./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-080.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_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-080.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:09:04,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:09:04,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:09:04,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:09:04,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:09:04,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:09:04,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:09:04,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:09:04,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:09:04,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:09:04,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:09:04,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:09:04,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:09:04,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:09:04,509 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:09:04,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:09:04,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:09:04,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:09:04,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:09:04,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:09:04,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:09:04,511 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:09:04,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:09:04,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:09:04,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:04,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:04,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:04,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:04,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:09:04,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:09:04,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:09:04,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:09:04,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:04,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:09:04,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:09:04,514 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:09:04,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:09:04,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:09:04,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:09:04,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:09:04,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:09:04,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:09:04,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:09:04,515 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_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd [2024-11-28 03:09:04,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:09:04,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:09:04,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:09:04,867 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:09:04,868 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:09:04,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-080.c [2024-11-28 03:09:08,172 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/data/f303a1f01/4ec31ed2bc73476c8fb2dbf7cc26a8b9/FLAGc35698b03 [2024-11-28 03:09:08,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:09:08,697 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/sv-benchmarks/c/xcsp/Dubois-080.c [2024-11-28 03:09:08,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/data/f303a1f01/4ec31ed2bc73476c8fb2dbf7cc26a8b9/FLAGc35698b03 [2024-11-28 03:09:08,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/data/f303a1f01/4ec31ed2bc73476c8fb2dbf7cc26a8b9 [2024-11-28 03:09:08,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:09:08,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:09:08,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:09:08,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:09:08,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:09:08,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:08" (1/1) ... [2024-11-28 03:09:08,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3cc14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:08, skipping insertion in model container [2024-11-28 03:09:08,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:08" (1/1) ... [2024-11-28 03:09:08,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:09:09,584 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_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-28 03:09:09,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:09:09,664 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:09:10,089 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_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-28 03:09:10,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:09:10,157 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:09:10,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10 WrapperNode [2024-11-28 03:09:10,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:09:10,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:09:10,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:09:10,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:09:10,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:10,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:11,459 INFO L138 Inliner]: procedures = 13, calls = 647, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15936 [2024-11-28 03:09:11,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:09:11,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:09:11,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:09:11,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:09:11,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:11,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:11,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,033 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]. [2024-11-28 03:09:12,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,461 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:09:12,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:09:12,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:09:12,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:09:12,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (1/1) ... [2024-11-28 03:09:12,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:09:12,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:12,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:09:12,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:09:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:09:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:09:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:09:12,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:09:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-28 03:09:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-28 03:09:13,756 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:09:13,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:09:42,916 INFO L? ?]: Removed 5525 outVars from TransFormulas that were not future-live. [2024-11-28 03:09:42,917 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:09:43,042 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:09:43,043 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:09:43,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:43 BoogieIcfgContainer [2024-11-28 03:09:43,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:09:43,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:09:43,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:09:43,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:09:43,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:08" (1/3) ... [2024-11-28 03:09:43,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9a29b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:43, skipping insertion in model container [2024-11-28 03:09:43,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:10" (2/3) ... [2024-11-28 03:09:43,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9a29b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:43, skipping insertion in model container [2024-11-28 03:09:43,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:43" (3/3) ... [2024-11-28 03:09:43,063 INFO L128 eAbstractionObserver]: Analyzing ICFG Dubois-080.c [2024-11-28 03:09:43,083 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:09:43,086 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-080.c that has 2 procedures, 6331 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:09:43,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:09:43,372 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;@7859e5a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:09:43,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:09:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 6331 states, 5688 states have (on average 1.619198312236287) internal successors, (9210), 5689 states have internal predecessors, (9210), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-28 03:09:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5364 [2024-11-28 03:09:43,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:43,734 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:43,735 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:43,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1158448456, now seen corresponding path program 1 times [2024-11-28 03:09:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144773009] [2024-11-28 03:09:43,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 0 proven. 