./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.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_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3fff67c56135375ffd751199deaa864a3ed3a59a2eb1eeee2e19554b4f47694 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:08:33,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:08:33,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:08:33,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:08:33,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:08:33,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:08:33,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:08:33,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:08:33,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:08:33,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:08:33,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:08:33,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:08:33,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:08:33,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:08:33,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:08:33,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:08:33,920 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:33,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:33,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:33,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:08:33,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:08:33,921 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_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3fff67c56135375ffd751199deaa864a3ed3a59a2eb1eeee2e19554b4f47694 [2024-12-02 13:08:34,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:08:34,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:08:34,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:08:34,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:08:34,174 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:08:34,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-12-02 13:08:36,854 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/data/a25a30c42/c41ba243080042febbede33871a93b3b/FLAGd00231c15 [2024-12-02 13:08:37,068 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:08:37,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-12-02 13:08:37,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/data/a25a30c42/c41ba243080042febbede33871a93b3b/FLAGd00231c15 [2024-12-02 13:08:37,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/data/a25a30c42/c41ba243080042febbede33871a93b3b [2024-12-02 13:08:37,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:08:37,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:08:37,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:37,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:08:37,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:08:37,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761084a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37, skipping insertion in model container [2024-12-02 13:08:37,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:08:37,526 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_241e672f-26fa-4764-821c-2c736d965751/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i[919,932] [2024-12-02 13:08:37,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:37,609 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:08:37,616 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_241e672f-26fa-4764-821c-2c736d965751/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i[919,932] [2024-12-02 13:08:37,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:37,665 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:08:37,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37 WrapperNode [2024-12-02 13:08:37,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:37,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:37,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:08:37,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:08:37,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,720 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 297 [2024-12-02 13:08:37,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:37,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:08:37,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:08:37,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:08:37,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,749 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 13:08:37,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,760 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:08:37,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:08:37,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:08:37,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:08:37,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (1/1) ... [2024-12-02 13:08:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:37,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:08:37,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:08:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:08:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:08:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:08:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:08:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:08:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:08:37,888 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:08:37,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:08:38,320 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-12-02 13:08:38,320 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:08:38,339 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:08:38,339 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:08:38,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:38 BoogieIcfgContainer [2024-12-02 13:08:38,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:08:38,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:08:38,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:08:38,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:08:38,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:37" (1/3) ... [2024-12-02 13:08:38,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511150f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:38, skipping insertion in model container [2024-12-02 13:08:38,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:37" (2/3) ... [2024-12-02 13:08:38,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511150f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:38, skipping insertion in model container [2024-12-02 13:08:38,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:38" (3/3) ... [2024-12-02 13:08:38,349 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-12-02 13:08:38,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:08:38,366 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i that has 2 procedures, 127 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:08:38,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:08:38,428 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;@494b0c6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:08:38,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:08:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 91 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 13:08:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 13:08:38,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:38,446 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:38,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:38,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 303211599, now seen corresponding path program 1 times [2024-12-02 13:08:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849817722] [2024-12-02 13:08:38,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-12-02 13:08:38,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849817722] [2024-12-02 13:08:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849817722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554943055] [2024-12-02 13:08:38,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:38,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:38,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:08:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:38,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:08:38,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-12-02 13:08:38,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554943055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:38,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:08:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63151747] [2024-12-02 13:08:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:38,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:08:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:39,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:08:39,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:08:39,008 INFO L87 Difference]: Start difference. First operand has 127 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 91 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:08:39,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:39,033 INFO L93 Difference]: Finished difference Result 247 states and 424 transitions. [2024-12-02 13:08:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:08:39,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 219 [2024-12-02 13:08:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:39,040 INFO L225 Difference]: With dead ends: 247 [2024-12-02 13:08:39,041 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 13:08:39,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:08:39,045 INFO L435 NwaCegarLoop]: 191 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, 191 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:39,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 13:08:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-12-02 13:08:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 87 states have internal predecessors, (123), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 13:08:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 191 transitions. [2024-12-02 13:08:39,086 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 191 transitions. Word has length 219 [2024-12-02 13:08:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:39,087 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 191 transitions. [2024-12-02 13:08:39,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:08:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 191 transitions. [2024-12-02 13:08:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 13:08:39,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:39,092 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:39,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:08:39,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241e672f-26fa-4764-821c-2c736d965751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 13:08:39,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:39,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1416959721, now seen corresponding path program 1 times [2024-12-02 13:08:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:39,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028535692] [2024-12-02 13:08:39,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:08:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028535692] [2024-12-02 13:08:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028535692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:39,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:39,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:08:39,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574677990] [2024-12-02 13:08:39,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:39,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:08:39,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:39,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:08:39,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:08:39,880 INFO L87 Difference]: Start difference. First operand 123 states and 191 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:08:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:40,111 INFO L93 Difference]: Finished difference Result 364 states and 568 transitions. [2024-12-02 13:08:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:08:40,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-12-02 13:08:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:40,116 INFO L225 Difference]: With dead ends: 364 [2024-12-02 13:08:40,116 INFO L226 Difference]: Without dead ends: 244 [2024-12-02 13:08:40,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:08:40,118 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 127 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:40,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 550 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:08:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-12-02 13:08:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 184. [2024-12-02 13:08:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 113 states have internal predecessors, (149), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 13:08:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 285 transitions. [2024-12-02 13:08:40,149 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 285 transitions. Word has length 219 [2024-12-02 13:08:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:40,150 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 285 transitions. [2024-12-02 13:08:40,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:08:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 285 transitions. [2024-12-02 13:08:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:08:40,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:40,154 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:08:40,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:08:40,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:40,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1252368267, now seen corresponding path program 1 times [2024-12-02 13:08:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539438706] [2024-12-02 13:08:40,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:08:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539438706] [2024-12-02 13:08:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539438706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:08:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846807515] [2024-12-02 13:08:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:57,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:08:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:57,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:08:57,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:08:57,858 INFO L87 Difference]: Start difference. First operand 184 states and 285 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:09:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:02,447 INFO L93 Difference]: Finished difference Result 535 states and 825 transitions. [2024-12-02 13:09:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 13:09:02,448 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-12-02 13:09:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:02,451 INFO L225 Difference]: With dead ends: 535 [2024-12-02 13:09:02,452 INFO L226 Difference]: Without dead ends: 415 [2024-12-02 13:09:02,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2024-12-02 13:09:02,453 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 2047 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:02,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1116 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 13:09:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-12-02 13:09:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 238. [2024-12-02 13:09:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.406060606060606) internal successors, (232), 165 states have internal predecessors, (232), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 13:09:02,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 368 transitions. [2024-12-02 13:09:02,484 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 368 transitions. Word has length 220 [2024-12-02 13:09:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:02,485 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 368 transitions. [2024-12-02 13:09:02,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:09:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 368 transitions. [2024-12-02 13:09:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:09:02,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:02,489 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:09:02,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:09:02,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:02,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash -27495411, now seen corresponding path program 1 times [2024-12-02 13:09:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501500934] [2024-12-02 13:09:02,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:09:02,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:02,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501500934] [2024-12-02 13:09:02,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501500934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:02,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:02,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:09:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025865163] [2024-12-02 13:09:02,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:02,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:09:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:02,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:09:02,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:09:02,597 INFO L87 Difference]: Start difference. First operand 238 states and 368 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:09:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:02,643 INFO L93 Difference]: Finished difference Result 417 states and 647 transitions. [2024-12-02 13:09:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:09:02,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:09:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:02,647 INFO L225 Difference]: With dead ends: 417 [2024-12-02 13:09:02,647 INFO L226 Difference]: Without dead ends: 292 [2024-12-02 13:09:02,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:09:02,649 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 87 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:02,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 390 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:09:02,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-12-02 13:09:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 280. [2024-12-02 13:09:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 198 states have (on average 1.398989898989899) internal successors, (277), 199 states have internal predecessors, (277), 76 states have call successors, (76), 5 states have call predecessors, (76), 5 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 13:09:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 429 transitions. [2024-12-02 13:09:02,680 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 429 transitions. Word has length 220 [2024-12-02 13:09:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:02,681 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 429 transitions. [2024-12-02 13:09:02,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:09:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 429 