./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/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 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:34:20,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:34:21,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:34:21,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:34:21,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:34:21,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:34:21,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:34:21,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:34:21,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:34:21,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:34:21,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:34:21,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:34:21,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:34:21,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:34:21,056 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:34:21,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:34:21,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:34:21,056 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:34:21,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:34:21,058 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:34:21,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:34:21,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:34:21,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:21,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:34:21,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:21,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:34:21,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:34:21,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:34:21,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:34:21,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:34:21,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:34:21,061 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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/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 -> 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b [2024-11-27 20:34:21,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:34:21,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:34:21,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:34:21,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:34:21,383 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:34:21,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-27 20:34:24,295 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/data/67776940a/864dda0e341940e6a357ca05ca946348/FLAGaffe2a07d [2024-11-27 20:34:24,674 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:34:24,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-27 20:34:24,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/data/67776940a/864dda0e341940e6a357ca05ca946348/FLAGaffe2a07d [2024-11-27 20:34:24,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/data/67776940a/864dda0e341940e6a357ca05ca946348 [2024-11-27 20:34:24,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:34:24,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:34:24,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:24,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:34:24,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:34:24,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:24" (1/1) ... [2024-11-27 20:34:24,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bd6cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:24, skipping insertion in model container [2024-11-27 20:34:24,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:34:24" (1/1) ... [2024-11-27 20:34:24,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:34:24,938 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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2024-11-27 20:34:25,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:25,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:34:25,192 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_60993ec1-31f8-4d8f-9ca0-77425fabbda5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2024-11-27 20:34:25,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:34:25,353 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:34:25,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25 WrapperNode [2024-11-27 20:34:25,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:34:25,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:25,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:34:25,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:34:25,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,543 INFO L138 Inliner]: procedures = 26, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 863 [2024-11-27 20:34:25,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:34:25,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:34:25,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:34:25,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:34:25,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,661 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]. [2024-11-27 20:34:25,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:34:25,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:34:25,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:34:25,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:34:25,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (1/1) ... [2024-11-27 20:34:25,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:34:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:25,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:34:25,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:34:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:34:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:34:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:34:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:34:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:34:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:34:26,005 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:34:26,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:34:27,827 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-27 20:34:27,828 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:34:27,859 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:34:27,863 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:34:27,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:27 BoogieIcfgContainer [2024-11-27 20:34:27,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:34:27,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:34:27,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:34:27,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:34:27,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:34:24" (1/3) ... [2024-11-27 20:34:27,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fcff5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:27, skipping insertion in model container [2024-11-27 20:34:27,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:34:25" (2/3) ... [2024-11-27 20:34:27,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fcff5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:34:27, skipping insertion in model container [2024-11-27 20:34:27,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:34:27" (3/3) ... [2024-11-27 20:34:27,880 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2024-11-27 20:34:27,900 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:34:27,903 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-38.i that has 2 procedures, 358 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:34:28,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:34:28,021 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;@2f57d53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:34:28,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:34:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 246 states have (on average 1.5731707317073171) internal successors, (387), 247 states have internal predecessors, (387), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-27 20:34:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:28,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:28,090 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:28,091 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:28,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash -295408479, now seen corresponding path program 1 times [2024-11-27 20:34:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:28,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165362893] [2024-11-27 20:34:28,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2024-11-27 20:34:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165362893] [2024-11-27 20:34:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165362893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170018290] [2024-11-27 20:34:29,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:29,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:29,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:29,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:34:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:29,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:34:29,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2024-11-27 20:34:29,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170018290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:29,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:34:30,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535262943] [2024-11-27 20:34:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:30,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:34:30,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:30,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:34:30,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:34:30,041 INFO L87 Difference]: Start difference. First operand has 358 states, 246 states have (on average 1.5731707317073171) internal successors, (387), 247 states have internal predecessors, (387), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2024-11-27 20:34:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:30,166 INFO L93 Difference]: Finished difference Result 709 states and 1313 transitions. [2024-11-27 20:34:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:34:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) Word has length 697 [2024-11-27 20:34:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:30,178 INFO L225 Difference]: With dead ends: 709 [2024-11-27 20:34:30,179 INFO L226 Difference]: Without dead ends: 354 [2024-11-27 20:34:30,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:34:30,188 INFO L435 NwaCegarLoop]: 597 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, 597 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 [2024-11-27 20:34:30,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:34:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-27 20:34:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2024-11-27 20:34:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 243 states have (on average 1.559670781893004) internal successors, (379), 243 states have internal predecessors, (379), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-27 20:34:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 597 transitions. [2024-11-27 20:34:30,303 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 597 transitions. Word has length 697 [2024-11-27 20:34:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:30,303 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 597 transitions. [2024-11-27 20:34:30,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2024-11-27 20:34:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 597 transitions. [2024-11-27 20:34:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:30,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:30,323 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:30,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:34:30,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:34:30,528 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:30,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1349456401, now seen corresponding path program 1 times [2024-11-27 20:34:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948779209] [2024-11-27 20:34:30,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948779209] [2024-11-27 20:34:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948779209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:31,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671243691] [2024-11-27 20:34:31,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:31,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:31,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:31,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:31,641 INFO L87 Difference]: Start difference. First operand 354 states and 597 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:31,865 INFO L93 Difference]: Finished difference Result 1033 states and 1742 transitions. [2024-11-27 20:34:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:31,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-27 20:34:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:31,879 INFO L225 Difference]: With dead ends: 1033 [2024-11-27 20:34:31,880 INFO L226 Difference]: Without dead ends: 682 [2024-11-27 20:34:31,881 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 [2024-11-27 20:34:31,882 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 516 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:31,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1470 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:34:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-27 20:34:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 440. [2024-11-27 20:34:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 329 states have (on average 1.6200607902735562) internal successors, (533), 329 states have internal predecessors, (533), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-27 20:34:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 751 transitions. [2024-11-27 20:34:31,997 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 751 transitions. Word has length 697 [2024-11-27 20:34:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:32,004 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 751 transitions. [2024-11-27 20:34:32,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 751 transitions. [2024-11-27 20:34:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:32,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:32,037 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:32,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:34:32,038 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:32,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1084291665, now seen corresponding path program 1 times [2024-11-27 20:34:32,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430265267] [2024-11-27 20:34:32,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:32,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:32,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430265267] [2024-11-27 20:34:32,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430265267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:32,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:32,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448907580] [2024-11-27 20:34:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:32,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:32,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:32,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:32,825 INFO L87 Difference]: Start difference. First operand 440 states and 751 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:32,971 INFO L93 Difference]: Finished difference Result 1314 states and 2247 transitions. [2024-11-27 20:34:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:32,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-27 20:34:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:32,986 INFO L225 Difference]: With dead ends: 1314 [2024-11-27 20:34:32,990 INFO L226 Difference]: Without dead ends: 877 [2024-11-27 20:34:32,995 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 [2024-11-27 20:34:32,996 INFO L435 NwaCegarLoop]: 1118 mSDtfsCounter, 585 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:32,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1705 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:34:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-27 20:34:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2024-11-27 20:34:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 652 states have (on average 1.6196319018404908) internal successors, (1056), 652 states have internal predecessors, (1056), 218 states have call successors, (218), 2 states have call predecessors, (218), 2 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2024-11-27 20:34:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1492 transitions. [2024-11-27 20:34:33,119 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1492 transitions. Word has length 697 [2024-11-27 20:34:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:33,124 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1492 transitions. [2024-11-27 20:34:33,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1492 transitions. [2024-11-27 20:34:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:33,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:33,136 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:33,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:34:33,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:33,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1824472237, now seen corresponding path program 1 times [2024-11-27 20:34:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009216516] [2024-11-27 20:34:33,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:33,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009216516] [2024-11-27 20:34:33,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009216516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:33,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:33,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455506526] [2024-11-27 20:34:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:33,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:33,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:33,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:33,658 INFO L87 Difference]: Start difference. First operand 873 states and 1492 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:33,817 INFO L93 Difference]: Finished difference Result 2173 states and 3672 transitions. [2024-11-27 20:34:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-27 20:34:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:33,830 INFO L225 Difference]: With dead ends: 2173 [2024-11-27 20:34:33,830 INFO L226 Difference]: Without dead ends: 1303 [2024-11-27 20:34:33,833 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 [2024-11-27 20:34:33,836 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 339 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:33,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1467 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:34:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-27 20:34:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1299. [2024-11-27 20:34:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 862 states have (on average 1.5243619489559164) internal successors, (1314), 864 states have internal predecessors, (1314), 432 states have call successors, (432), 4 states have call predecessors, (432), 4 states have return successors, (432), 430 states have call predecessors, (432), 432 states have call successors, (432) [2024-11-27 20:34:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 2178 transitions. [2024-11-27 20:34:34,082 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 2178 transitions. Word has length 697 [2024-11-27 20:34:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:34,084 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 2178 transitions. [2024-11-27 20:34:34,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 2178 transitions. [2024-11-27 20:34:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:34,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:34,093 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:34,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:34:34,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:34,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1605617519, now seen corresponding path program 1 times [2024-11-27 20:34:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065006896] [2024-11-27 20:34:34,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:34,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065006896] [2024-11-27 20:34:35,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065006896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:35,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578157088] [2024-11-27 20:34:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:35,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:35,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:35,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:35,117 INFO L87 Difference]: Start difference. First operand 1299 states and 2178 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:35,315 INFO L93 Difference]: Finished difference Result 3477 states and 5860 transitions. [2024-11-27 20:34:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:35,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-27 20:34:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:35,338 INFO L225 Difference]: With dead ends: 3477 [2024-11-27 20:34:35,338 INFO L226 Difference]: Without dead ends: 2181 [2024-11-27 20:34:35,344 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 [2024-11-27 20:34:35,345 INFO L435 NwaCegarLoop]: 1134 mSDtfsCounter, 590 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:35,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1723 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:34:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2024-11-27 20:34:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2167. [2024-11-27 20:34:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1510 states have (on average 1.5589403973509934) internal successors, (2354), 1512 states have internal predecessors, (2354), 650 states have call successors, (650), 6 states have call predecessors, (650), 6 states have return successors, (650), 648 states have call predecessors, (650), 650 states have call successors, (650) [2024-11-27 20:34:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3654 transitions. [2024-11-27 20:34:35,768 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3654 transitions. Word has length 697 [2024-11-27 20:34:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:35,771 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3654 transitions. [2024-11-27 20:34:35,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3654 transitions. [2024-11-27 20:34:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-27 20:34:35,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:35,783 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:35,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:34:35,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:35,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 34174639, now seen corresponding path program 1 times [2024-11-27 20:34:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:35,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974993353] [2024-11-27 20:34:35,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:35,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:37,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974993353] [2024-11-27 20:34:37,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974993353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:37,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:37,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801195486] [2024-11-27 20:34:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:37,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:37,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:37,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:37,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:37,768 INFO L87 Difference]: Start difference. First operand 2167 states and 3654 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:39,104 INFO L93 Difference]: Finished difference Result 8629 states and 14553 transitions. [2024-11-27 20:34:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:39,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 697 [2024-11-27 20:34:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:39,150 INFO L225 Difference]: With dead ends: 8629 [2024-11-27 20:34:39,150 INFO L226 Difference]: Without dead ends: 6465 [2024-11-27 20:34:39,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:34:39,162 INFO L435 NwaCegarLoop]: 591 mSDtfsCounter, 1594 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:39,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2358 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:34:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2024-11-27 20:34:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 4329. [2024-11-27 20:34:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3016 states have (on average 1.5576923076923077) internal successors, (4698), 3020 states have internal predecessors, (4698), 1300 states have call successors, (1300), 12 states have call predecessors, (1300), 12 states have return successors, (1300), 1296 states have call predecessors, (1300), 1300 states have call successors, (1300) [2024-11-27 20:34:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 7298 transitions. [2024-11-27 20:34:40,580 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 7298 transitions. Word has length 697 [2024-11-27 20:34:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:40,583 INFO L471 AbstractCegarLoop]: Abstraction has 4329 states and 7298 transitions. [2024-11-27 20:34:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 7298 transitions. [2024-11-27 20:34:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-27 20:34:40,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:40,595 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:40,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:34:40,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:40,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash 806915875, now seen corresponding path program 1 times [2024-11-27 20:34:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234349082] [2024-11-27 20:34:40,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:41,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:41,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234349082] [2024-11-27 20:34:41,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234349082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:41,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:41,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:41,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580218416] [2024-11-27 20:34:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:41,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:41,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:41,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:41,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:41,827 INFO L87 Difference]: Start difference. First operand 4329 states and 7298 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:43,810 INFO L93 Difference]: Finished difference Result 11283 states and 18793 transitions. [2024-11-27 20:34:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:43,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-27 20:34:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:43,865 INFO L225 Difference]: With dead ends: 11283 [2024-11-27 20:34:43,865 INFO L226 Difference]: Without dead ends: 6957 [2024-11-27 20:34:43,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:43,882 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 813 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:43,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1589 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:34:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2024-11-27 20:34:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 5225. [2024-11-27 20:34:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 3480 states have (on average 1.5195402298850575) internal successors, (5288), 3488 states have internal predecessors, (5288), 1728 states have call successors, (1728), 16 states have call predecessors, (1728), 16 states have return successors, (1728), 1720 states have call predecessors, (1728), 1728 states have call successors, (1728) [2024-11-27 20:34:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 8744 transitions. [2024-11-27 20:34:45,083 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 8744 transitions. Word has length 698 [2024-11-27 20:34:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:45,087 INFO L471 AbstractCegarLoop]: Abstraction has 5225 states and 8744 transitions. [2024-11-27 20:34:45,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 8744 transitions. [2024-11-27 20:34:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-27 20:34:45,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:45,104 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:45,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:34:45,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:45,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 297442785, now seen corresponding path program 1 times [2024-11-27 20:34:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327856620] [2024-11-27 20:34:45,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327856620] [2024-11-27 20:34:46,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327856620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:46,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884694440] [2024-11-27 20:34:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:46,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:46,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:46,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:46,802 INFO L87 Difference]: Start difference. First operand 5225 states and 8744 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:48,804 INFO L93 Difference]: Finished difference Result 15959 states and 26683 transitions. [2024-11-27 20:34:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:48,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-27 20:34:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:48,895 INFO L225 Difference]: With dead ends: 15959 [2024-11-27 20:34:48,895 INFO L226 Difference]: Without dead ends: 10737 [2024-11-27 20:34:48,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:34:48,916 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 619 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:48,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2154 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:34:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2024-11-27 20:34:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 10461. [2024-11-27 20:34:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 6972 states have (on average 1.5186460126219163) internal successors, (10588), 6988 states have internal predecessors, (10588), 3456 states have call successors, (3456), 32 states have call predecessors, (3456), 32 states have return successors, (3456), 3440 states have call predecessors, (3456), 3456 states have call successors, (3456) [2024-11-27 20:34:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 17500 transitions. [2024-11-27 20:34:51,446 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 17500 transitions. Word has length 698 [2024-11-27 20:34:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:51,448 INFO L471 AbstractCegarLoop]: Abstraction has 10461 states and 17500 transitions. [2024-11-27 20:34:51,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:34:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 17500 transitions. [2024-11-27 20:34:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-27 20:34:51,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:51,457 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:51,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:34:51,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:51,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -713674465, now seen corresponding path program 1 times [2024-11-27 20:34:51,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:51,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926112335] [2024-11-27 20:34:51,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:51,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:34:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926112335] [2024-11-27 20:34:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926112335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:56,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:56,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 20:34:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992762920] [2024-11-27 20:34:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:56,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:34:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:56,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:34:56,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:34:56,163 INFO L87 Difference]: Start difference. First operand 10461 states and 17500 transitions. Second operand has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:35:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:28,379 INFO L93 Difference]: Finished difference Result 172093 states and 293860 transitions. [2024-11-27 20:35:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 20:35:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 698 [2024-11-27 20:35:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:29,127 INFO L225 Difference]: With dead ends: 172093 [2024-11-27 20:35:29,127 INFO L226 Difference]: Without dead ends: 161635 [2024-11-27 20:35:29,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=475, Invalid=1247, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 20:35:29,226 INFO L435 NwaCegarLoop]: 1274 mSDtfsCounter, 7881 mSDsluCounter, 15064 mSDsCounter, 0 mSdLazyCounter, 9080 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7881 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 10113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 9080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:29,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7881 Valid, 16338 Invalid, 10113 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1033 Valid, 9080 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2024-11-27 20:35:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161635 states. [2024-11-27 20:35:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161635 to 49981. [2024-11-27 20:35:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49981 states, 39012 states have (on average 1.6223726033015482) internal successors, (63292), 39140 states have internal predecessors, (63292), 10776 states have call successors, (10776), 192 states have call predecessors, (10776), 192 states have return successors, (10776), 10648 states have call predecessors, (10776), 10776 states have call successors, (10776) [2024-11-27 20:35:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49981 states to 49981 states and 84844 transitions. [2024-11-27 20:35:39,258 INFO L78 Accepts]: Start accepts. Automaton has 49981 states and 84844 transitions. Word has length 698 [2024-11-27 20:35:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:39,259 INFO L471 AbstractCegarLoop]: Abstraction has 49981 states and 84844 transitions. [2024-11-27 20:35:39,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:35:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 49981 states and 84844 transitions. [2024-11-27 20:35:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-27 20:35:39,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:39,276 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:39,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:35:39,276 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:39,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 327862707, now seen corresponding path program 1 times [2024-11-27 20:35:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:39,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554580405] [2024-11-27 20:35:39,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:35:40,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554580405] [2024-11-27 20:35:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554580405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738985720] [2024-11-27 20:35:40,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:40,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:40,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:40,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:35:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:41,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:35:41,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2024-11-27 20:35:43,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:35:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 204 proven. 120 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:35:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738985720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:35:44,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:35:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 10 [2024-11-27 20:35:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023253003] [2024-11-27 20:35:44,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:35:44,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:35:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:44,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:35:44,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:35:44,131 INFO L87 Difference]: Start difference. First operand 49981 states and 84844 transitions. Second operand has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) [2024-11-27 20:35:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:48,172 INFO L93 Difference]: Finished difference Result 72884 states and 123362 transitions. [2024-11-27 20:35:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:35:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) Word has length 698 [2024-11-27 20:35:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:48,286 INFO L225 Difference]: With dead ends: 72884 [2024-11-27 20:35:48,287 INFO L226 Difference]: Without dead ends: 22906 [2024-11-27 20:35:48,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1419 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:35:48,378 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 1401 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1013 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:48,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 2375 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1013 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:35:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22906 states. [2024-11-27 20:35:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22906 to 14837. [2024-11-27 20:35:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14837 states, 11943 states have (on average 1.6242987524072678) internal successors, (19399), 11967 states have internal predecessors, (19399), 2781 states have call successors, (2781), 112 states have call predecessors, (2781), 112 states have return successors, (2781), 2757 states have call predecessors, (2781), 2781 states have call successors, (2781) [2024-11-27 20:35:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14837 states to 14837 states and 24961 transitions. [2024-11-27 20:35:51,817 INFO L78 Accepts]: Start accepts. Automaton has 14837 states and 24961 transitions. Word has length 698 [2024-11-27 20:35:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:51,818 INFO L471 AbstractCegarLoop]: Abstraction has 14837 states and 24961 transitions. [2024-11-27 20:35:51,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.4) internal successors, (384), 10 states have internal predecessors, (384), 4 states have call successors, (257), 2 states have call predecessors, (257), 4 states have return successors, (259), 4 states have call predecessors, (259), 4 states have call successors, (259) [2024-11-27 20:35:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 14837 states and 24961 transitions. [2024-11-27 20:35:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-27 20:35:51,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:51,829 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:51,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:35:52,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:35:52,030 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:52,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1604655337, now seen corresponding path program 1 times [2024-11-27 20:35:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761897163] [2024-11-27 20:35:52,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:35:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761897163] [2024-11-27 20:35:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761897163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:35:52,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:35:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:35:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291982704] [2024-11-27 20:35:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:35:52,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:35:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:52,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:35:52,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:35:52,658 INFO L87 Difference]: Start difference. First operand 14837 states and 24961 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:35:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:35:54,988 INFO L93 Difference]: Finished difference Result 28957 states and 48605 transitions. [2024-11-27 20:35:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:35:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2024-11-27 20:35:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:35:55,077 INFO L225 Difference]: With dead ends: 28957 [2024-11-27 20:35:55,078 INFO L226 Difference]: Without dead ends: 14921 [2024-11-27 20:35:55,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:35:55,116 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 377 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:35:55,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1213 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:35:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2024-11-27 20:35:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 14921. [2024-11-27 20:35:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14921 states, 12006 states have (on average 1.618024321172747) internal successors, (19426), 12030 states have internal predecessors, (19426), 2781 states have call successors, (2781), 133 states have call predecessors, (2781), 133 states have return successors, (2781), 2757 states have call predecessors, (2781), 2781 states have call successors, (2781) [2024-11-27 20:35:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 24988 transitions. [2024-11-27 20:35:57,062 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 24988 transitions. Word has length 699 [2024-11-27 20:35:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:35:57,063 INFO L471 AbstractCegarLoop]: Abstraction has 14921 states and 24988 transitions. [2024-11-27 20:35:57,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:35:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 24988 transitions. [2024-11-27 20:35:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-27 20:35:57,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:35:57,071 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:35:57,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:35:57,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:35:57,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:35:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2038384423, now seen corresponding path program 1 times [2024-11-27 20:35:57,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:35:57,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036469053] [2024-11-27 20:35:57,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:35:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:35:58,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:35:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036469053] [2024-11-27 20:35:58,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036469053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:35:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553197941] [2024-11-27 20:35:58,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:35:58,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:35:58,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:35:58,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:35:58,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:35:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:35:58,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:35:58,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:35:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:35:59,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:35:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553197941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:35:59,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:35:59,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2024-11-27 20:35:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649885092] [2024-11-27 20:35:59,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:35:59,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:35:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:35:59,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:35:59,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:35:59,095 INFO L87 Difference]: Start difference. First operand 14921 states and 24988 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:00,322 INFO L93 Difference]: Finished difference Result 15075 states and 25160 transitions. [2024-11-27 20:36:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:36:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) Word has length 699 [2024-11-27 20:36:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:00,368 INFO L225 Difference]: With dead ends: 15075 [2024-11-27 20:36:00,368 INFO L226 Difference]: Without dead ends: 7433 [2024-11-27 20:36:00,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:36:00,389 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 425 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:00,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1221 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:36:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2024-11-27 20:36:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7361. [2024-11-27 20:36:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7361 states, 6117 states have (on average 1.645414418832761) internal successors, (10065), 6125 states have internal predecessors, (10065), 1181 states have call successors, (1181), 62 states have call predecessors, (1181), 62 states have return successors, (1181), 1173 states have call predecessors, (1181), 1181 states have call successors, (1181) [2024-11-27 20:36:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 12427 transitions. [2024-11-27 20:36:01,470 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 12427 transitions. Word has length 699 [2024-11-27 20:36:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:01,471 INFO L471 AbstractCegarLoop]: Abstraction has 7361 states and 12427 transitions. [2024-11-27 20:36:01,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 12427 transitions. [2024-11-27 20:36:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-27 20:36:01,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:01,480 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:01,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:36:01,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:01,681 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:01,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash -696255699, now seen corresponding path program 1 times [2024-11-27 20:36:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:01,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157574333] [2024-11-27 20:36:01,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:36:03,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:03,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157574333] [2024-11-27 20:36:03,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157574333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:03,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632208679] [2024-11-27 20:36:03,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:03,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:03,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:03,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:03,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:36:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:04,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:36:04,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 15489 proven. 300 refuted. 0 times theorem prover too weak. 7755 trivial. 0 not checked. [2024-11-27 20:36:05,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 240 proven. 84 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:36:06,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632208679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:06,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2024-11-27 20:36:06,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708053271] [2024-11-27 20:36:06,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:06,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:36:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:06,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:36:06,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:36:06,829 INFO L87 Difference]: Start difference. First operand 7361 states and 12427 transitions. Second operand has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) [2024-11-27 20:36:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:11,466 INFO L93 Difference]: Finished difference Result 14105 states and 23548 transitions. [2024-11-27 20:36:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 20:36:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) Word has length 699 [2024-11-27 20:36:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:11,502 INFO L225 Difference]: With dead ends: 14105 [2024-11-27 20:36:11,502 INFO L226 Difference]: Without dead ends: 7719 [2024-11-27 20:36:11,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1437 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:36:11,519 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 4623 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 2521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2521 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:11,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4625 Valid, 2199 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2521 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 20:36:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2024-11-27 20:36:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7569. [2024-11-27 20:36:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 6289 states have (on average 1.6264906980442042) internal successors, (10229), 6297 states have internal predecessors, (10229), 1181 states have call successors, (1181), 98 states have call predecessors, (1181), 98 states have return successors, (1181), 1173 states have call predecessors, (1181), 1181 states have call successors, (1181) [2024-11-27 20:36:12,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 12591 transitions. [2024-11-27 20:36:12,583 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 12591 transitions. Word has length 699 [2024-11-27 20:36:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:12,584 INFO L471 AbstractCegarLoop]: Abstraction has 7569 states and 12591 transitions. [2024-11-27 20:36:12,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 25.25) internal successors, (404), 17 states have internal predecessors, (404), 7 states have call successors, (291), 3 states have call predecessors, (291), 6 states have return successors, (292), 7 states have call predecessors, (292), 7 states have call successors, (292) [2024-11-27 20:36:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 12591 transitions. [2024-11-27 20:36:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-27 20:36:12,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:12,599 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:12,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:36:12,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:36:12,800 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:12,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1552797633, now seen corresponding path program 1 times [2024-11-27 20:36:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535378033] [2024-11-27 20:36:12,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:36:13,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:13,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535378033] [2024-11-27 20:36:13,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535378033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:36:13,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:36:13,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:36:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255887996] [2024-11-27 20:36:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:36:13,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:36:13,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:13,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:36:13,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:36:13,182 INFO L87 Difference]: Start difference. First operand 7569 states and 12591 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:14,222 INFO L93 Difference]: Finished difference Result 20770 states and 34733 transitions. [2024-11-27 20:36:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:36:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 701 [2024-11-27 20:36:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:14,259 INFO L225 Difference]: With dead ends: 20770 [2024-11-27 20:36:14,260 INFO L226 Difference]: Without dead ends: 13492 [2024-11-27 20:36:14,275 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 [2024-11-27 20:36:14,280 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 358 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:14,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1460 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:36:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2024-11-27 20:36:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13482. [2024-11-27 20:36:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13482 states, 11602 states have (on average 1.635666264437166) internal successors, (18977), 11626 states have internal predecessors, (18977), 1733 states have call successors, (1733), 146 states have call predecessors, (1733), 146 states have return successors, (1733), 1709 states have call predecessors, (1733), 1733 states have call successors, (1733) [2024-11-27 20:36:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13482 states to 13482 states and 22443 transitions. [2024-11-27 20:36:15,447 INFO L78 Accepts]: Start accepts. Automaton has 13482 states and 22443 transitions. Word has length 701 [2024-11-27 20:36:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:15,448 INFO L471 AbstractCegarLoop]: Abstraction has 13482 states and 22443 transitions. [2024-11-27 20:36:15,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 13482 states and 22443 transitions. [2024-11-27 20:36:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-27 20:36:15,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:15,455 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:15,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:36:15,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:15,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1593472383, now seen corresponding path program 1 times [2024-11-27 20:36:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122588959] [2024-11-27 20:36:15,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:36:16,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:16,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122588959] [2024-11-27 20:36:16,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122588959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:36:16,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:36:16,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:36:16,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111406083] [2024-11-27 20:36:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:36:16,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:36:16,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:16,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:36:16,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:36:16,438 INFO L87 Difference]: Start difference. First operand 13482 states and 22443 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:18,496 INFO L93 Difference]: Finished difference Result 40565 states and 67631 transitions. [2024-11-27 20:36:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:36:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 701 [2024-11-27 20:36:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:18,553 INFO L225 Difference]: With dead ends: 40565 [2024-11-27 20:36:18,553 INFO L226 Difference]: Without dead ends: 28695 [2024-11-27 20:36:18,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:36:18,577 INFO L435 NwaCegarLoop]: 1422 mSDtfsCounter, 1105 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:18,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 3304 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:36:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28695 states. [2024-11-27 20:36:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28695 to 24265. [2024-11-27 20:36:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24265 states, 21808 states have (on average 1.6714508437270725) internal successors, (36451), 21824 states have internal predecessors, (36451), 2253 states have call successors, (2253), 203 states have call predecessors, (2253), 203 states have return successors, (2253), 2237 states have call predecessors, (2253), 2253 states have call successors, (2253) [2024-11-27 20:36:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24265 states to 24265 states and 40957 transitions. [2024-11-27 20:36:19,933 INFO L78 Accepts]: Start accepts. Automaton has 24265 states and 40957 transitions. Word has length 701 [2024-11-27 20:36:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:19,934 INFO L471 AbstractCegarLoop]: Abstraction has 24265 states and 40957 transitions. [2024-11-27 20:36:19,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 24265 states and 40957 transitions. [2024-11-27 20:36:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-27 20:36:19,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:19,940 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:19,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:36:19,941 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:19,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2016174209, now seen corresponding path program 1 times [2024-11-27 20:36:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:19,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006474354] [2024-11-27 20:36:19,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:19,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 114 proven. 210 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:36:21,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006474354] [2024-11-27 20:36:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006474354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99528020] [2024-11-27 20:36:21,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:21,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:21,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:21,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:36:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:21,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:36:21,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11374 proven. 195 refuted. 0 times theorem prover too weak. 11975 trivial. 0 not checked. [2024-11-27 20:36:22,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 129 proven. 195 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2024-11-27 20:36:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99528020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:23,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-27 20:36:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623831088] [2024-11-27 20:36:23,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:23,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:36:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:23,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:36:23,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:36:23,646 INFO L87 Difference]: Start difference. First operand 24265 states and 40957 transitions. Second operand has 9 states, 9 states have (on average 32.111111111111114) internal successors, (289), 9 states have internal predecessors, (289), 4 states have call successors, (283), 2 states have call predecessors, (283), 4 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) [2024-11-27 20:36:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:27,085 INFO L93 Difference]: Finished difference Result 67342 states and 113010 transitions. [2024-11-27 20:36:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 20:36:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 32.111111111111114) internal successors, (289), 9 states have internal predecessors, (289), 4 states have call successors, (283), 2 states have call predecessors, (283), 4 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) Word has length 701 [2024-11-27 20:36:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:27,153 INFO L225 Difference]: With dead ends: 67342 [2024-11-27 20:36:27,153 INFO L226 Difference]: Without dead ends: 43928 [2024-11-27 20:36:27,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1399 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:36:27,172 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 1143 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:27,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1581 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:36:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43928 states. [2024-11-27 20:36:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43928 to 37976. [2024-11-27 20:36:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37976 states, 33133 states have (on average 1.6174810611776778) internal successors, (53592), 33165 states have internal predecessors, (53592), 4397 states have call successors, (4397), 445 states have call predecessors, (4397), 445 states have return successors, (4397), 4365 states have call predecessors, (4397), 4397 states have call successors, (4397) [2024-11-27 20:36:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37976 states to 37976 states and 62386 transitions. [2024-11-27 20:36:29,636 INFO L78 Accepts]: Start accepts. Automaton has 37976 states and 62386 transitions. Word has length 701 [2024-11-27 20:36:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:29,637 INFO L471 AbstractCegarLoop]: Abstraction has 37976 states and 62386 transitions. [2024-11-27 20:36:29,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.111111111111114) internal successors, (289), 9 states have internal predecessors, (289), 4 states have call successors, (283), 2 states have call predecessors, (283), 4 states have return successors, (284), 4 states have call predecessors, (284), 4 states have call successors, (284) [2024-11-27 20:36:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 37976 states and 62386 transitions. [2024-11-27 20:36:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2024-11-27 20:36:29,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:29,644 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:29,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:36:29,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60993ec1-31f8-4d8f-9ca0-77425fabbda5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:36:29,845 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:29,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1170050683, now seen corresponding path program 1 times [2024-11-27 20:36:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764168876] [2024-11-27 20:36:29,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:36:30,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764168876] [2024-11-27 20:36:30,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764168876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:36:30,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:36:30,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:36:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480129113] [2024-11-27 20:36:30,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:36:30,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:36:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:30,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:36:30,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:36:30,148 INFO L87 Difference]: Start difference. First operand 37976 states and 62386 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:35,904 INFO L93 Difference]: Finished difference Result 109388 states and 179692 transitions. [2024-11-27 20:36:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:36:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 703 [2024-11-27 20:36:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:36,050 INFO L225 Difference]: With dead ends: 109388 [2024-11-27 20:36:36,050 INFO L226 Difference]: Without dead ends: 74210 [2024-11-27 20:36:36,104 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 [2024-11-27 20:36:36,105 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 532 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:36,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1464 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:36:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74210 states. [2024-11-27 20:36:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74210 to 74208. [2024-11-27 20:36:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74208 states, 64645 states have (on average 1.612313403975559) internal successors, (104228), 64709 states have internal predecessors, (104228), 8685 states have call successors, (8685), 877 states have call predecessors, (8685), 877 states have return successors, (8685), 8621 states have call predecessors, (8685), 8685 states have call successors, (8685) [2024-11-27 20:36:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74208 states to 74208 states and 121598 transitions. [2024-11-27 20:36:41,169 INFO L78 Accepts]: Start accepts. Automaton has 74208 states and 121598 transitions. Word has length 703 [2024-11-27 20:36:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:41,170 INFO L471 AbstractCegarLoop]: Abstraction has 74208 states and 121598 transitions. [2024-11-27 20:36:41,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2024-11-27 20:36:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 74208 states and 121598 transitions. [2024-11-27 20:36:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-11-27 20:36:41,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:41,187 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:36:41,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:36:41,188 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:41,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1806682361, now seen corresponding path program 1 times [2024-11-27 20:36:41,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:41,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221315744] [2024-11-27 20:36:41,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:41,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2024-11-27 20:36:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221315744] [2024-11-27 20:36:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221315744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:36:41,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:36:41,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:36:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103178982] [2024-11-27 20:36:41,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:36:41,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:36:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:41,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:36:41,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:36:41,465 INFO L87 Difference]: Start difference. First operand 74208 states and 121598 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109)