1278 refuted. 0 times theorem prover too weak. 816642 trivial. 0 not checked. [2024-11-28 03:09:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144773009] [2024-11-28 03:09:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144773009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058622779] [2024-11-28 03:09:54,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:54,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:54,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:54,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:09:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:58,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:09:58,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1278 proven. 0 refuted. 0 times theorem prover too weak. 816642 trivial. 0 not checked. [2024-11-28 03:09:58,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058622779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:58,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:58,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:09:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762387036] [2024-11-28 03:09:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:58,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:09:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:58,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:09:58,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:09:58,961 INFO L87 Difference]: Start difference. First operand has 6331 states, 5688 states have (on average 1.619198312236287) internal successors, (9210), 5689 states have internal predecessors, (9210), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) Second operand has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:09:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:59,443 INFO L93 Difference]: Finished difference Result 12656 states and 21614 transitions. [2024-11-28 03:09:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:09:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5363 [2024-11-28 03:09:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:59,516 INFO L225 Difference]: With dead ends: 12656 [2024-11-28 03:09:59,516 INFO L226 Difference]: Without dead ends: 6328 [2024-11-28 03:09:59,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5364 GetRequests, 5364 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:09:59,549 INFO L435 NwaCegarLoop]: 10486 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, 10486 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:59,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10486 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:09:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2024-11-28 03:10:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6328. [2024-11-28 03:10:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 5686 states have (on average 1.6190643686246922) internal successors, (9206), 5686 states have internal predecessors, (9206), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-28 03:10:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 10486 transitions. [2024-11-28 03:10:00,661 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 10486 transitions. Word has length 5363 [2024-11-28 03:10:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:00,665 INFO L471 AbstractCegarLoop]: Abstraction has 6328 states and 10486 transitions. [2024-11-28 03:10:00,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 10486 transitions. [2024-11-28 03:10:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5364 [2024-11-28 03:10:01,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:01,375 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:01,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:10:01,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:10:01,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:01,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1373673800, now seen corresponding path program 1 times [2024-11-28 03:10:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446234359] [2024-11-28 03:10:01,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:10:15,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446234359] [2024-11-28 03:10:15,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446234359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138730945] [2024-11-28 03:10:15,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:15,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:15,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:15,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:10:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:18,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:10:18,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:10:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1917 proven. 0 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:10:19,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:10:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138730945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:10:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 03:10:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979981460] [2024-11-28 03:10:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:10:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:19,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:10:19,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:10:19,203 INFO L87 Difference]: Start difference. First operand 6328 states and 10486 transitions. Second operand has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:10:25,205 INFO L93 Difference]: Finished difference Result 6340 states and 10500 transitions. [2024-11-28 03:10:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:10:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5363 [2024-11-28 03:10:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:10:25,264 INFO L225 Difference]: With dead ends: 6340 [2024-11-28 03:10:25,264 INFO L226 Difference]: Without dead ends: 6330 [2024-11-28 03:10:25,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5368 GetRequests, 5362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:10:25,270 INFO L435 NwaCegarLoop]: 9842 mSDtfsCounter, 1 mSDsluCounter, 38075 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47917 SdHoareTripleChecker+Invalid, 4510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:10:25,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47917 Invalid, 4510 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 03:10:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2024-11-28 03:10:26,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6330. [2024-11-28 03:10:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 5688 states have (on average 1.6188466947960618) internal successors, (9208), 5688 states have internal predecessors, (9208), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-28 03:10:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 10488 transitions. [2024-11-28 03:10:26,077 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 10488 transitions. Word has length 5363 [2024-11-28 03:10:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:26,103 INFO L471 AbstractCegarLoop]: Abstraction has 6330 states and 10488 transitions. [2024-11-28 03:10:26,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 10488 transitions. [2024-11-28 03:10:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5365 [2024-11-28 03:10:26,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:26,427 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:26,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:10:26,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:26,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:26,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash 280795830, now seen corresponding path program 1 times [2024-11-28 03:10:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38890545] [2024-11-28 03:10:26,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:10:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38890545] [2024-11-28 03:10:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38890545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554641945] [2024-11-28 03:10:36,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:36,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:36,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:36,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:10:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:39,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 11709 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:10:40,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:10:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-28 03:10:40,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:10:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554641945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:10:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:10:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459648210] [2024-11-28 03:10:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:40,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:10:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:40,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:10:40,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:10:40,674 INFO L87 Difference]: Start difference. First operand 6330 states and 10488 transitions. Second operand has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:10:41,100 INFO L93 Difference]: Finished difference Result 6360 states and 10530 transitions. [2024-11-28 03:10:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:10:41,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5364 [2024-11-28 03:10:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:10:41,200 INFO L225 Difference]: With dead ends: 6360 [2024-11-28 03:10:41,203 INFO L226 Difference]: Without dead ends: 6339 [2024-11-28 03:10:41,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5369 GetRequests, 5363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:10:41,217 INFO L435 NwaCegarLoop]: 10482 mSDtfsCounter, 9 mSDsluCounter, 20951 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31433 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:10:41,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31433 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:10:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2024-11-28 03:10:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6339. [2024-11-28 03:10:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 5697 states have (on average 1.618571177812884) internal successors, (9221), 5697 states have internal predecessors, (9221), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-28 03:10:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 10501 transitions. [2024-11-28 03:10:42,273 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 10501 transitions. Word has length 5364 [2024-11-28 03:10:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 6339 states and 10501 transitions. [2024-11-28 03:10:42,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 10501 transitions. [2024-11-28 03:10:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5365 [2024-11-28 03:10:42,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:42,930 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:43,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:10:43,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:43,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:43,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1149127280, now seen corresponding path program 1 times [2024-11-28 03:10:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054804582] [2024-11-28 03:10:43,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:10:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054804582] [2024-11-28 03:10:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054804582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865018737] [2024-11-28 03:10:51,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:51,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:10:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:54,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 11709 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:10:54,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:10:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-28 03:10:55,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:10:55,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865018737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:10:55,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:10:55,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:10:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605326334] [2024-11-28 03:10:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:10:55,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:10:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:55,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:10:55,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:55,129 INFO L87 Difference]: Start difference. First operand 6339 states and 10501 transitions. Second operand has 3 states, 3 states have (on average 723.3333333333334) internal successors, (2170), 3 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:10:55,316 INFO L93 Difference]: Finished difference Result 6357 states and 10523 transitions. [2024-11-28 03:10:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:10:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 723.3333333333334) internal successors, (2170), 3 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5364 [2024-11-28 03:10:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:10:55,362 INFO L225 Difference]: With dead ends: 6357 [2024-11-28 03:10:55,362 INFO L226 Difference]: Without dead ends: 6340 [2024-11-28 03:10:55,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5369 GetRequests, 5364 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:10:55,367 INFO L435 NwaCegarLoop]: 10485 mSDtfsCounter, 0 mSDsluCounter, 10476 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20961 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:10:55,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20961 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:10:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2024-11-28 03:10:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6340. [2024-11-28 03:10:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 5698 states have (on average 1.6182871182871184) internal successors, (9221), 5698 states have internal predecessors, (9221), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-28 03:10:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 10501 transitions. [2024-11-28 03:10:55,910 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 10501 transitions. Word has length 5364 [2024-11-28 03:10:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:55,921 INFO L471 AbstractCegarLoop]: Abstraction has 6340 states and 10501 transitions. [2024-11-28 03:10:55,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 723.3333333333334) internal successors, (2170), 3 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:10:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 10501 transitions. [2024-11-28 03:10:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5366 [2024-11-28 03:10:56,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:56,227 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:56,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:10:56,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:56,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:56,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1813123422, now seen corresponding path program 1 times [2024-11-28 03:10:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159451630] [2024-11-28 03:10:56,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:11:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159451630] [2024-11-28 03:11:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159451630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661520537] [2024-11-28 03:11:05,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:05,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:05,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:05,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:11:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:08,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 11712 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:11:08,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-28 03:11:17,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661520537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:17,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:17,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:11:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123857429] [2024-11-28 03:11:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:17,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:17,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:17,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:17,197 INFO L87 Difference]: Start difference. First operand 6340 states and 10501 transitions. Second operand has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 3 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 3 states have call predecessors, (640), 3 states have call successors, (640) [2024-11-28 03:11:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:17,593 INFO L93 Difference]: Finished difference Result 17511 states and 29003 transitions. [2024-11-28 03:11:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 3 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 3 states have call predecessors, (640), 3 states have call successors, (640) Word has length 5365 [2024-11-28 03:11:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:17,666 INFO L225 Difference]: With dead ends: 17511 [2024-11-28 03:11:17,666 INFO L226 Difference]: Without dead ends: 11917 [2024-11-28 03:11:17,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5370 GetRequests, 5365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:17,681 INFO L435 NwaCegarLoop]: 15066 mSDtfsCounter, 7029 mSDsluCounter, 10522 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7029 SdHoareTripleChecker+Valid, 25588 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:17,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7029 Valid, 25588 Invalid, 56 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:11:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11917 states. [2024-11-28 03:11:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11917 to 11917. [2024-11-28 03:11:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11917 states, 11116 states have (on average 1.6322418136020151) internal successors, (18144), 11116 states have internal predecessors, (18144), 799 states have call successors, (799), 1 states have call predecessors, (799), 1 states have return successors, (799), 799 states have call predecessors, (799), 799 states have call successors, (799) [2024-11-28 03:11:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11917 states to 11917 states and 19742 transitions. [2024-11-28 03:11:18,658 INFO L78 Accepts]: Start accepts. Automaton has 11917 states and 19742 transitions. Word has length 5365 [2024-11-28 03:11:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:18,667 INFO L471 AbstractCegarLoop]: Abstraction has 11917 states and 19742 transitions. [2024-11-28 03:11:18,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 3 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 3 states have call predecessors, (640), 3 states have call successors, (640) [2024-11-28 03:11:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 11917 states and 19742 transitions. [2024-11-28 03:11:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5366 [2024-11-28 03:11:18,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:18,983 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:19,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:11:19,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:19,184 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:19,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1736928594, now seen corresponding path program 1 times [2024-11-28 03:11:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842106144] [2024-11-28 03:11:19,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:19,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:11:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842106144] [2024-11-28 03:11:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842106144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723385015] [2024-11-28 03:11:28,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:28,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:11:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:31,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 11712 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:11:31,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-28 03:11:31,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723385015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:31,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 03:11:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681945920] [2024-11-28 03:11:31,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:31,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:31,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:31,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:31,459 INFO L87 Difference]: Start difference. First operand 11917 states and 19742 transitions. Second operand has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:11:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:31,694 INFO L93 Difference]: Finished difference Result 11985 states and 19843 transitions. [2024-11-28 03:11:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:31,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5365 [2024-11-28 03:11:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:31,744 INFO L225 Difference]: With dead ends: 11985 [2024-11-28 03:11:31,744 INFO L226 Difference]: Without dead ends: 11934 [2024-11-28 03:11:31,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5370 GetRequests, 5364 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:11:31,752 INFO L435 NwaCegarLoop]: 10482 mSDtfsCounter, 9 mSDsluCounter, 20951 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31433 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:31,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31433 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11934 states. [2024-11-28 03:11:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11934 to 11934. [2024-11-28 03:11:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11934 states, 11133 states have (on average 1.6319949699092786) internal successors, (18169), 11133 states have internal predecessors, (18169), 799 states have call successors, (799), 1 states have call predecessors, (799), 1 states have return successors, (799), 799 states have call predecessors, (799), 799 states have call successors, (799) [2024-11-28 03:11:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11934 states to 11934 states and 19767 transitions. [2024-11-28 03:11:32,651 INFO L78 Accepts]: Start accepts. Automaton has 11934 states and 19767 transitions. Word has length 5365 [2024-11-28 03:11:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:32,657 INFO L471 AbstractCegarLoop]: Abstraction has 11934 states and 19767 transitions. [2024-11-28 03:11:32,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 542.75) internal successors, (2171), 4 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:11:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11934 states and 19767 transitions. [2024-11-28 03:11:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5366 [2024-11-28 03:11:32,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:32,977 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:33,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:11:33,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:11:33,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:33,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash -752832376, now seen corresponding path program 1 times [2024-11-28 03:11:33,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:33,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162752713] [2024-11-28 03:11:33,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:33,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-28 03:11:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162752713] [2024-11-28 03:11:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162752713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735979005] [2024-11-28 03:11:41,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:41,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:41,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:11:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:43,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 11712 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:11:43,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-28 03:11:43,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735979005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:43,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:43,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:11:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578211251] [2024-11-28 03:11:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:43,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:43,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:43,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:43,579 INFO L87 Difference]: Start difference. First operand 11934 states and 19767 transitions. Second operand has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:11:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:43,751 INFO L93 Difference]: Finished difference Result 11965 states and 19808 transitions. [2024-11-28 03:11:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:11:43,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5365 [2024-11-28 03:11:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:43,797 INFO L225 Difference]: With dead ends: 11965 [2024-11-28 03:11:43,797 INFO L226 Difference]: Without dead ends: 11927 [2024-11-28 03:11:43,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5370 GetRequests, 5365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:43,804 INFO L435 NwaCegarLoop]: 10485 mSDtfsCounter, 0 mSDsluCounter, 10476 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20961 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:43,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20961 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:11:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2024-11-28 03:11:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 11927. [2024-11-28 03:11:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11927 states, 11126 states have (on average 1.6317634369944274) internal successors, (18155), 11126 states have internal predecessors, (18155), 799 states have call successors, (799), 1 states have call predecessors, (799), 1 states have return successors, (799), 799 states have call predecessors, (799), 799 states have call successors, (799) [2024-11-28 03:11:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11927 states to 11927 states and 19753 transitions. [2024-11-28 03:11:44,638 INFO L78 Accepts]: Start accepts. Automaton has 11927 states and 19753 transitions. Word has length 5365 [2024-11-28 03:11:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:44,644 INFO L471 AbstractCegarLoop]: Abstraction has 11927 states and 19753 transitions. [2024-11-28 03:11:44,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-28 03:11:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11927 states and 19753 transitions. [2024-11-28 03:11:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5367 [2024-11-28 03:11:44,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:44,850 INFO L218 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:44,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:45,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a98fbc-4c8f-4e61-92bb-2ef9a5decc26/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:11:45,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:45,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1167663708, now seen corresponding path program 1 times [2024-11-28 03:11:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86867463] [2024-11-28 03:11:45,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat