./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.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_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1 --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 323b2112d56f35ec9fc5a7837411d8e54d2d46e3d8981d77e080eaf0dd99497b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:16:21,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:16:21,828 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:16:21,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:16:21,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:16:21,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:16:21,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:16:21,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:16:21,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:16:21,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:16:21,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:16:21,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:16:21,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:16:21,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:16:21,855 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:16:21,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:16:21,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:16:21,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:16:21,857 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:21,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:21,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:21,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:16:21,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:16:21,858 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_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1 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 -> 323b2112d56f35ec9fc5a7837411d8e54d2d46e3d8981d77e080eaf0dd99497b [2024-12-01 13:16:22,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:16:22,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:16:22,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:16:22,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:16:22,093 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:16:22,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2024-12-01 13:16:24,785 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/data/d02a6c1b2/2ba8bc18e9d84b52ae075ce96ded749d/FLAG46df8782e [2024-12-01 13:16:25,008 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:16:25,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c [2024-12-01 13:16:25,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/data/d02a6c1b2/2ba8bc18e9d84b52ae075ce96ded749d/FLAG46df8782e [2024-12-01 13:16:25,035 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/data/d02a6c1b2/2ba8bc18e9d84b52ae075ce96ded749d [2024-12-01 13:16:25,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:16:25,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:16:25,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:25,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:16:25,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:16:25,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2fc9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25, skipping insertion in model container [2024-12-01 13:16:25,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:16:25,297 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_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c[9626,9639] [2024-12-01 13:16:25,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:25,368 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:16:25,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] [2024-12-01 13:16:25,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [101] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [176] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [450] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [553] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [653] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [662] [2024-12-01 13:16:25,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [697] [2024-12-01 13:16:25,407 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_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/sv-benchmarks/c/product-lines/minepump_spec5_product64.cil.c[9626,9639] [2024-12-01 13:16:25,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:25,460 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:16:25,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25 WrapperNode [2024-12-01 13:16:25,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:25,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:25,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:16:25,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:16:25,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,503 INFO L138 Inliner]: procedures = 61, calls = 110, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 248 [2024-12-01 13:16:25,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:25,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:16:25,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:16:25,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:16:25,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,533 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-01 13:16:25,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:16:25,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:16:25,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:16:25,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:16:25,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:25,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:25,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:16:25,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:16:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:16:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-12-01 13:16:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-12-01 13:16:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 13:16:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 13:16:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 13:16:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 13:16:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-12-01 13:16:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-12-01 13:16:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:16:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:16:25,682 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:16:25,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:16:25,935 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-12-01 13:16:25,935 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:16:25,947 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:16:25,947 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-01 13:16:25,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:25 BoogieIcfgContainer [2024-12-01 13:16:25,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:16:25,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:16:25,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:16:25,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:16:25,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:16:25" (1/3) ... [2024-12-01 13:16:25,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2201bf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:25, skipping insertion in model container [2024-12-01 13:16:25,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (2/3) ... [2024-12-01 13:16:25,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2201bf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:25, skipping insertion in model container [2024-12-01 13:16:25,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:25" (3/3) ... [2024-12-01 13:16:25,957 INFO L128 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2024-12-01 13:16:25,972 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:16:25,974 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product64.cil.c that has 11 procedures, 116 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-01 13:16:26,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:16:26,036 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;@2e175e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:16:26,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:16:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 96 states have internal predecessors, (116), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-01 13:16:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-01 13:16:26,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:26,049 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:26,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:26,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1215646702, now seen corresponding path program 1 times [2024-12-01 13:16:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:26,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263141630] [2024-12-01 13:16:26,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:26,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263141630] [2024-12-01 13:16:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263141630] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:26,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:26,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:16:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528020936] [2024-12-01 13:16:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:26,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:16:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:26,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:16:26,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:16:26,239 INFO L87 Difference]: Start difference. First operand has 116 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 96 states have internal predecessors, (116), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 13:16:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:26,265 INFO L93 Difference]: Finished difference Result 223 states and 302 transitions. [2024-12-01 13:16:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:16:26,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-12-01 13:16:26,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:26,274 INFO L225 Difference]: With dead ends: 223 [2024-12-01 13:16:26,274 INFO L226 Difference]: Without dead ends: 107 [2024-12-01 13:16:26,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:16:26,280 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:26,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-12-01 13:16:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-12-01 13:16:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 88 states have internal predecessors, (102), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-01 13:16:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2024-12-01 13:16:26,314 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 32 [2024-12-01 13:16:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:26,314 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2024-12-01 13:16:26,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 13:16:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2024-12-01 13:16:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-01 13:16:26,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:26,316 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:26,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 13:16:26,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:26,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash 813606184, now seen corresponding path program 1 times [2024-12-01 13:16:26,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:26,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143006057] [2024-12-01 13:16:26,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143006057] [2024-12-01 13:16:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143006057] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:26,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857397173] [2024-12-01 13:16:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:26,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:26,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:26,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:26,421 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 13:16:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:26,443 INFO L93 Difference]: Finished difference Result 176 states and 228 transitions. [2024-12-01 13:16:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-12-01 13:16:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:26,445 INFO L225 Difference]: With dead ends: 176 [2024-12-01 13:16:26,445 INFO L226 Difference]: Without dead ends: 99 [2024-12-01 13:16:26,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:26,447 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 17 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:26,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 233 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-01 13:16:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-01 13:16:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 83 states have internal predecessors, (96), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:16:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2024-12-01 13:16:26,458 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 32 [2024-12-01 13:16:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:26,459 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2024-12-01 13:16:26,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 13:16:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2024-12-01 13:16:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 13:16:26,460 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:26,460 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:26,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 13:16:26,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:26,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -338788852, now seen corresponding path program 1 times [2024-12-01 13:16:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479930343] [2024-12-01 13:16:26,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479930343] [2024-12-01 13:16:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479930343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422039553] [2024-12-01 13:16:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:26,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:26,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:26,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:26,601 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 13:16:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:26,854 INFO L93 Difference]: Finished difference Result 325 states and 428 transitions. [2024-12-01 13:16:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-12-01 13:16:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:26,857 INFO L225 Difference]: With dead ends: 325 [2024-12-01 13:16:26,857 INFO L226 Difference]: Without dead ends: 234 [2024-12-01 13:16:26,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:26,859 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 221 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:26,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 531 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:16:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-12-01 13:16:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2024-12-01 13:16:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 166 states have (on average 1.3433734939759037) internal successors, (223), 188 states have internal predecessors, (223), 38 states have call successors, (38), 23 states have call predecessors, (38), 23 states have return successors, (39), 26 states have call predecessors, (39), 38 states have call successors, (39) [2024-12-01 13:16:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 300 transitions. [2024-12-01 13:16:26,891 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 300 transitions. Word has length 37 [2024-12-01 13:16:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:26,891 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 300 transitions. [2024-12-01 13:16:26,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 13:16:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 300 transitions. [2024-12-01 13:16:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-01 13:16:26,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:26,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:26,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 13:16:26,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:26,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1994329065, now seen corresponding path program 1 times [2024-12-01 13:16:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976638470] [2024-12-01 13:16:26,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 13:16:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976638470] [2024-12-01 13:16:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976638470] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800635705] [2024-12-01 13:16:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:27,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:27,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:27,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:27,007 INFO L87 Difference]: Start difference. First operand 228 states and 300 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 13:16:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:27,162 INFO L93 Difference]: Finished difference Result 548 states and 735 transitions. [2024-12-01 13:16:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:16:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-12-01 13:16:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:27,165 INFO L225 Difference]: With dead ends: 548 [2024-12-01 13:16:27,165 INFO L226 Difference]: Without dead ends: 328 [2024-12-01 13:16:27,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:27,167 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 87 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:27,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 531 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-12-01 13:16:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2024-12-01 13:16:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 240 states have (on average 1.275) internal successors, (306), 261 states have internal predecessors, (306), 47 states have call successors, (47), 38 states have call predecessors, (47), 38 states have return successors, (61), 42 states have call predecessors, (61), 47 states have call successors, (61) [2024-12-01 13:16:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 414 transitions. [2024-12-01 13:16:27,206 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 414 transitions. Word has length 40 [2024-12-01 13:16:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:27,206 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 414 transitions. [2024-12-01 13:16:27,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 13:16:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 414 transitions. [2024-12-01 13:16:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:16:27,209 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:27,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:27,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 13:16:27,209 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:27,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1224833975, now seen corresponding path program 1 times [2024-12-01 13:16:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917792464] [2024-12-01 13:16:27,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917792464] [2024-12-01 13:16:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917792464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:27,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:27,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:16:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751925071] [2024-12-01 13:16:27,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:27,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:27,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:27,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:27,310 INFO L87 Difference]: Start difference. First operand 326 states and 414 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, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 13:16:27,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:27,347 INFO L93 Difference]: Finished difference Result 648 states and 852 transitions. [2024-12-01 13:16:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:27,349 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, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-12-01 13:16:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:27,351 INFO L225 Difference]: With dead ends: 648 [2024-12-01 13:16:27,352 INFO L226 Difference]: Without dead ends: 330 [2024-12-01 13:16:27,353 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 [2024-12-01 13:16:27,353 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:27,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-12-01 13:16:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2024-12-01 13:16:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 244 states have (on average 1.2704918032786885) internal successors, (310), 265 states have internal predecessors, (310), 47 states have call successors, (47), 38 states have call predecessors, (47), 38 states have return successors, (61), 42 states have call predecessors, (61), 47 states have call successors, (61) [2024-12-01 13:16:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 418 transitions. [2024-12-01 13:16:27,386 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 418 transitions. Word has length 64 [2024-12-01 13:16:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:27,386 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 418 transitions. [2024-12-01 13:16:27,386 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, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 13:16:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 418 transitions. [2024-12-01 13:16:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:16:27,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:27,388 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:27,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 13:16:27,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:27,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:27,389 INFO L85 PathProgramCache]: Analyzing trace with hash -161369419, now seen corresponding path program 1 times [2024-12-01 13:16:27,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:27,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257255380] [2024-12-01 13:16:27,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:27,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257255380] [2024-12-01 13:16:27,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257255380] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:16:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32799316] [2024-12-01 13:16:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:27,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:16:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:27,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:16:27,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:27,493 INFO L87 Difference]: Start difference. First operand 330 states and 418 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 13:16:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:27,545 INFO L93 Difference]: Finished difference Result 658 states and 862 transitions. [2024-12-01 13:16:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-12-01 13:16:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:27,549 INFO L225 Difference]: With dead ends: 658 [2024-12-01 13:16:27,549 INFO L226 Difference]: Without dead ends: 336 [2024-12-01 13:16:27,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:27,552 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:27,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-12-01 13:16:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-12-01 13:16:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.264) internal successors, (316), 271 states have internal predecessors, (316), 47 states have call successors, (47), 38 states have call predecessors, (47), 38 states have return successors, (61), 42 states have call predecessors, (61), 47 states have call successors, (61) [2024-12-01 13:16:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 424 transitions. [2024-12-01 13:16:27,596 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 424 transitions. Word has length 64 [2024-12-01 13:16:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:27,596 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 424 transitions. [2024-12-01 13:16:27,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-01 13:16:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 424 transitions. [2024-12-01 13:16:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 13:16:27,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:27,598 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:27,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 13:16:27,599 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:27,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1926433849, now seen corresponding path program 1 times [2024-12-01 13:16:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:27,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223255154] [2024-12-01 13:16:27,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:27,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223255154] [2024-12-01 13:16:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223255154] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:27,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:27,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:16:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984341983] [2024-12-01 13:16:27,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:27,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:27,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:27,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:27,726 INFO L87 Difference]: Start difference. First operand 336 states and 424 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-12-01 13:16:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:27,938 INFO L93 Difference]: Finished difference Result 1107 states and 1446 transitions. [2024-12-01 13:16:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:27,939 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), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 64 [2024-12-01 13:16:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:27,945 INFO L225 Difference]: With dead ends: 1107 [2024-12-01 13:16:27,945 INFO L226 Difference]: Without dead ends: 779 [2024-12-01 13:16:27,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:27,947 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 158 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:27,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 417 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-12-01 13:16:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 765. [2024-12-01 13:16:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 567 states have (on average 1.2433862433862435) internal successors, (705), 607 states have internal predecessors, (705), 108 states have call successors, (108), 87 states have call predecessors, (108), 89 states have return successors, (165), 100 states have call predecessors, (165), 108 states have call successors, (165) [2024-12-01 13:16:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 978 transitions. [2024-12-01 13:16:28,048 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 978 transitions. Word has length 64 [2024-12-01 13:16:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:28,048 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 978 transitions. [2024-12-01 13:16:28,048 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), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-12-01 13:16:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 978 transitions. [2024-12-01 13:16:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-01 13:16:28,051 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:28,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:28,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 13:16:28,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:28,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1038279777, now seen corresponding path program 1 times [2024-12-01 13:16:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695889374] [2024-12-01 13:16:28,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695889374] [2024-12-01 13:16:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695889374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:16:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245721706] [2024-12-01 13:16:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:28,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:16:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:28,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:16:28,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:28,319 INFO L87 Difference]: Start difference. First operand 765 states and 978 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-01 13:16:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:28,968 INFO L93 Difference]: Finished difference Result 2205 states and 2915 transitions. [2024-12-01 13:16:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 13:16:28,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2024-12-01 13:16:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:28,979 INFO L225 Difference]: With dead ends: 2205 [2024-12-01 13:16:28,979 INFO L226 Difference]: Without dead ends: 1593 [2024-12-01 13:16:28,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:16:28,983 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 402 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:28,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 663 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:16:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2024-12-01 13:16:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1439. [2024-12-01 13:16:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1063 states have (on average 1.2238946378174977) internal successors, (1301), 1140 states have internal predecessors, (1301), 197 states have call successors, (197), 151 states have call predecessors, (197), 178 states have return successors, (316), 194 states have call predecessors, (316), 197 states have call successors, (316) [2024-12-01 13:16:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1814 transitions. [2024-12-01 13:16:29,108 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1814 transitions. Word has length 68 [2024-12-01 13:16:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:29,108 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 1814 transitions. [2024-12-01 13:16:29,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-01 13:16:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1814 transitions. [2024-12-01 13:16:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-01 13:16:29,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:29,111 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:29,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 13:16:29,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:29,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash 925415383, now seen corresponding path program 1 times [2024-12-01 13:16:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983714938] [2024-12-01 13:16:29,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983714938] [2024-12-01 13:16:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983714938] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046265472] [2024-12-01 13:16:29,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:29,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:29,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:29,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:29,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:16:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:29,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 13:16:29,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:29,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:16:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046265472] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:16:29,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:16:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2024-12-01 13:16:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426531975] [2024-12-01 13:16:29,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:16:29,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 13:16:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:29,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 13:16:29,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:16:29,911 INFO L87 Difference]: Start difference. First operand 1439 states and 1814 transitions. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 12 states have internal predecessors, (149), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (25), 8 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-01 13:16:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:30,477 INFO L93 Difference]: Finished difference Result 3262 states and 4274 transitions. [2024-12-01 13:16:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-01 13:16:30,478 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 12 states have internal predecessors, (149), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (25), 8 states have call predecessors, (25), 5 states have call successors, (25) Word has length 121 [2024-12-01 13:16:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:30,485 INFO L225 Difference]: With dead ends: 3262 [2024-12-01 13:16:30,486 INFO L226 Difference]: Without dead ends: 1970 [2024-12-01 13:16:30,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 237 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-12-01 13:16:30,490 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 301 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:30,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1807 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:16:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2024-12-01 13:16:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1749. [2024-12-01 13:16:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1278 states have (on average 1.2120500782472614) internal successors, (1549), 1382 states have internal predecessors, (1549), 241 states have call successors, (241), 201 states have call predecessors, (241), 229 states have return successors, (353), 236 states have call predecessors, (353), 241 states have call successors, (353) [2024-12-01 13:16:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2143 transitions. [2024-12-01 13:16:30,601 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2143 transitions. Word has length 121 [2024-12-01 13:16:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:30,602 INFO L471 AbstractCegarLoop]: Abstraction has 1749 states and 2143 transitions. [2024-12-01 13:16:30,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 12 states have internal predecessors, (149), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (25), 8 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-01 13:16:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2143 transitions. [2024-12-01 13:16:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-01 13:16:30,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:30,608 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 13:16:30,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:16:30,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:30,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:30,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash -948957199, now seen corresponding path program 1 times [2024-12-01 13:16:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:30,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599010474] [2024-12-01 13:16:30,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 92 proven. 35 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-01 13:16:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599010474] [2024-12-01 13:16:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599010474] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135103480] [2024-12-01 13:16:31,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:31,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:31,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:16:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:31,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:16:31,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 167 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-01 13:16:31,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:16:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 78 proven. 41 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-01 13:16:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135103480] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:16:32,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:16:32,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2024-12-01 13:16:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871761494] [2024-12-01 13:16:32,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:16:32,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-01 13:16:32,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:32,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-01 13:16:32,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2024-12-01 13:16:32,125 INFO L87 Difference]: Start difference. First operand 1749 states and 2143 transitions. Second operand has 25 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (45), 11 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-01 13:16:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:34,456 INFO L93 Difference]: Finished difference Result 5417 states and 7039 transitions. [2024-12-01 13:16:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-01 13:16:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (45), 11 states have call predecessors, (45), 10 states have call successors, (45) Word has length 215 [2024-12-01 13:16:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:34,478 INFO L225 Difference]: With dead ends: 5417 [2024-12-01 13:16:34,478 INFO L226 Difference]: Without dead ends: 3586 [2024-12-01 13:16:34,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 424 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=758, Invalid=3664, Unknown=0, NotChecked=0, Total=4422 [2024-12-01 13:16:34,490 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 811 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:34,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1498 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-01 13:16:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2024-12-01 13:16:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3435. [2024-12-01 13:16:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 2548 states have (on average 1.1569858712715855) internal successors, (2948), 2689 states have internal predecessors, (2948), 480 states have call successors, (480), 416 states have call predecessors, (480), 406 states have return successors, (613), 426 states have call predecessors, (613), 480 states have call successors, (613) [2024-12-01 13:16:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4041 transitions. [2024-12-01 13:16:34,797 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4041 transitions. Word has length 215 [2024-12-01 13:16:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:34,797 INFO L471 AbstractCegarLoop]: Abstraction has 3435 states and 4041 transitions. [2024-12-01 13:16:34,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 10 states have call successors, (39), 5 states have call predecessors, (39), 11 states have return successors, (45), 11 states have call predecessors, (45), 10 states have call successors, (45) [2024-12-01 13:16:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4041 transitions. [2024-12-01 13:16:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-12-01 13:16:34,808 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:34,809 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 13:16:34,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 13:16:35,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:35,009 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:35,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 248122837, now seen corresponding path program 1 times [2024-12-01 13:16:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844998362] [2024-12-01 13:16:35,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 101 proven. 62 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-01 13:16:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844998362] [2024-12-01 13:16:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844998362] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14678722] [2024-12-01 13:16:35,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:35,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:35,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:16:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:35,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-01 13:16:35,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 206 proven. 11 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-01 13:16:35,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:16:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 101 proven. 62 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-01 13:16:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14678722] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:16:36,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:16:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-12-01 13:16:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624369923] [2024-12-01 13:16:36,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:16:36,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-01 13:16:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:36,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-01 13:16:36,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:16:36,250 INFO L87 Difference]: Start difference. First operand 3435 states and 4041 transitions. Second operand has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 19 states have internal predecessors, (259), 7 states have call successors, (46), 5 states have call predecessors, (46), 13 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-01 13:16:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:37,091 INFO L93 Difference]: Finished difference Result 6764 states and 8022 transitions. [2024-12-01 13:16:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-01 13:16:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 19 states have internal predecessors, (259), 7 states have call successors, (46), 5 states have call predecessors, (46), 13 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) Word has length 235 [2024-12-01 13:16:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:37,113 INFO L225 Difference]: With dead ends: 6764 [2024-12-01 13:16:37,113 INFO L226 Difference]: Without dead ends: 3615 [2024-12-01 13:16:37,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2024-12-01 13:16:37,136 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 333 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:37,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1267 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 13:16:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2024-12-01 13:16:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3349. [2024-12-01 13:16:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 2484 states have (on average 1.1473429951690821) internal successors, (2850), 2615 states have internal predecessors, (2850), 448 states have call successors, (448), 416 states have call predecessors, (448), 416 states have return successors, (563), 408 states have call predecessors, (563), 448 states have call successors, (563) [2024-12-01 13:16:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 3861 transitions. [2024-12-01 13:16:37,315 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 3861 transitions. Word has length 235 [2024-12-01 13:16:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:37,315 INFO L471 AbstractCegarLoop]: Abstraction has 3349 states and 3861 transitions. [2024-12-01 13:16:37,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 19 states have internal predecessors, (259), 7 states have call successors, (46), 5 states have call predecessors, (46), 13 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-01 13:16:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 3861 transitions. [2024-12-01 13:16:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-12-01 13:16:37,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:37,322 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 13:16:37,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:16:37,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:37,522 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:37,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2003906946, now seen corresponding path program 1 times [2024-12-01 13:16:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141272024] [2024-12-01 13:16:37,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 98 proven. 42 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-01 13:16:38,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141272024] [2024-12-01 13:16:38,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141272024] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601310912] [2024-12-01 13:16:38,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:38,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:38,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:38,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:16:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:38,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-01 13:16:38,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 147 proven. 25 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-12-01 13:16:38,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:16:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 103 proven. 44 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-12-01 13:16:39,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601310912] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:16:39,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:16:39,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 13] total 22 [2024-12-01 13:16:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105167596] [2024-12-01 13:16:39,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:16:39,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-01 13:16:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:39,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-01 13:16:39,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:16:39,277 INFO L87 Difference]: Start difference. First operand 3349 states and 3861 transitions. Second operand has 22 states, 22 states have (on average 11.727272727272727) internal successors, (258), 21 states have internal predecessors, (258), 15 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (52), 15 states have call predecessors, (52), 15 states have call successors, (52) [2024-12-01 13:16:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:40,535 INFO L93 Difference]: Finished difference Result 6634 states and 7820 transitions. [2024-12-01 13:16:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-01 13:16:40,536 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.727272727272727) internal successors, (258), 21 states have internal predecessors, (258), 15 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (52), 15 states have call predecessors, (52), 15 states have call successors, (52) Word has length 236 [2024-12-01 13:16:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:40,553 INFO L225 Difference]: With dead ends: 6634 [2024-12-01 13:16:40,554 INFO L226 Difference]: Without dead ends: 4671 [2024-12-01 13:16:40,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 467 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=439, Invalid=1121, Unknown=0, NotChecked=0, Total=1560 [2024-12-01 13:16:40,559 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 767 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:40,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 889 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:16:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2024-12-01 13:16:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4161. [2024-12-01 13:16:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 3088 states have (on average 1.141839378238342) internal successors, (3526), 3239 states have internal predecessors, (3526), 564 states have call successors, (564), 522 states have call predecessors, (564), 508 states have return successors, (671), 510 states have call predecessors, (671), 564 states have call successors, (671) [2024-12-01 13:16:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 4761 transitions. [2024-12-01 13:16:40,824 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 4761 transitions. Word has length 236 [2024-12-01 13:16:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:40,824 INFO L471 AbstractCegarLoop]: Abstraction has 4161 states and 4761 transitions. [2024-12-01 13:16:40,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.727272727272727) internal successors, (258), 21 states have internal predecessors, (258), 15 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (52), 15 states have call predecessors, (52), 15 states have call successors, (52) [2024-12-01 13:16:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 4761 transitions. [2024-12-01 13:16:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-01 13:16:40,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:40,833 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 13:16:40,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:16:41,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:41,034 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:41,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1855794494, now seen corresponding path program 1 times [2024-12-01 13:16:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969865715] [2024-12-01 13:16:41,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-12-01 13:16:41,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969865715] [2024-12-01 13:16:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969865715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:41,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287969749] [2024-12-01 13:16:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:41,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:41,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:41,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:41,154 INFO L87 Difference]: Start difference. First operand 4161 states and 4761 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:41,356 INFO L93 Difference]: Finished difference Result 6659 states and 7624 transitions. [2024-12-01 13:16:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 273 [2024-12-01 13:16:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:41,374 INFO L225 Difference]: With dead ends: 6659 [2024-12-01 13:16:41,374 INFO L226 Difference]: Without dead ends: 2506 [2024-12-01 13:16:41,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:41,384 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 27 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:41,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 280 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-12-01 13:16:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2474. [2024-12-01 13:16:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1848 states have (on average 1.1352813852813852) internal successors, (2098), 1942 states have internal predecessors, (2098), 327 states have call successors, (327), 306 states have call predecessors, (327), 298 states have return successors, (369), 301 states have call predecessors, (369), 327 states have call successors, (369) [2024-12-01 13:16:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 2794 transitions. [2024-12-01 13:16:41,639 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 2794 transitions. Word has length 273 [2024-12-01 13:16:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:41,640 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 2794 transitions. [2024-12-01 13:16:41,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 2794 transitions. [2024-12-01 13:16:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-12-01 13:16:41,648 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:41,649 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 13:16:41,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 13:16:41,649 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:41,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -761724875, now seen corresponding path program 1 times [2024-12-01 13:16:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008058254] [2024-12-01 13:16:41,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-12-01 13:16:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:42,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008058254] [2024-12-01 13:16:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008058254] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:42,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507941363] [2024-12-01 13:16:42,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:42,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:42,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:42,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:16:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:42,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-01 13:16:42,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 153 proven. 80 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-12-01 13:16:42,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:16:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 92 proven. 124 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-12-01 13:16:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507941363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:16:43,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:16:43,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 16] total 24 [2024-12-01 13:16:43,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404809504] [2024-12-01 13:16:43,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:16:43,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-01 13:16:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:43,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-01 13:16:43,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-12-01 13:16:43,162 INFO L87 Difference]: Start difference. First operand 2474 states and 2794 transitions. Second operand has 24 states, 24 states have (on average 13.333333333333334) internal successors, (320), 23 states have internal predecessors, (320), 16 states have call successors, (60), 10 states have call predecessors, (60), 17 states have return successors, (63), 16 states have call predecessors, (63), 16 states have call successors, (63) [2024-12-01 13:16:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:44,412 INFO L93 Difference]: Finished difference Result 6098 states and 6974 transitions. [2024-12-01 13:16:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 13:16:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.333333333333334) internal successors, (320), 23 states have internal predecessors, (320), 16 states have call successors, (60), 10 states have call predecessors, (60), 17 states have return successors, (63), 16 states have call predecessors, (63), 16 states have call successors, (63) Word has length 273 [2024-12-01 13:16:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:44,418 INFO L225 Difference]: With dead ends: 6098 [2024-12-01 13:16:44,418 INFO L226 Difference]: Without dead ends: 0 [2024-12-01 13:16:44,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 526 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2024-12-01 13:16:44,429 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 940 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:44,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1176 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 13:16:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-01 13:16:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-01 13:16:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-01 13:16:44,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 273 [2024-12-01 13:16:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:44,434 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-01 13:16:44,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.333333333333334) internal successors, (320), 23 states have internal predecessors, (320), 16 states have call successors, (60), 10 states have call predecessors, (60), 17 states have return successors, (63), 16 states have call predecessors, (63), 16 states have call successors, (63) [2024-12-01 13:16:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-01 13:16:44,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-01 13:16:44,437 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-01 13:16:44,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 13:16:44,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:44,639 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:44,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-01 13:17:16,041 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-01 13:17:16,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 01:17:16 BoogieIcfgContainer [2024-12-01 13:17:16,053 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-01 13:17:16,054 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-01 13:17:16,054 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-01 13:17:16,054 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-01 13:17:16,055 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:25" (3/4) ... [2024-12-01 13:17:16,057 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-01 13:17:16,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-12-01 13:17:16,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-12-01 13:17:16,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-12-01 13:17:16,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-12-01 13:17:16,067 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-12-01 13:17:16,067 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-12-01 13:17:16,067 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-01 13:17:16,067 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-01 13:17:16,068 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-01 13:17:16,142 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-01 13:17:16,143 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-01 13:17:16,143 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-01 13:17:16,143 INFO L158 Benchmark]: Toolchain (without parser) took 51104.46ms. Allocated memory was 117.4MB in the beginning and 713.0MB in the end (delta: 595.6MB). Free memory was 92.2MB in the beginning and 425.0MB in the end (delta: -332.8MB). Peak memory consumption was 259.0MB. Max. memory is 16.1GB. [2024-12-01 13:17:16,143 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:17:16,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.72ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 72.8MB in the end (delta: 19.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:17:16,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.38ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:17:16,144 INFO L158 Benchmark]: Boogie Preprocessor took 44.52ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 68.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:17:16,144 INFO L158 Benchmark]: RCFGBuilder took 398.54ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 50.2MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 13:17:16,145 INFO L158 Benchmark]: TraceAbstraction took 50103.86ms. Allocated memory was 117.4MB in the beginning and 713.0MB in the end (delta: 595.6MB). Free memory was 49.7MB in the beginning and 429.0MB in the end (delta: -379.3MB). Peak memory consumption was 418.8MB. Max. memory is 16.1GB. [2024-12-01 13:17:16,145 INFO L158 Benchmark]: Witness Printer took 88.89ms. Allocated memory is still 713.0MB. Free memory was 429.0MB in the beginning and 425.0MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:17:16,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.72ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 72.8MB in the end (delta: 19.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.38ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.52ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 68.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 398.54ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 50.2MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 50103.86ms. Allocated memory was 117.4MB in the beginning and 713.0MB in the end (delta: 595.6MB). Free memory was 49.7MB in the beginning and 429.0MB in the end (delta: -379.3MB). Peak memory consumption was 418.8MB. Max. memory is 16.1GB. * Witness Printer took 88.89ms. Allocated memory is still 713.0MB. Free memory was 429.0MB in the beginning and 425.0MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [49] - GenericResultAtLocation [Line: 101]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [101] - GenericResultAtLocation [Line: 176]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [176] - GenericResultAtLocation [Line: 450]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [450] - GenericResultAtLocation [Line: 553]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [553] - GenericResultAtLocation [Line: 653]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [653] - GenericResultAtLocation [Line: 662]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [662] - GenericResultAtLocation [Line: 697]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [697] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 658]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 14, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4109 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4064 mSDsluCounter, 10306 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8124 mSDsCounter, 1529 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7141 IncrementalHoareTripleChecker+Invalid, 8670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1529 mSolverCounterUnsat, 2182 mSDtfsCounter, 7141 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2400 GetRequests, 2143 SyntacticMatches, 26 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4161occurred in iteration=12, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1356 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 2834 NumberOfCodeBlocks, 2834 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3890 ConstructedInterpolants, 0 QuantifiedInterpolants, 8244 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3135 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 3514/4151 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 565]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 117]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: ((((((((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1)) || ((((pumpRunning == 0) && (splverifierCounter == 0)) && (waterLevel <= 2)) && (0 == systemActive))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0))) RESULT: Ultimate proved your program to be correct! [2024-12-01 13:17:16,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858f9412-0daa-4fc9-aa9e-0f4118c0ef09/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE