029 states and 1679 transitions. [2024-11-28 03:35:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:35:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-28 03:35:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:04,648 INFO L225 Difference]: With dead ends: 1029 [2024-11-28 03:35:04,649 INFO L226 Difference]: Without dead ends: 533 [2024-11-28 03:35:04,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:04,653 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 6 mSDsluCounter, 6738 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7583 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:04,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7583 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-28 03:35:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-28 03:35:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.63080684596577) internal successors, (667), 430 states have internal predecessors, (667), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 03:35:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 860 transitions. [2024-11-28 03:35:04,681 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 860 transitions. Word has length 72 [2024-11-28 03:35:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:04,682 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 860 transitions. [2024-11-28 03:35:04,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:35:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 860 transitions. [2024-11-28 03:35:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 03:35:04,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:04,684 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:04,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:35:04,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:04,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1254124666, now seen corresponding path program 1 times [2024-11-28 03:35:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082199760] [2024-11-28 03:35:04,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082199760] [2024-11-28 03:35:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082199760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:35:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111736913] [2024-11-28 03:35:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:05,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:05,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:05,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:35:05,103 INFO L87 Difference]: Start difference. First operand 533 states and 860 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 03:35:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:08,700 INFO L93 Difference]: Finished difference Result 1657 states and 2737 transitions. [2024-11-28 03:35:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 73 [2024-11-28 03:35:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:08,717 INFO L225 Difference]: With dead ends: 1657 [2024-11-28 03:35:08,717 INFO L226 Difference]: Without dead ends: 1169 [2024-11-28 03:35:08,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:35:08,724 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1976 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:08,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 1129 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 03:35:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-28 03:35:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1047. [2024-11-28 03:35:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 810 states have (on average 1.651851851851852) internal successors, (1338), 840 states have internal predecessors, (1338), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2024-11-28 03:35:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1724 transitions. [2024-11-28 03:35:08,825 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1724 transitions. Word has length 73 [2024-11-28 03:35:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:08,826 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1724 transitions. [2024-11-28 03:35:08,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 03:35:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1724 transitions. [2024-11-28 03:35:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:35:08,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:08,835 INFO L218 NwaCegarLoop]: trace histogram [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 03:35:08,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:35:08,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:08,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -802970203, now seen corresponding path program 1 times [2024-11-28 03:35:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941122468] [2024-11-28 03:35:08,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:35:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941122468] [2024-11-28 03:35:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941122468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:35:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247357447] [2024-11-28 03:35:09,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:09,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:35:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:09,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:35:09,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:35:09,393 INFO L87 Difference]: Start difference. First operand 1047 states and 1724 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 03:35:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:17,375 INFO L93 Difference]: Finished difference Result 3836 states and 6335 transitions. [2024-11-28 03:35:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:35:17,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2024-11-28 03:35:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:17,399 INFO L225 Difference]: With dead ends: 3836 [2024-11-28 03:35:17,399 INFO L226 Difference]: Without dead ends: 2834 [2024-11-28 03:35:17,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:35:17,408 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 2789 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 9505 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 10431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 9505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:17,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2867 Valid, 4550 Invalid, 10431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [926 Valid, 9505 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-28 03:35:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2024-11-28 03:35:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2740. [2024-11-28 03:35:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2047 states have (on average 1.617000488519785) internal successors, (3310), 2123 states have internal predecessors, (3310), 574 states have call successors, (574), 101 states have call predecessors, (574), 118 states have return successors, (607), 548 states have call predecessors, (607), 569 states have call successors, (607) [2024-11-28 03:35:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4491 transitions. [2024-11-28 03:35:17,686 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4491 transitions. Word has length 125 [2024-11-28 03:35:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:17,686 INFO L471 AbstractCegarLoop]: Abstraction has 2740 states and 4491 transitions. [2024-11-28 03:35:17,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 03:35:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4491 transitions. [2024-11-28 03:35:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 03:35:17,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:17,692 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:35:17,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:35:17,693 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:17,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:17,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1792487003, now seen corresponding path program 1 times [2024-11-28 03:35:17,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:17,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378497717] [2024-11-28 03:35:17,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:17,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378497717] [2024-11-28 03:35:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378497717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229285120] [2024-11-28 03:35:17,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:17,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:17,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:17,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:35:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:18,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:18,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:18,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:18,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229285120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:18,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 03:35:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456907169] [2024-11-28 03:35:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:18,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:35:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:18,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:35:18,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:18,649 INFO L87 Difference]: Start difference. First operand 2740 states and 4491 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:19,654 INFO L93 Difference]: Finished difference Result 5499 states and 9186 transitions. [2024-11-28 03:35:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2024-11-28 03:35:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:19,678 INFO L225 Difference]: With dead ends: 5499 [2024-11-28 03:35:19,678 INFO L226 Difference]: Without dead ends: 2804 [2024-11-28 03:35:19,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:19,698 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 811 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:19,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2146 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:35:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2024-11-28 03:35:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2804. [2024-11-28 03:35:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2103 states have (on average 1.619591060389919) internal successors, (3406), 2179 states have internal predecessors, (3406), 574 states have call successors, (574), 109 states have call predecessors, (574), 126 states have return successors, (613), 548 states have call predecessors, (613), 569 states have call successors, (613) [2024-11-28 03:35:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4593 transitions. [2024-11-28 03:35:19,958 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4593 transitions. Word has length 126 [2024-11-28 03:35:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:19,958 INFO L471 AbstractCegarLoop]: Abstraction has 2804 states and 4593 transitions. [2024-11-28 03:35:19,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:19,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4593 transitions. [2024-11-28 03:35:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 03:35:19,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:19,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:19,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:35:20,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:20,173 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:20,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2124483265, now seen corresponding path program 1 times [2024-11-28 03:35:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:20,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555182127] [2024-11-28 03:35:20,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555182127] [2024-11-28 03:35:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555182127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105462007] [2024-11-28 03:35:20,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:20,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:20,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:20,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:35:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:20,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:20,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:21,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105462007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:21,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 03:35:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756336295] [2024-11-28 03:35:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:21,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:35:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:21,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:35:21,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:21,166 INFO L87 Difference]: Start difference. First operand 2804 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:22,117 INFO L93 Difference]: Finished difference Result 5627 states and 9372 transitions. [2024-11-28 03:35:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-28 03:35:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:22,146 INFO L225 Difference]: With dead ends: 5627 [2024-11-28 03:35:22,146 INFO L226 Difference]: Without dead ends: 2868 [2024-11-28 03:35:22,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:22,169 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 808 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:22,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2143 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:35:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-11-28 03:35:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2868. [2024-11-28 03:35:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2159 states have (on average 1.6220472440944882) internal successors, (3502), 2235 states have internal predecessors, (3502), 574 states have call successors, (574), 117 states have call predecessors, (574), 134 states have return successors, (619), 548 states have call predecessors, (619), 569 states have call successors, (619) [2024-11-28 03:35:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 4695 transitions. [2024-11-28 03:35:22,413 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 4695 transitions. Word has length 128 [2024-11-28 03:35:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:22,414 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 4695 transitions. [2024-11-28 03:35:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 4695 transitions. [2024-11-28 03:35:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 03:35:22,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:22,420 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:22,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:35:22,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:35:22,625 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:22,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1472232283, now seen corresponding path program 1 times [2024-11-28 03:35:22,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:22,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145179355] [2024-11-28 03:35:22,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:22,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145179355] [2024-11-28 03:35:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145179355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738641547] [2024-11-28 03:35:22,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:22,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:22,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:35:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:23,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:23,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:23,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738641547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 03:35:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840357215] [2024-11-28 03:35:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:23,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:35:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:23,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:35:23,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:23,689 INFO L87 Difference]: Start difference. First operand 2868 states and 4695 transitions. Second operand has 5 states, 5 states have (on average 19.0) 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:24,627 INFO L93 Difference]: Finished difference Result 5755 states and 9558 transitions. [2024-11-28 03:35:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-28 03:35:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:24,654 INFO L225 Difference]: With dead ends: 5755 [2024-11-28 03:35:24,654 INFO L226 Difference]: Without dead ends: 2932 [2024-11-28 03:35:24,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:24,674 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 800 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:24,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2140 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:35:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2024-11-28 03:35:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2932. [2024-11-28 03:35:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2215 states have (on average 1.6243792325056434) internal successors, (3598), 2291 states have internal predecessors, (3598), 574 states have call successors, (574), 125 states have call predecessors, (574), 142 states have return successors, (625), 548 states have call predecessors, (625), 569 states have call successors, (625) [2024-11-28 03:35:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 4797 transitions. [2024-11-28 03:35:24,904 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 4797 transitions. Word has length 130 [2024-11-28 03:35:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:24,906 INFO L471 AbstractCegarLoop]: Abstraction has 2932 states and 4797 transitions. [2024-11-28 03:35:24,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) 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, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 4797 transitions. [2024-11-28 03:35:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 03:35:24,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:24,914 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] [2024-11-28 03:35:24,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:35:25,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:25,118 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:25,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 150547271, now seen corresponding path program 1 times [2024-11-28 03:35:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:25,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699194678] [2024-11-28 03:35:25,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:25,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699194678] [2024-11-28 03:35:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699194678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099092688] [2024-11-28 03:35:25,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:25,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:25,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:25,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:35:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:25,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:25,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:35:25,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099092688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:25,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:25,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 03:35:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122621854] [2024-11-28 03:35:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:25,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:35:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:25,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:35:25,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:25,987 INFO L87 Difference]: Start difference. First operand 2932 states and 4797 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:26,730 INFO L93 Difference]: Finished difference Result 5883 states and 9744 transitions. [2024-11-28 03:35:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:26,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-28 03:35:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:26,753 INFO L225 Difference]: With dead ends: 5883 [2024-11-28 03:35:26,753 INFO L226 Difference]: Without dead ends: 2996 [2024-11-28 03:35:26,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:26,767 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 795 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:26,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 2137 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:35:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2024-11-28 03:35:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2996. [2024-11-28 03:35:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2271 states have (on average 1.6265962131219727) internal successors, (3694), 2347 states have internal predecessors, (3694), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-28 03:35:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4899 transitions. [2024-11-28 03:35:26,996 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4899 transitions. Word has length 132 [2024-11-28 03:35:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 2996 states and 4899 transitions. [2024-11-28 03:35:26,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4899 transitions. [2024-11-28 03:35:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 03:35:27,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:27,002 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] [2024-11-28 03:35:27,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:35:27,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:27,203 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:27,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash -815404635, now seen corresponding path program 1 times [2024-11-28 03:35:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:27,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534309315] [2024-11-28 03:35:27,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:35:27,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534309315] [2024-11-28 03:35:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534309315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700276001] [2024-11-28 03:35:27,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:27,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:27,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:35:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:28,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:28,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:35:28,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700276001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-28 03:35:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120857968] [2024-11-28 03:35:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:28,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:35:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:28,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:35:28,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:35:28,340 INFO L87 Difference]: Start difference. First operand 2996 states and 4899 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:35:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:29,117 INFO L93 Difference]: Finished difference Result 3108 states and 5084 transitions. [2024-11-28 03:35:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:35:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 134 [2024-11-28 03:35:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:29,146 INFO L225 Difference]: With dead ends: 3108 [2024-11-28 03:35:29,147 INFO L226 Difference]: Without dead ends: 3093 [2024-11-28 03:35:29,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:35:29,151 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 826 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:29,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2170 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:35:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2024-11-28 03:35:29,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3002. [2024-11-28 03:35:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2277 states have (on average 1.6249451032059727) internal successors, (3700), 2353 states have internal predecessors, (3700), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-28 03:35:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4905 transitions. [2024-11-28 03:35:29,349 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4905 transitions. Word has length 134 [2024-11-28 03:35:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:29,349 INFO L471 AbstractCegarLoop]: Abstraction has 3002 states and 4905 transitions. [2024-11-28 03:35:29,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:35:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4905 transitions. [2024-11-28 03:35:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:35:29,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:29,355 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, 1, 1, 1, 1] [2024-11-28 03:35:29,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:35:29,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:29,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:29,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1164615776, now seen corresponding path program 1 times [2024-11-28 03:35:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:29,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573101163] [2024-11-28 03:35:29,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:35:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573101163] [2024-11-28 03:35:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573101163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056663826] [2024-11-28 03:35:30,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:30,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:30,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:30,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:35:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:30,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:35:30,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:35:30,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056663826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:30,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-28 03:35:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512689151] [2024-11-28 03:35:30,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:30,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:35:30,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:30,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:35:30,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:35:30,694 INFO L87 Difference]: Start difference. First operand 3002 states and 4905 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:31,396 INFO L93 Difference]: Finished difference Result 3206 states and 5205 transitions. [2024-11-28 03:35:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:35:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-28 03:35:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:31,426 INFO L225 Difference]: With dead ends: 3206 [2024-11-28 03:35:31,427 INFO L226 Difference]: Without dead ends: 3191 [2024-11-28 03:35:31,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:35:31,432 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 788 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:31,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 3371 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:35:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2024-11-28 03:35:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3170. [2024-11-28 03:35:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 2413 states have (on average 1.6195607128056362) internal successors, (3908), 2489 states have internal predecessors, (3908), 590 states have call successors, (590), 149 states have call predecessors, (590), 166 states have return successors, (657), 564 states have call predecessors, (657), 585 states have call successors, (657) [2024-11-28 03:35:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 5155 transitions. [2024-11-28 03:35:31,637 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 5155 transitions. Word has length 140 [2024-11-28 03:35:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:31,637 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 5155 transitions. [2024-11-28 03:35:31,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:35:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 5155 transitions. [2024-11-28 03:35:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 03:35:31,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:31,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:31,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:31,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:31,846 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:31,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash 850601932, now seen corresponding path program 1 times [2024-11-28 03:35:31,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:31,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613696760] [2024-11-28 03:35:31,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:35:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613696760] [2024-11-28 03:35:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613696760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857002295] [2024-11-28 03:35:32,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:32,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:32,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:32,295 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:32,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:35:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:32,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:35:32,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:35:32,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:32,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857002295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:32,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:32,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 03:35:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364703435] [2024-11-28 03:35:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:32,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:35:32,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:32,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:35:32,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:35:32,905 INFO L87 Difference]: Start difference. First operand 3170 states and 5155 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 03:35:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:37,028 INFO L93 Difference]: Finished difference Result 11314 states and 18683 transitions. [2024-11-28 03:35:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:35:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 151 [2024-11-28 03:35:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:37,096 INFO L225 Difference]: With dead ends: 11314 [2024-11-28 03:35:37,096 INFO L226 Difference]: Without dead ends: 8195 [2024-11-28 03:35:37,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:35:37,118 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 2338 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:37,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2729 Invalid, 5198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 03:35:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8195 states. [2024-11-28 03:35:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8195 to 7708. [2024-11-28 03:35:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 5909 states have (on average 1.6283635132848198) internal successors, (9622), 6094 states have internal predecessors, (9622), 1362 states have call successors, (1362), 353 states have call predecessors, (1362), 436 states have return successors, (1641), 1326 states have call predecessors, (1641), 1357 states have call successors, (1641) [2024-11-28 03:35:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 12625 transitions. [2024-11-28 03:35:37,725 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 12625 transitions. Word has length 151 [2024-11-28 03:35:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:37,725 INFO L471 AbstractCegarLoop]: Abstraction has 7708 states and 12625 transitions. [2024-11-28 03:35:37,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 03:35:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 12625 transitions. [2024-11-28 03:35:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:35:37,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:37,733 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:37,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:35:37,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:37,939 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:37,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1190868620, now seen corresponding path program 1 times [2024-11-28 03:35:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000596503] [2024-11-28 03:35:37,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:35:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000596503] [2024-11-28 03:35:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000596503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834238710] [2024-11-28 03:35:38,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:38,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:38,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:35:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:38,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:35:38,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:35:39,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834238710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-28 03:35:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265124987] [2024-11-28 03:35:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:39,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:35:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:39,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:35:39,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:35:39,120 INFO L87 Difference]: Start difference. First operand 7708 states and 12625 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:35:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:42,279 INFO L93 Difference]: Finished difference Result 16752 states and 27628 transitions. [2024-11-28 03:35:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:35:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2024-11-28 03:35:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:42,354 INFO L225 Difference]: With dead ends: 16752 [2024-11-28 03:35:42,354 INFO L226 Difference]: Without dead ends: 9095 [2024-11-28 03:35:42,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:35:42,391 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 2084 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:42,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 2179 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:35:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2024-11-28 03:35:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 8146. [2024-11-28 03:35:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8146 states, 6227 states have (on average 1.6155452063594027) internal successors, (10060), 6448 states have internal predecessors, (10060), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 508 states have return successors, (1805), 1380 states have call predecessors, (1805), 1405 states have call successors, (1805) [2024-11-28 03:35:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8146 states to 8146 states and 13275 transitions. [2024-11-28 03:35:43,231 INFO L78 Accepts]: Start accepts. Automaton has 8146 states and 13275 transitions. Word has length 153 [2024-11-28 03:35:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:43,232 INFO L471 AbstractCegarLoop]: Abstraction has 8146 states and 13275 transitions. [2024-11-28 03:35:43,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 03:35:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8146 states and 13275 transitions. [2024-11-28 03:35:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:35:43,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:43,239 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:43,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:43,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:43,443 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:43,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1361141167, now seen corresponding path program 1 times [2024-11-28 03:35:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949746318] [2024-11-28 03:35:43,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:35:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949746318] [2024-11-28 03:35:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949746318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883492478] [2024-11-28 03:35:43,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:43,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:43,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:43,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:35:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:44,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:35:44,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:35:44,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883492478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-28 03:35:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143036550] [2024-11-28 03:35:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:44,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:35:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:44,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:35:44,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:35:44,400 INFO L87 Difference]: Start difference. First operand 8146 states and 13275 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:35:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:44,955 INFO L93 Difference]: Finished difference Result 20485 states and 33791 transitions. [2024-11-28 03:35:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:35:44,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-28 03:35:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:45,107 INFO L225 Difference]: With dead ends: 20485 [2024-11-28 03:35:45,107 INFO L226 Difference]: Without dead ends: 12393 [2024-11-28 03:35:45,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:35:45,134 INFO L435 NwaCegarLoop]: 1531 mSDtfsCounter, 801 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:45,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2382 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2024-11-28 03:35:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 8122. [2024-11-28 03:35:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8122 states, 6215 states have (on average 1.6148028962188254) internal successors, (10036), 6424 states have internal predecessors, (10036), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 496 states have return successors, (1751), 1380 states have call predecessors, (1751), 1405 states have call successors, (1751) [2024-11-28 03:35:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8122 states to 8122 states and 13197 transitions. [2024-11-28 03:35:45,742 INFO L78 Accepts]: Start accepts. Automaton has 8122 states and 13197 transitions. Word has length 158 [2024-11-28 03:35:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:45,743 INFO L471 AbstractCegarLoop]: Abstraction has 8122 states and 13197 transitions. [2024-11-28 03:35:45,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:35:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8122 states and 13197 transitions. [2024-11-28 03:35:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:35:45,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:45,749 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:45,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:35:45,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:35:45,950 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:45,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash -467654829, now seen corresponding path program 1 times [2024-11-28 03:35:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626982101] [2024-11-28 03:35:45,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:35:46,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626982101] [2024-11-28 03:35:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626982101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272353615] [2024-11-28 03:35:46,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:46,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:46,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:46,403 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:46,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:35:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:46,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:35:46,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:35:46,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272353615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:46,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 03:35:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797900944] [2024-11-28 03:35:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:46,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:46,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:46,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:46,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:35:46,932 INFO L87 Difference]: Start difference. First operand 8122 states and 13197 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:35:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:49,626 INFO L93 Difference]: Finished difference Result 21692 states and 35866 transitions. [2024-11-28 03:35:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:35:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2024-11-28 03:35:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:49,743 INFO L225 Difference]: With dead ends: 21692 [2024-11-28 03:35:49,744 INFO L226 Difference]: Without dead ends: 13615 [2024-11-28 03:35:49,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:35:49,801 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1877 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:49,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 938 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:35:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2024-11-28 03:35:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 13025. [2024-11-28 03:35:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 9851 states have (on average 1.6045071566338442) internal successors, (15806), 10231 states have internal predecessors, (15806), 2370 states have call successors, (2370), 596 states have call predecessors, (2370), 803 states have return successors, (3185), 2359 states have call predecessors, (3185), 2365 states have call successors, (3185) [2024-11-28 03:35:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 21361 transitions. [2024-11-28 03:35:51,005 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 21361 transitions. Word has length 158 [2024-11-28 03:35:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:51,007 INFO L471 AbstractCegarLoop]: Abstraction has 13025 states and 21361 transitions. [2024-11-28 03:35:51,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:35:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 21361 transitions. [2024-11-28 03:35:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:35:51,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:51,016 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:51,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:35:51,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:35:51,218 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:51,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1612678771, now seen corresponding path program 1 times [2024-11-28 03:35:51,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:51,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365988859] [2024-11-28 03:35:51,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:51,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:35:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365988859] [2024-11-28 03:35:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365988859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566245735] [2024-11-28 03:35:51,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:51,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:51,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:35:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:52,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:35:52,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:35:52,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566245735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 03:35:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020461092] [2024-11-28 03:35:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:52,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:52,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:52,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:35:52,257 INFO L87 Difference]: Start difference. First operand 13025 states and 21361 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:35:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:55,231 INFO L93 Difference]: Finished difference Result 37853 states and 64194 transitions. [2024-11-28 03:35:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:35:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2024-11-28 03:35:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:55,419 INFO L225 Difference]: With dead ends: 37853 [2024-11-28 03:35:55,419 INFO L226 Difference]: Without dead ends: 24873 [2024-11-28 03:35:55,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:35:55,500 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 1880 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:55,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 909 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:35:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24873 states. [2024-11-28 03:35:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24873 to 23814. [2024-11-28 03:35:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23814 states, 17708 states have (on average 1.5937429410435962) internal successors, (28222), 18502 states have internal predecessors, (28222), 4646 states have call successors, (4646), 1022 states have call predecessors, (4646), 1459 states have return successors, (7091), 4697 states have call predecessors, (7091), 4641 states have call successors, (7091) [2024-11-28 03:35:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23814 states to 23814 states and 39959 transitions. [2024-11-28 03:35:57,862 INFO L78 Accepts]: Start accepts. Automaton has 23814 states and 39959 transitions. Word has length 159 [2024-11-28 03:35:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:57,863 INFO L471 AbstractCegarLoop]: Abstraction has 23814 states and 39959 transitions. [2024-11-28 03:35:57,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:35:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23814 states and 39959 transitions. [2024-11-28 03:35:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:35:57,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:57,875 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:57,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:35:58,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:35:58,080 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:58,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1546288597, now seen corresponding path program 1 times [2024-11-28 03:35:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:58,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503253253] [2024-11-28 03:35:58,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:35:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503253253] [2024-11-28 03:35:58,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503253253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512896089] [2024-11-28 03:35:58,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:58,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:58,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:59,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:35:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:59,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:35:59,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:35:59,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:35:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512896089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:35:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 03:35:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775015434] [2024-11-28 03:35:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:59,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:35:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:59,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:35:59,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:35:59,946 INFO L87 Difference]: Start difference. First operand 23814 states and 39959 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:36:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:04,873 INFO L93 Difference]: Finished difference Result 73815 states and 131287 transitions. [2024-11-28 03:36:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:36:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-11-28 03:36:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:05,291 INFO L225 Difference]: With dead ends: 73815 [2024-11-28 03:36:05,292 INFO L226 Difference]: Without dead ends: 50046 [2024-11-28 03:36:05,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:36:05,438 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 1867 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:05,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 905 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:36:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50046 states. [2024-11-28 03:36:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50046 to 48014. [2024-11-28 03:36:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48014 states, 34975 states have (on average 1.5825589706933525) internal successors, (55350), 36783 states have internal predecessors, (55350), 10159 states have call successors, (10159), 1874 states have call predecessors, (10159), 2879 states have return successors, (18318), 10406 states have call predecessors, (18318), 10154 states have call successors, (18318) [2024-11-28 03:36:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48014 states to 48014 states and 83827 transitions. [2024-11-28 03:36:10,102 INFO L78 Accepts]: Start accepts. Automaton has 48014 states and 83827 transitions. Word has length 160 [2024-11-28 03:36:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:10,102 INFO L471 AbstractCegarLoop]: Abstraction has 48014 states and 83827 transitions. [2024-11-28 03:36:10,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:36:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 48014 states and 83827 transitions. [2024-11-28 03:36:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:36:10,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:10,109 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:10,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:36:10,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:36:10,310 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:10,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 690033103, now seen corresponding path program 1 times [2024-11-28 03:36:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637706482] [2024-11-28 03:36:10,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:36:10,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637706482] [2024-11-28 03:36:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637706482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400619225] [2024-11-28 03:36:10,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:10,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:10,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:10,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a4df368-caff-4687-910a-32a751ac4ca2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:36:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:11,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:36:11,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:36:11,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:36:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400619225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:36:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 03:36:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667604534] [2024-11-28 03:36:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:11,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:36:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:11,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:36:11,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:36:11,257 INFO L87 Difference]: Start difference. First operand 48014 states and 83827 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:36:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:20,631 INFO L93 Difference]: Finished difference Result 155496 states and 299028 transitions. [2024-11-28 03:36:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:36:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2024-11-28 03:36:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:21,819 INFO L225 Difference]: With dead ends: 155496 [2024-11-28 03:36:21,820 INFO L226 Difference]: Without dead ends: 107527 [2024-11-28 03:36:22,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:36:22,147 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1854 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:22,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 904 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:36:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107527 states.