./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i --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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/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 5435813e8a4ec120b68138e4f3d79279dd9250845bb50f86b902d431f8071ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:30:17,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:30:17,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:30:17,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:30:17,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:30:17,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:30:17,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:30:17,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:30:17,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:30:17,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:30:17,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:30:17,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:30:17,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:30:17,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:30:17,449 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:30:17,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:30:17,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:30:17,450 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:30:17,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:30:17,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:30:17,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:30:17,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:30:17,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:30:17,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:30:17,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:30:17,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:30:17,452 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:30:17,452 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:30:17,452 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:30:17,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:17,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:17,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:17,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:17,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:30:17,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:17,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:17,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:30:17,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:30:17,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:30:17,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:30:17,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:30:17,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:30:17,456 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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/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 -> 5435813e8a4ec120b68138e4f3d79279dd9250845bb50f86b902d431f8071ca4 [2024-11-28 02:30:17,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:30:17,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:30:17,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:30:17,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:30:17,898 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:30:17,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2024-11-28 02:30:21,670 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/data/54b476d05/b047e8b54e0040649d9275c58c7277e5/FLAGcd31781ed [2024-11-28 02:30:22,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:30:22,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2024-11-28 02:30:22,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/data/54b476d05/b047e8b54e0040649d9275c58c7277e5/FLAGcd31781ed [2024-11-28 02:30:22,140 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/data/54b476d05/b047e8b54e0040649d9275c58c7277e5 [2024-11-28 02:30:22,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:30:22,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:30:22,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:22,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:30:22,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:30:22,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df3ecf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22, skipping insertion in model container [2024-11-28 02:30:22,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:30:22,411 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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i[915,928] [2024-11-28 02:30:22,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:22,636 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:30:22,650 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_55cdb151-a00e-46ad-8dd9-96099c7ad97f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-3.i[915,928] [2024-11-28 02:30:22,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:22,783 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:30:22,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22 WrapperNode [2024-11-28 02:30:22,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:22,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:22,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:30:22,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:30:22,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,939 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 583 [2024-11-28 02:30:22,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:22,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:30:22,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:30:22,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:30:22,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:22,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,032 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 02:30:23,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:30:23,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:30:23,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:30:23,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:30:23,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (1/1) ... [2024-11-28 02:30:23,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:23,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:30:23,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:30:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:30:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:30:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:30:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:30:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:30:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:30:23,435 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:30:23,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:30:24,846 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-28 02:30:24,847 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:30:24,880 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:30:24,881 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:30:24,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:24 BoogieIcfgContainer [2024-11-28 02:30:24,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:30:24,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:30:24,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:30:24,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:30:24,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:30:22" (1/3) ... [2024-11-28 02:30:24,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc41b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:24, skipping insertion in model container [2024-11-28 02:30:24,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:22" (2/3) ... [2024-11-28 02:30:24,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc41b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:24, skipping insertion in model container [2024-11-28 02:30:24,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:24" (3/3) ... [2024-11-28 02:30:24,923 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-3.i [2024-11-28 02:30:24,944 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:30:24,948 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-3.i that has 2 procedures, 254 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:30:25,036 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:30:25,052 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;@7e12bd6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:30:25,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:30:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 165 states have (on average 1.5151515151515151) internal successors, (250), 166 states have internal predecessors, (250), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 02:30:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-28 02:30:25,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:25,103 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:25,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:25,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1470984820, now seen corresponding path program 1 times [2024-11-28 02:30:25,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:25,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514165084] [2024-11-28 02:30:25,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-28 02:30:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514165084] [2024-11-28 02:30:26,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514165084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83669640] [2024-11-28 02:30:26,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:26,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:26,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:26,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:26,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:30:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:26,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:30:26,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-28 02:30:26,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:30:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83669640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:30:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:30:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724466978] [2024-11-28 02:30:26,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:26,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:30:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:26,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:30:26,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:30:26,923 INFO L87 Difference]: Start difference. First operand has 254 states, 165 states have (on average 1.5151515151515151) internal successors, (250), 166 states have internal predecessors, (250), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:30:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:27,061 INFO L93 Difference]: Finished difference Result 501 states and 924 transitions. [2024-11-28 02:30:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:30:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 535 [2024-11-28 02:30:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:27,079 INFO L225 Difference]: With dead ends: 501 [2024-11-28 02:30:27,079 INFO L226 Difference]: Without dead ends: 250 [2024-11-28 02:30:27,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 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 02:30:27,095 INFO L435 NwaCegarLoop]: 413 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, 413 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:27,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:30:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-28 02:30:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2024-11-28 02:30:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 162 states have (on average 1.4876543209876543) internal successors, (241), 162 states have internal predecessors, (241), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 02:30:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 413 transitions. [2024-11-28 02:30:27,235 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 413 transitions. Word has length 535 [2024-11-28 02:30:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:27,237 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 413 transitions. [2024-11-28 02:30:27,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:30:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 413 transitions. [2024-11-28 02:30:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-28 02:30:27,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:27,264 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:27,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:30:27,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:27,468 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:27,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1400226440, now seen corresponding path program 1 times [2024-11-28 02:30:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313191583] [2024-11-28 02:30:27,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313191583] [2024-11-28 02:30:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313191583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:29,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313290784] [2024-11-28 02:30:29,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:29,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:29,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:29,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:29,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:29,089 INFO L87 Difference]: Start difference. First operand 250 states and 413 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:29,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:29,182 INFO L93 Difference]: Finished difference Result 498 states and 825 transitions. [2024-11-28 02:30:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:29,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 535 [2024-11-28 02:30:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:29,192 INFO L225 Difference]: With dead ends: 498 [2024-11-28 02:30:29,192 INFO L226 Difference]: Without dead ends: 251 [2024-11-28 02:30:29,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:29,199 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:29,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 819 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:30:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-28 02:30:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2024-11-28 02:30:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 163 states have (on average 1.4846625766871167) internal successors, (242), 163 states have internal predecessors, (242), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 02:30:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 414 transitions. [2024-11-28 02:30:29,259 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 414 transitions. Word has length 535 [2024-11-28 02:30:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:29,264 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 414 transitions. [2024-11-28 02:30:29,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 414 transitions. [2024-11-28 02:30:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-28 02:30:29,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:29,272 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:29,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:30:29,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:29,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -689714363, now seen corresponding path program 1 times [2024-11-28 02:30:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52174620] [2024-11-28 02:30:29,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:30,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:30,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52174620] [2024-11-28 02:30:30,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52174620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:30,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:30,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839969199] [2024-11-28 02:30:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:30,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:30,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:30,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:30,494 INFO L87 Difference]: Start difference. First operand 251 states and 414 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:30,695 INFO L93 Difference]: Finished difference Result 747 states and 1236 transitions. [2024-11-28 02:30:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:30,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-28 02:30:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:30,711 INFO L225 Difference]: With dead ends: 747 [2024-11-28 02:30:30,712 INFO L226 Difference]: Without dead ends: 499 [2024-11-28 02:30:30,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:30,716 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 263 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:30,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 802 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:30:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-28 02:30:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2024-11-28 02:30:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 322 states have (on average 1.484472049689441) internal successors, (478), 322 states have internal predecessors, (478), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-28 02:30:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 822 transitions. [2024-11-28 02:30:30,975 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 822 transitions. Word has length 537 [2024-11-28 02:30:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:30,980 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 822 transitions. [2024-11-28 02:30:30,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 822 transitions. [2024-11-28 02:30:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-11-28 02:30:30,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:30,995 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:30,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:30:30,995 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:30,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1238558339, now seen corresponding path program 1 times [2024-11-28 02:30:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750738647] [2024-11-28 02:30:30,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:31,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:31,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750738647] [2024-11-28 02:30:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750738647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:31,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:31,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468136806] [2024-11-28 02:30:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:31,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:31,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:31,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:31,960 INFO L87 Difference]: Start difference. First operand 497 states and 822 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:32,158 INFO L93 Difference]: Finished difference Result 1485 states and 2460 transitions. [2024-11-28 02:30:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 537 [2024-11-28 02:30:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:32,175 INFO L225 Difference]: With dead ends: 1485 [2024-11-28 02:30:32,175 INFO L226 Difference]: Without dead ends: 991 [2024-11-28 02:30:32,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:32,179 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 224 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:32,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 801 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:30:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-28 02:30:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 989. [2024-11-28 02:30:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 640 states have (on average 1.475) internal successors, (944), 640 states have internal predecessors, (944), 344 states have call successors, (344), 4 states have call predecessors, (344), 4 states have return successors, (344), 344 states have call predecessors, (344), 344 states have call successors, (344) [2024-11-28 02:30:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1632 transitions. [2024-11-28 02:30:32,569 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1632 transitions. Word has length 537 [2024-11-28 02:30:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:32,571 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1632 transitions. [2024-11-28 02:30:32,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1632 transitions. [2024-11-28 02:30:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-28 02:30:32,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:32,581 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:32,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:30:32,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:32,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash 110787317, now seen corresponding path program 1 times [2024-11-28 02:30:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:32,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967904488] [2024-11-28 02:30:32,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:33,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967904488] [2024-11-28 02:30:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967904488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:33,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438475785] [2024-11-28 02:30:33,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:33,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:33,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:33,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:33,179 INFO L87 Difference]: Start difference. First operand 989 states and 1632 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:33,568 INFO L93 Difference]: Finished difference Result 2945 states and 4870 transitions. [2024-11-28 02:30:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:33,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 538 [2024-11-28 02:30:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:33,591 INFO L225 Difference]: With dead ends: 2945 [2024-11-28 02:30:33,591 INFO L226 Difference]: Without dead ends: 1959 [2024-11-28 02:30:33,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:33,599 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 397 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:33,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1190 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:30:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2024-11-28 02:30:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2024-11-28 02:30:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1260 states have (on average 1.46984126984127) internal successors, (1852), 1260 states have internal predecessors, (1852), 688 states have call successors, (688), 8 states have call predecessors, (688), 8 states have return successors, (688), 688 states have call predecessors, (688), 688 states have call successors, (688) [2024-11-28 02:30:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3228 transitions. [2024-11-28 02:30:34,055 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3228 transitions. Word has length 538 [2024-11-28 02:30:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:34,058 INFO L471 AbstractCegarLoop]: Abstraction has 1957 states and 3228 transitions. [2024-11-28 02:30:34,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3228 transitions. [2024-11-28 02:30:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-11-28 02:30:34,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:34,066 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:34,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:30:34,067 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:34,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash -924491697, now seen corresponding path program 1 times [2024-11-28 02:30:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512744767] [2024-11-28 02:30:34,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512744767] [2024-11-28 02:30:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512744767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:34,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:34,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144046719] [2024-11-28 02:30:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:34,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:34,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:34,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:34,469 INFO L87 Difference]: Start difference. First operand 1957 states and 3228 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:34,808 INFO L93 Difference]: Finished difference Result 4145 states and 6798 transitions. [2024-11-28 02:30:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 538 [2024-11-28 02:30:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:34,840 INFO L225 Difference]: With dead ends: 4145 [2024-11-28 02:30:34,841 INFO L226 Difference]: Without dead ends: 2191 [2024-11-28 02:30:34,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:34,908 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 43 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:34,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 838 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:30:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-11-28 02:30:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2029. [2024-11-28 02:30:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1332 states have (on average 1.4684684684684686) internal successors, (1956), 1332 states have internal predecessors, (1956), 688 states have call successors, (688), 8 states have call predecessors, (688), 8 states have return successors, (688), 688 states have call predecessors, (688), 688 states have call successors, (688) [2024-11-28 02:30:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 3332 transitions. [2024-11-28 02:30:35,536 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 3332 transitions. Word has length 538 [2024-11-28 02:30:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:35,539 INFO L471 AbstractCegarLoop]: Abstraction has 2029 states and 3332 transitions. [2024-11-28 02:30:35,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 3332 transitions. [2024-11-28 02:30:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-28 02:30:35,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:35,547 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:35,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:30:35,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:35,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1573895529, now seen corresponding path program 1 times [2024-11-28 02:30:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:35,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453940505] [2024-11-28 02:30:35,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453940505] [2024-11-28 02:30:36,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453940505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:36,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:36,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:36,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740060250] [2024-11-28 02:30:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:36,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:36,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:36,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:36,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:36,333 INFO L87 Difference]: Start difference. First operand 2029 states and 3332 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:36,942 INFO L93 Difference]: Finished difference Result 5185 states and 8518 transitions. [2024-11-28 02:30:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:30:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 539 [2024-11-28 02:30:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:36,975 INFO L225 Difference]: With dead ends: 5185 [2024-11-28 02:30:36,975 INFO L226 Difference]: Without dead ends: 3159 [2024-11-28 02:30:36,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:36,988 INFO L435 NwaCegarLoop]: 609 mSDtfsCounter, 221 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:36,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1574 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:30:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2024-11-28 02:30:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3141. [2024-11-28 02:30:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 2316 states have (on average 1.531951640759931) internal successors, (3548), 2324 states have internal predecessors, (3548), 808 states have call successors, (808), 16 states have call predecessors, (808), 16 states have return successors, (808), 800 states have call predecessors, (808), 808 states have call successors, (808) [2024-11-28 02:30:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 5164 transitions. [2024-11-28 02:30:37,566 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 5164 transitions. Word has length 539 [2024-11-28 02:30:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:37,568 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 5164 transitions. [2024-11-28 02:30:37,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 5164 transitions. [2024-11-28 02:30:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-28 02:30:37,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:37,576 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:37,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:30:37,577 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:37,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1460154517, now seen corresponding path program 1 times [2024-11-28 02:30:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580405433] [2024-11-28 02:30:37,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:30:39,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:39,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580405433] [2024-11-28 02:30:39,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580405433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:39,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:39,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:30:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622902833] [2024-11-28 02:30:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:39,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:30:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:39,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:30:39,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:30:39,444 INFO L87 Difference]: Start difference. First operand 3141 states and 5164 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:42,143 INFO L93 Difference]: Finished difference Result 13666 states and 22366 transitions. [2024-11-28 02:30:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:30:42,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 539 [2024-11-28 02:30:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:42,243 INFO L225 Difference]: With dead ends: 13666 [2024-11-28 02:30:42,243 INFO L226 Difference]: Without dead ends: 10528 [2024-11-28 02:30:42,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:30:42,266 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 1689 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:42,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 2215 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:30:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2024-11-28 02:30:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 4317. [2024-11-28 02:30:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4317 states, 3324 states have (on average 1.5415162454873645) internal successors, (5124), 3340 states have internal predecessors, (5124), 960 states have call successors, (960), 32 states have call predecessors, (960), 32 states have return successors, (960), 944 states have call predecessors, (960), 960 states have call successors, (960) [2024-11-28 02:30:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 7044 transitions. [2024-11-28 02:30:43,472 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 7044 transitions. Word has length 539 [2024-11-28 02:30:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 4317 states and 7044 transitions. [2024-11-28 02:30:43,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:30:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 7044 transitions. [2024-11-28 02:30:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-28 02:30:43,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:43,486 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:43,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:30:43,487 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:43,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 834329209, now seen corresponding path program 1 times [2024-11-28 02:30:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115491826] [2024-11-28 02:30:43,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 42 proven. 213 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-28 02:30:48,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115491826] [2024-11-28 02:30:48,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115491826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:48,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216261455] [2024-11-28 02:30:48,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:48,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:48,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:30:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:49,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:30:49,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7752 proven. 258 refuted. 0 times theorem prover too weak. 6610 trivial. 0 not checked. [2024-11-28 02:30:52,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 246 proven. 261 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2024-11-28 02:30:53,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216261455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:53,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:53,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-11-28 02:30:53,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804549929] [2024-11-28 02:30:53,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:53,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:30:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:53,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:30:53,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:30:53,407 INFO L87 Difference]: Start difference. First operand 4317 states and 7044 transitions. Second operand has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 5 states have call successors, (202), 3 states have call predecessors, (202), 7 states have return successors, (204), 5 states have call predecessors, (204), 5 states have call successors, (204) [2024-11-28 02:31:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:03,635 INFO L93 Difference]: Finished difference Result 20195 states and 31151 transitions. [2024-11-28 02:31:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 02:31:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 5 states have call successors, (202), 3 states have call predecessors, (202), 7 states have return successors, (204), 5 states have call predecessors, (204), 5 states have call successors, (204) Word has length 540 [2024-11-28 02:31:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:03,767 INFO L225 Difference]: With dead ends: 20195 [2024-11-28 02:31:03,767 INFO L226 Difference]: Without dead ends: 15881 [2024-11-28 02:31:03,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1082 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1694, Invalid=5112, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 02:31:03,792 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 1801 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:03,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1736 Invalid, 2333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [522 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 02:31:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15881 states. [2024-11-28 02:31:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15881 to 10981. [2024-11-28 02:31:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10981 states, 8836 states have (on average 1.5228610230873698) internal successors, (13456), 8900 states have internal predecessors, (13456), 1960 states have call successors, (1960), 184 states have call predecessors, (1960), 184 states have return successors, (1960), 1896 states have call predecessors, (1960), 1960 states have call successors, (1960) [2024-11-28 02:31:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10981 states to 10981 states and 17376 transitions. [2024-11-28 02:31:06,089 INFO L78 Accepts]: Start accepts. Automaton has 10981 states and 17376 transitions. Word has length 540 [2024-11-28 02:31:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:06,091 INFO L471 AbstractCegarLoop]: Abstraction has 10981 states and 17376 transitions. [2024-11-28 02:31:06,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 5 states have call successors, (202), 3 states have call predecessors, (202), 7 states have return successors, (204), 5 states have call predecessors, (204), 5 states have call successors, (204) [2024-11-28 02:31:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10981 states and 17376 transitions. [2024-11-28 02:31:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-28 02:31:06,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:06,113 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:06,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:31:06,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:31:06,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -359651907, now seen corresponding path program 1 times [2024-11-28 02:31:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916935734] [2024-11-28 02:31:06,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:31:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:07,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916935734] [2024-11-28 02:31:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916935734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:07,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:07,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:31:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145978342] [2024-11-28 02:31:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:07,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:31:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:07,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:31:07,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:07,103 INFO L87 Difference]: Start difference. First operand 10981 states and 17376 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:31:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:09,421 INFO L93 Difference]: Finished difference Result 27197 states and 43070 transitions. [2024-11-28 02:31:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:31:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 540 [2024-11-28 02:31:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:09,492 INFO L225 Difference]: With dead ends: 27197 [2024-11-28 02:31:09,493 INFO L226 Difference]: Without dead ends: 16219 [2024-11-28 02:31:09,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:09,524 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 224 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:09,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 831 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:31:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16219 states. [2024-11-28 02:31:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16219 to 16217. [2024-11-28 02:31:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16217 states, 13000 states have (on average 1.5187692307692309) internal successors, (19744), 13096 states have internal predecessors, (19744), 2940 states have call successors, (2940), 276 states have call predecessors, (2940), 276 states have return successors, (2940), 2844 states have call predecessors, (2940), 2940 states have call successors, (2940) [2024-11-28 02:31:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16217 states to 16217 states and 25624 transitions. [2024-11-28 02:31:11,701 INFO L78 Accepts]: Start accepts. Automaton has 16217 states and 25624 transitions. Word has length 540 [2024-11-28 02:31:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:11,703 INFO L471 AbstractCegarLoop]: Abstraction has 16217 states and 25624 transitions. [2024-11-28 02:31:11,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-28 02:31:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16217 states and 25624 transitions. [2024-11-28 02:31:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-28 02:31:11,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:11,720 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:11,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:31:11,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:11,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1749337189, now seen corresponding path program 1 times [2024-11-28 02:31:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46333964] [2024-11-28 02:31:11,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:31:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46333964] [2024-11-28 02:31:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46333964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:31:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726175190] [2024-11-28 02:31:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:13,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:31:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:13,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:31:13,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:31:13,049 INFO L87 Difference]: Start difference. First operand 16217 states and 25624 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:31:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:18,802 INFO L93 Difference]: Finished difference Result 45909 states and 72665 transitions. [2024-11-28 02:31:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:31:18,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 540 [2024-11-28 02:31:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:18,962 INFO L225 Difference]: With dead ends: 45909 [2024-11-28 02:31:18,962 INFO L226 Difference]: Without dead ends: 37801 [2024-11-28 02:31:18,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:31:18,992 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 987 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:18,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2221 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:31:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37801 states. [2024-11-28 02:31:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37801 to 37593. [2024-11-28 02:31:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37593 states, 30088 states have (on average 1.5212709385801648) internal successors, (45772), 30312 states have internal predecessors, (45772), 6860 states have call successors, (6860), 644 states have call predecessors, (6860), 644 states have return successors, (6860), 6636 states have call predecessors, (6860), 6860 states have call successors, (6860) [2024-11-28 02:31:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37593 states to 37593 states and 59492 transitions. [2024-11-28 02:31:23,702 INFO L78 Accepts]: Start accepts. Automaton has 37593 states and 59492 transitions. Word has length 540 [2024-11-28 02:31:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:23,704 INFO L471 AbstractCegarLoop]: Abstraction has 37593 states and 59492 transitions. [2024-11-28 02:31:23,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:31:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 37593 states and 59492 transitions. [2024-11-28 02:31:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-28 02:31:23,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:23,718 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:23,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:31:23,718 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:23,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1974812742, now seen corresponding path program 1 times [2024-11-28 02:31:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109290913] [2024-11-28 02:31:23,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-28 02:31:24,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:24,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109290913] [2024-11-28 02:31:24,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109290913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:24,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:24,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:31:24,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999791826] [2024-11-28 02:31:24,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:24,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:31:24,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:24,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:31:24,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:31:24,663 INFO L87 Difference]: Start difference. First operand 37593 states and 59492 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:31:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:29,279 INFO L93 Difference]: Finished difference Result 75487 states and 119349 transitions. [2024-11-28 02:31:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:31:29,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 541 [2024-11-28 02:31:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:29,464 INFO L225 Difference]: With dead ends: 75487 [2024-11-28 02:31:29,464 INFO L226 Difference]: Without dead ends: 37897 [2024-11-28 02:31:29,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:31:29,542 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 1225 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:29,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2215 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:31:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37897 states. [2024-11-28 02:31:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37897 to 37629. [2024-11-28 02:31:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37629 states, 30124 states have (on average 1.5190545744257071) internal successors, (45760), 30348 states have internal predecessors, (45760), 6860 states have call successors, (6860), 644 states have call predecessors, (6860), 644 states have return successors, (6860), 6636 states have call predecessors, (6860), 6860 states have call successors, (6860) [2024-11-28 02:31:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37629 states to 37629 states and 59480 transitions. [2024-11-28 02:31:34,309 INFO L78 Accepts]: Start accepts. Automaton has 37629 states and 59480 transitions. Word has length 541 [2024-11-28 02:31:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:34,310 INFO L471 AbstractCegarLoop]: Abstraction has 37629 states and 59480 transitions. [2024-11-28 02:31:34,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-28 02:31:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 37629 states and 59480 transitions. [2024-11-28 02:31:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-28 02:31:34,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:34,331 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:34,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:31:34,331 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:34,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1309045288, now seen corresponding path program 1 times [2024-11-28 02:31:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276989151] [2024-11-28 02:31:34,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:34,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 66 proven. 189 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-28 02:31:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276989151] [2024-11-28 02:31:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276989151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551578086] [2024-11-28 02:31:35,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:36,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:36,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:36,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:31:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:36,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:31:36,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3489 proven. 33 refuted. 0 times theorem prover too weak. 11098 trivial. 0 not checked. [2024-11-28 02:31:36,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 222 proven. 33 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-28 02:31:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551578086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:37,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 02:31:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370686553] [2024-11-28 02:31:37,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:37,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:31:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:37,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:31:37,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:31:37,670 INFO L87 Difference]: Start difference. First operand 37629 states and 59480 transitions. Second operand has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 4 states have call successors, (183), 2 states have call predecessors, (183), 4 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) [2024-11-28 02:31:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:46,720 INFO L93 Difference]: Finished difference Result 115681 states and 181094 transitions. [2024-11-28 02:31:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:31:46,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 4 states have call successors, (183), 2 states have call predecessors, (183), 4 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) Word has length 541 [2024-11-28 02:31:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:47,003 INFO L225 Difference]: With dead ends: 115681 [2024-11-28 02:31:47,003 INFO L226 Difference]: Without dead ends: 78055 [2024-11-28 02:31:47,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1102 GetRequests, 1080 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:31:47,079 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 1646 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:47,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 1067 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:31:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78055 states. [2024-11-28 02:31:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78055 to 75813. [2024-11-28 02:31:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75813 states, 60664 states have (on average 1.504417776605565) internal successors, (91264), 61112 states have internal predecessors, (91264), 13720 states have call successors, (13720), 1428 states have call predecessors, (13720), 1428 states have return successors, (13720), 13272 states have call predecessors, (13720), 13720 states have call successors, (13720) [2024-11-28 02:31:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75813 states to 75813 states and 118704 transitions. [2024-11-28 02:31:55,778 INFO L78 Accepts]: Start accepts. Automaton has 75813 states and 118704 transitions. Word has length 541 [2024-11-28 02:31:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:55,779 INFO L471 AbstractCegarLoop]: Abstraction has 75813 states and 118704 transitions. [2024-11-28 02:31:55,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 4 states have call successors, (183), 2 states have call predecessors, (183), 4 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) [2024-11-28 02:31:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 75813 states and 118704 transitions. [2024-11-28 02:31:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-28 02:31:55,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:55,801 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:55,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:31:56,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:31:56,006 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:56,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1053681995, now seen corresponding path program 1 times [2024-11-28 02:31:56,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:56,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094831656] [2024-11-28 02:31:56,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:56,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 180 proven. 75 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-28 02:31:57,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094831656] [2024-11-28 02:31:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094831656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:57,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952708816] [2024-11-28 02:31:57,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:57,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:57,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:57,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:57,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55cdb151-a00e-46ad-8dd9-96099c7ad97f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:31:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:57,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:31:57,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6749 proven. 75 refuted. 0 times theorem prover too weak. 7796 trivial. 0 not checked. [2024-11-28 02:31:57,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 180 proven. 75 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-28 02:31:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952708816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:58,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:58,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 02:31:58,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040359498] [2024-11-28 02:31:58,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:58,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:31:58,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:58,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:31:58,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:31:58,366 INFO L87 Difference]: Start difference. First operand 75813 states and 118704 transitions. Second operand has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 11 states have internal predecessors, (207), 6 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (137), 6 states have call predecessors, (137), 6 states have call successors, (137)