transitions. [2024-12-02 13:09:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:09:02,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:02,684 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:09:02,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:09:02,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:02,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 280542157, now seen corresponding path program 1 times [2024-12-02 13:09:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634412308] [2024-12-02 13:09:02,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:09:17,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:17,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634412308] [2024-12-02 13:09:17,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634412308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:17,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:17,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:09:17,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243149373] [2024-12-02 13:09:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:17,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:09:17,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:17,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:09:17,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:09:17,659 INFO L87 Difference]: Start difference. First operand 280 states and 429 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:09:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:21,355 INFO L93 Difference]: Finished difference Result 694 states and 1056 transitions. [2024-12-02 13:09:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:09:21,356 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-12-02 13:09:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:21,358 INFO L225 Difference]: With dead ends: 694 [2024-12-02 13:09:21,359 INFO L226 Difference]: Without dead ends: 531 [2024-12-02 13:09:21,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 13:09:21,360 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 1909 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:21,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 1083 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 13:09:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-12-02 13:09:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 318. [2024-12-02 13:09:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 234 states have (on average 1.4102564102564104) internal successors, (330), 235 states have internal predecessors, (330), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 13:09:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 482 transitions. [2024-12-02 13:09:21,386 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 482 transitions. Word has length 220 [2024-12-02 13:09:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:21,386 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 482 transitions. [2024-12-02 13:09:21,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:09:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 482 transitions. [2024-12-02 13:09:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:09:21,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:21,389 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:09:21,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:09:21,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:21,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1866161803, now seen corresponding path program 1 times [2024-12-02 13:09:21,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058789226] [2024-12-02 13:09:21,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:09:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058789226] [2024-12-02 13:09:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058789226] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 13:09:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080633467] [2024-12-02 13:09:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:42,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:09:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:42,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:09:42,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:09:42,270 INFO L87 Difference]: Start difference. First operand 318 states and 482 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:09:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:44,204 INFO L93 Difference]: Finished difference Result 890 states and 1369 transitions. [2024-12-02 13:09:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 13:09:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:09:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:44,208 INFO L225 Difference]: With dead ends: 890 [2024-12-02 13:09:44,208 INFO L226 Difference]: Without dead ends: 727 [2024-12-02 13:09:44,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:09:44,210 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 674 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:44,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 916 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 13:09:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-12-02 13:09:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 346. [2024-12-02 13:09:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 262 states have (on average 1.4274809160305344) internal successors, (374), 263 states have internal predecessors, (374), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 13:09:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 526 transitions. [2024-12-02 13:09:44,228 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 526 transitions. Word has length 220 [2024-12-02 13:09:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:44,229 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 526 transitions. [2024-12-02 13:09:44,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:09:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 526 transitions. [2024-12-02 13:09:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:09:44,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:44,231 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:09:44,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:09:44,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:44,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2120767925, now seen corresponding path program 1 times [2024-12-02 13:09:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454566967] [2024-12-02 13:09:44,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:11:22,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:22,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454566967] [2024-12-02 13:11:22,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454566967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:22,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 13:11:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442999588] [2024-12-02 13:11:22,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:22,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:11:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:22,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:11:22,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:11:22,884 INFO L87 Difference]: Start difference. First operand 346 states and 526 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:11:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:45,867 INFO L93 Difference]: Finished difference Result 1018 states and 1564 transitions. [2024-12-02 13:11:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 13:11:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-12-02 13:11:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:45,871 INFO L225 Difference]: With dead ends: 1018 [2024-12-02 13:11:45,871 INFO L226 Difference]: Without dead ends: 855 [2024-12-02 13:11:45,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 13:11:45,873 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 2085 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:45,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 1506 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 13:11:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-12-02 13:11:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 542. [2024-12-02 13:11:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 420 states have (on average 1.4452380952380952) internal successors, (607), 421 states have internal predecessors, (607), 110 states have call successors, (110), 11 states have call predecessors, (110), 11 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 13:11:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 827 transitions. [2024-12-02 13:11:45,906 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 827 transitions. Word has length 220 [2024-12-02 13:11:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:45,907 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 827 transitions. [2024-12-02 13:11:45,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:11:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 827 transitions. [2024-12-02 13:11:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:11:45,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:45,909 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:45,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:11:45,909 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:45,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1713602549, now seen corresponding path program 1 times [2024-12-02 13:11:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:45,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804031445] [2024-12-02 13:11:45,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:45,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:12:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:12:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:12:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804031445] [2024-12-02 13:12:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804031445] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:12:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:12:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 13:12:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787590284] [2024-12-02 13:12:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:12:05,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:12:05,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:12:05,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:12:05,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:12:05,554 INFO L87 Difference]: Start difference. First operand 542 states and 827 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:12:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:12:08,345 INFO L93 Difference]: Finished difference Result 1465 states and 2242 transitions. [2024-12-02 13:12:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:12:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:12:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:12:08,352 INFO L225 Difference]: With dead ends: 1465 [2024-12-02 13:12:08,352 INFO L226 Difference]: Without dead ends: 1302 [2024-12-02 13:12:08,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:12:08,353 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1102 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:12:08,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1202 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:12:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-12-02 13:12:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 690. [2024-12-02 13:12:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 529 states have (on average 1.4272211720226844) internal successors, (755), 530 states have internal predecessors, (755), 144 states have call successors, (144), 16 states have call predecessors, (144), 16 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:12:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1043 transitions. [2024-12-02 13:12:08,417 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1043 transitions. Word has length 220 [2024-12-02 13:12:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:12:08,418 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1043 transitions. [2024-12-02 13:12:08,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:12:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1043 transitions. [2024-12-02 13:12:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:12:08,419 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:12:08,420 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:12:08,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:12:08,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:12:08,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:12:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 180054665, now seen corresponding path program 1 times [2024-12-02 13:12:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:12:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570559393] [2024-12-02 13:12:08,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:12:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:12:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:12:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:12:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:12:34,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570559393] [2024-12-02 13:12:34,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570559393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:12:34,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:12:34,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:12:34,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398939713] [2024-12-02 13:12:34,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:12:34,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:12:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:12:34,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:12:34,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:12:34,871 INFO L87 Difference]: Start difference. First operand 690 states and 1043 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:12:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:12:39,845 INFO L93 Difference]: Finished difference Result 1526 states and 2342 transitions. [2024-12-02 13:12:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 13:12:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:12:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:12:39,849 INFO L225 Difference]: With dead ends: 1526 [2024-12-02 13:12:39,849 INFO L226 Difference]: Without dead ends: 1363 [2024-12-02 13:12:39,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 13:12:39,850 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 2232 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:12:39,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 1454 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:12:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-12-02 13:12:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 695. [2024-12-02 13:12:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 534 states have (on average 1.4269662921348314) internal successors, (762), 535 states have internal predecessors, (762), 144 states have call successors, (144), 16 states have call predecessors, (144), 16 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:12:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1050 transitions. [2024-12-02 13:12:39,920 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1050 transitions. Word has length 220 [2024-12-02 13:12:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:12:39,920 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1050 transitions. [2024-12-02 13:12:39,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:12:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1050 transitions. [2024-12-02 13:12:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:12:39,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:12:39,922 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:12:39,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:12:39,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:12:39,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:12:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash 499396875, now seen corresponding path program 1 times [2024-12-02 13:12:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:12:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623473592] [2024-12-02 13:12:39,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:12:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:12:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:12:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:12:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:12:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623473592] [2024-12-02 13:12:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623473592] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:12:50,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:12:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:12:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659150921] [2024-12-02 13:12:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:12:50,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:12:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:12:50,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:12:50,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:12:50,924 INFO L87 Difference]: Start difference. First operand 695 states and 1050 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:12:52,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:12:52,652 INFO L93 Difference]: Finished difference Result 1458 states and 2182 transitions. [2024-12-02 13:12:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:12:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 220 [2024-12-02 13:12:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:12:52,655 INFO L225 Difference]: With dead ends: 1458 [2024-12-02 13:12:52,655 INFO L226 Difference]: Without dead ends: 950 [2024-12-02 13:12:52,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:12:52,657 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 551 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:12:52,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1040 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:12:52,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-12-02 13:12:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 775. [2024-12-02 13:12:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 611 states have (on average 1.4320785597381342) internal successors, (875), 612 states have internal predecessors, (875), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:12:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1163 transitions. [2024-12-02 13:12:52,717 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1163 transitions. Word has length 220 [2024-12-02 13:12:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:12:52,718 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1163 transitions. [2024-12-02 13:12:52,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:12:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1163 transitions. [2024-12-02 13:12:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:12:52,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:12:52,720 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:12:52,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:12:52,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:12:52,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:12:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1494747831, now seen corresponding path program 1 times [2024-12-02 13:12:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:12:52,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045901359] [2024-12-02 13:12:52,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:12:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:12:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:13:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:13:08,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:13:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045901359] [2024-12-02 13:13:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045901359] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:13:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:13:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 13:13:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900103686] [2024-12-02 13:13:08,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:13:08,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:13:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:13:08,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:13:08,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:13:08,882 INFO L87 Difference]: Start difference. First operand 775 states and 1163 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:13:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:13:10,462 INFO L93 Difference]: Finished difference Result 1955 states and 2952 transitions. [2024-12-02 13:13:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:13:10,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:13:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:13:10,466 INFO L225 Difference]: With dead ends: 1955 [2024-12-02 13:13:10,466 INFO L226 Difference]: Without dead ends: 1367 [2024-12-02 13:13:10,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:13:10,467 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 623 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:13:10,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1264 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:13:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2024-12-02 13:13:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 769. [2024-12-02 13:13:10,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 605 states have (on average 1.4330578512396694) internal successors, (867), 606 states have internal predecessors, (867), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:13:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1155 transitions. [2024-12-02 13:13:10,525 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1155 transitions. Word has length 220 [2024-12-02 13:13:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:13:10,525 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1155 transitions. [2024-12-02 13:13:10,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:13:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1155 transitions. [2024-12-02 13:13:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:13:10,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:13:10,528 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:13:10,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:13:10,528 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:13:10,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:13:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2000175309, now seen corresponding path program 1 times [2024-12-02 13:13:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:13:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458471820] [2024-12-02 13:13:10,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:13:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:13:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:13:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:13:37,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:13:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458471820] [2024-12-02 13:13:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458471820] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:13:37,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:13:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:13:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377282402] [2024-12-02 13:13:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:13:37,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:13:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:13:37,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:13:37,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:13:37,557 INFO L87 Difference]: Start difference. First operand 769 states and 1155 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:13:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:13:45,879 INFO L93 Difference]: Finished difference Result 1686 states and 2562 transitions. [2024-12-02 13:13:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 13:13:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-12-02 13:13:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:13:45,885 INFO L225 Difference]: With dead ends: 1686 [2024-12-02 13:13:45,885 INFO L226 Difference]: Without dead ends: 1275 [2024-12-02 13:13:45,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:13:45,887 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1233 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:13:45,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1513 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 13:13:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-12-02 13:13:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 809. [2024-12-02 13:13:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 645 states have (on average 1.426356589147287) internal successors, (920), 646 states have internal predecessors, (920), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:13:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1208 transitions. [2024-12-02 13:13:45,954 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1208 transitions. Word has length 220 [2024-12-02 13:13:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:13:45,954 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1208 transitions. [2024-12-02 13:13:45,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:13:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1208 transitions. [2024-12-02 13:13:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:13:45,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:13:45,956 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:13:45,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:13:45,956 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:13:45,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:13:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -607762933, now seen corresponding path program 1 times [2024-12-02 13:13:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:13:45,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551752109] [2024-12-02 13:13:45,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:13:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:13:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:13:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:13:54,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:13:54,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551752109] [2024-12-02 13:13:54,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551752109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:13:54,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:13:54,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 13:13:54,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351072618] [2024-12-02 13:13:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:13:54,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:13:54,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:13:54,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:13:54,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:13:54,575 INFO L87 Difference]: Start difference. First operand 809 states and 1208 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:13:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:13:57,899 INFO L93 Difference]: Finished difference Result 1642 states and 2503 transitions. [2024-12-02 13:13:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:13:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:13:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:13:57,902 INFO L225 Difference]: With dead ends: 1642 [2024-12-02 13:13:57,902 INFO L226 Difference]: Without dead ends: 1456 [2024-12-02 13:13:57,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:13:57,903 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 923 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:13:57,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1386 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 13:13:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2024-12-02 13:13:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 815. [2024-12-02 13:13:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 651 states have (on average 1.4270353302611367) internal successors, (929), 652 states have internal predecessors, (929), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 13:13:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1217 transitions. [2024-12-02 13:13:57,940 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1217 transitions. Word has length 220 [2024-12-02 13:13:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:13:57,940 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1217 transitions. [2024-12-02 13:13:57,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:13:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1217 transitions. [2024-12-02 13:13:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:13:57,941 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:13:57,942 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:13:57,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:13:57,942 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:13:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:13:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1579589043, now seen corresponding path program 1 times [2024-12-02 13:13:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:13:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475962164] [2024-12-02 13:13:57,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:13:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:13:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:14:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:14:56,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:14:56,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475962164] [2024-12-02 13:14:56,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475962164] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:14:56,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:14:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 13:14:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620724286] [2024-12-02 13:14:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:14:56,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:14:56,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:14:56,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:14:56,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:14:56,256 INFO L87 Difference]: Start difference. First operand 815 states and 1217 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:14:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:14:58,794 INFO L93 Difference]: Finished difference Result 1767 states and 2672 transitions. [2024-12-02 13:14:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:14:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:14:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:14:58,799 INFO L225 Difference]: With dead ends: 1767 [2024-12-02 13:14:58,799 INFO L226 Difference]: Without dead ends: 1604 [2024-12-02 13:14:58,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:14:58,800 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 796 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:14:58,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1493 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:14:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2024-12-02 13:14:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1003. [2024-12-02 13:14:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 799 states have (on average 1.4192740926157696) internal successors, (1134), 800 states have internal predecessors, (1134), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 13:14:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1490 transitions. [2024-12-02 13:14:58,860 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1490 transitions. Word has length 220 [2024-12-02 13:14:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:14:58,860 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1490 transitions. [2024-12-02 13:14:58,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:14:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1490 transitions. [2024-12-02 13:14:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:14:58,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:14:58,862 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:14:58,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:14:58,862 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:14:58,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:14:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash 6030603, now seen corresponding path program 1 times [2024-12-02 13:14:58,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:14:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694274039] [2024-12-02 13:14:58,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:14:58,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:14:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:15:14,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:14,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694274039] [2024-12-02 13:15:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694274039] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:14,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 13:15:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67655402] [2024-12-02 13:15:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:14,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 13:15:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:14,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 13:15:14,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:15:14,123 INFO L87 Difference]: Start difference. First operand 1003 states and 1490 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:15:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:20,619 INFO L93 Difference]: Finished difference Result 1895 states and 2865 transitions. [2024-12-02 13:15:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:15:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-12-02 13:15:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:20,623 INFO L225 Difference]: With dead ends: 1895 [2024-12-02 13:15:20,623 INFO L226 Difference]: Without dead ends: 1732 [2024-12-02 13:15:20,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 13:15:20,625 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1412 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:20,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1824 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3122 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 13:15:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-12-02 13:15:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 998. [2024-12-02 13:15:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 794 states have (on average 1.4193954659949621) internal successors, (1127), 795 states have internal predecessors, (1127), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 13:15:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1483 transitions. [2024-12-02 13:15:20,673 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1483 transitions. Word has length 220 [2024-12-02 13:15:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:20,673 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1483 transitions. [2024-12-02 13:15:20,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:15:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1483 transitions. [2024-12-02 13:15:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:15:20,674 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:20,674 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:15:20,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:15:20,675 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:20,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash 314068171, now seen corresponding path program 1 times [2024-12-02 13:15:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:20,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033687969] [2024-12-02 13:15:20,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:16:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033687969] [2024-12-02 13:16:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033687969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:16:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915443900] [2024-12-02 13:16:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:16:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:16:00,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:16:00,993 INFO L87 Difference]: Start difference. First operand 998 states and 1483 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:06,990 INFO L93 Difference]: Finished difference Result 1835 states and 2778 transitions. [2024-12-02 13:16:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:16:06,991 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:16:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:06,994 INFO L225 Difference]: With dead ends: 1835 [2024-12-02 13:16:06,995 INFO L226 Difference]: Without dead ends: 1672 [2024-12-02 13:16:06,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:16:06,996 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 889 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:06,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1740 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 13:16:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-12-02 13:16:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1015. [2024-12-02 13:16:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 811 states have (on average 1.4217016029593095) internal successors, (1153), 812 states have internal predecessors, (1153), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 13:16:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1509 transitions. [2024-12-02 13:16:07,072 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1509 transitions. Word has length 220 [2024-12-02 13:16:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:07,072 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1509 transitions. [2024-12-02 13:16:07,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1509 transitions. [2024-12-02 13:16:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-12-02 13:16:07,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:07,075 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:07,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:16:07,075 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:07,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1360734325, now seen corresponding path program 1 times [2024-12-02 13:16:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865529540] [2024-12-02 13:16:07,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:16:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865529540] [2024-12-02 13:16:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865529540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:25,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:25,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:16:25,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652780799] [2024-12-02 13:16:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:25,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:16:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:25,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:16:25,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:16:25,176 INFO L87 Difference]: Start difference. First operand 1015 states and 1509 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:26,771 INFO L93 Difference]: Finished difference Result 2149 states and 3228 transitions. [2024-12-02 13:16:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:16:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-12-02 13:16:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:26,775 INFO L225 Difference]: With dead ends: 2149 [2024-12-02 13:16:26,775 INFO L226 Difference]: Without dead ends: 1542 [2024-12-02 13:16:26,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:16:26,777 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 563 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:26,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1562 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:16:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-12-02 13:16:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1003. [2024-12-02 13:16:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 799 states have (on average 1.4230287859824782) internal successors, (1137), 800 states have internal predecessors, (1137), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 13:16:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1493 transitions. [2024-12-02 13:16:26,821 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1493 transitions. Word has length 220 [2024-12-02 13:16:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:26,821 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1493 transitions. [2024-12-02 13:16:26,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1493 transitions. [2024-12-02 13:16:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:16:26,823 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:26,823 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:26,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:16:26,823 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:26,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1279205234, now seen corresponding path program 1 times [2024-12-02 13:16:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060879534] [2024-12-02 13:16:26,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:16:38,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060879534] [2024-12-02 13:16:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060879534] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:38,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:38,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:16:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532719185] [2024-12-02 13:16:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:38,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:16:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:38,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:16:38,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:16:38,622 INFO L87 Difference]: Start difference. First operand 1003 states and 1493 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:40,074 INFO L93 Difference]: Finished difference Result 1569 states and 2372 transitions. [2024-12-02 13:16:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:16:40,074 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-12-02 13:16:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:40,077 INFO L225 Difference]: With dead ends: 1569 [2024-12-02 13:16:40,077 INFO L226 Difference]: Without dead ends: 1383 [2024-12-02 13:16:40,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:16:40,078 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 412 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:40,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 961 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:16:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-12-02 13:16:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 991. [2024-12-02 13:16:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 787 states have (on average 1.423125794155019) internal successors, (1120), 788 states have internal predecessors, (1120), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 13:16:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1476 transitions. [2024-12-02 13:16:40,119 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1476 transitions. Word has length 221 [2024-12-02 13:16:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:40,119 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1476 transitions. [2024-12-02 13:16:40,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1476 transitions. [2024-12-02 13:16:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:16:40,120 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:40,120 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:40,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 13:16:40,120 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1866011248, now seen corresponding path program 1 times [2024-12-02 13:16:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619325280] [2024-12-02 13:16:40,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:16:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:40,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619325280] [2024-12-02 13:16:40,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619325280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:40,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:40,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:16:40,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537700735] [2024-12-02 13:16:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:40,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:16:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:40,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:16:40,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:16:40,273 INFO L87 Difference]: Start difference. First operand 991 states and 1476 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:40,388 INFO L93 Difference]: Finished difference Result 1265 states and 1913 transitions. [2024-12-02 13:16:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:16:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-12-02 13:16:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:40,392 INFO L225 Difference]: With dead ends: 1265 [2024-12-02 13:16:40,392 INFO L226 Difference]: Without dead ends: 1054 [2024-12-02 13:16:40,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:16:40,394 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 81 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:40,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 538 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:16:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-12-02 13:16:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 938. [2024-12-02 13:16:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 742 states have (on average 1.4110512129380053) internal successors, (1047), 742 states have internal predecessors, (1047), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 13:16:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1387 transitions. [2024-12-02 13:16:40,444 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1387 transitions. Word has length 221 [2024-12-02 13:16:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:40,444 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1387 transitions. [2024-12-02 13:16:40,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:16:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1387 transitions. [2024-12-02 13:16:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:16:40,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:40,446 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:16:40,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:16:40,446 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:40,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1992236020, now seen corresponding path program 1 times [2024-12-02 13:16:40,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:40,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624600784] [2024-12-02 13:16:40,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:40,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:17:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624600784] [2024-12-02 13:17:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624600784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:17:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:17:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 13:17:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276238462] [2024-12-02 13:17:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:17:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 13:17:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:51,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 13:17:51,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:17:51,397 INFO L87 Difference]: Start difference. First operand 938 states and 1387 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:18:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:00,440 INFO L93 Difference]: Finished difference Result 1516 states and 2266 transitions. [2024-12-02 13:18:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 13:18:00,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 221 [2024-12-02 13:18:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:00,445 INFO L225 Difference]: With dead ends: 1516 [2024-12-02 13:18:00,445 INFO L226 Difference]: Without dead ends: 1371 [2024-12-02 13:18:00,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:18:00,446 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 1335 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:00,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1143 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 13:18:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-12-02 13:18:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 954. [2024-12-02 13:18:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 758 states have (on average 1.4142480211081794) internal successors, (1072), 758 states have internal predecessors, (1072), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 13:18:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1412 transitions. [2024-12-02 13:18:00,490 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1412 transitions. Word has length 221 [2024-12-02 13:18:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:00,490 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1412 transitions. [2024-12-02 13:18:00,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 13:18:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1412 transitions. [2024-12-02 13:18:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:18:00,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:00,492 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:00,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:18:00,492 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:00,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 568525198, now seen corresponding path program 1 times [2024-12-02 13:18:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:00,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137628599] [2024-12-02 13:18:00,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:18:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137628599] [2024-12-02 13:18:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137628599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:18:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:18:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036487466] [2024-12-02 13:18:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:27,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:18:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:27,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:18:27,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:18:27,542 INFO L87 Difference]: Start difference. First operand 954 states and 1412 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:18:31,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:31,845 INFO L93 Difference]: Finished difference Result 1438 states and 2151 transitions. [2024-12-02 13:18:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:18:31,846 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-12-02 13:18:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:31,851 INFO L225 Difference]: With dead ends: 1438 [2024-12-02 13:18:31,851 INFO L226 Difference]: Without dead ends: 1293 [2024-12-02 13:18:31,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:18:31,853 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 819 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:31,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1002 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 13:18:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-12-02 13:18:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 955. [2024-12-02 13:18:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 759 states have (on average 1.4150197628458498) internal successors, (1074), 759 states have internal predecessors, (1074), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 13:18:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1414 transitions. [2024-12-02 13:18:31,905 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1414 transitions. Word has length 221 [2024-12-02 13:18:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:31,905 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1414 transitions. [2024-12-02 13:18:31,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:18:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1414 transitions. [2024-12-02 13:18:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:18:31,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:31,906 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:31,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:18:31,906 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:31,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 876562766, now seen corresponding path program 1 times [2024-12-02 13:18:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842345646] [2024-12-02 13:18:31,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:31,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:19:57,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:57,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842345646] [2024-12-02 13:19:57,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842345646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:19:57,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:19:57,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 13:19:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586482645] [2024-12-02 13:19:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:19:57,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:19:57,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:57,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:19:57,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:19:57,342 INFO L87 Difference]: Start difference. First operand 955 states and 1414 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:06,989 INFO L93 Difference]: Finished difference Result 1574 states and 2363 transitions. [2024-12-02 13:20:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:20:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-12-02 13:20:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:06,995 INFO L225 Difference]: With dead ends: 1574 [2024-12-02 13:20:06,995 INFO L226 Difference]: Without dead ends: 1429 [2024-12-02 13:20:06,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2024-12-02 13:20:06,997 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 1162 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:06,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 882 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 13:20:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2024-12-02 13:20:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 977. [2024-12-02 13:20:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 781 states have (on average 1.4148527528809218) internal successors, (1105), 781 states have internal predecessors, (1105), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 13:20:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1445 transitions. [2024-12-02 13:20:07,046 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1445 transitions. Word has length 221 [2024-12-02 13:20:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:07,046 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1445 transitions. [2024-12-02 13:20:07,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1445 transitions. [2024-12-02 13:20:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:20:07,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:07,048 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:07,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:20:07,048 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:07,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -18280816, now seen corresponding path program 1 times [2024-12-02 13:20:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:07,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513635328] [2024-12-02 13:20:07,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:07,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:20:07,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513635328] [2024-12-02 13:20:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513635328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:20:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533146430] [2024-12-02 13:20:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:07,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:20:07,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:07,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:20:07,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:20:07,196 INFO L87 Difference]: Start difference. First operand 977 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:20:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:07,335 INFO L93 Difference]: Finished difference Result 1334 states and 2015 transitions. [2024-12-02 13:20:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:20:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-12-02 13:20:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:07,340 INFO L225 Difference]: With dead ends: 1334 [2024-12-02 13:20:07,340 INFO L226 Difference]: Without dead ends: 1189 [2024-12-02 13:20:07,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:20:07,341 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:07,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 581 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:20:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2024-12-02 13:20:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 977. [2024-12-02 13:20:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 781 states have (on average 1.4148527528809218) internal successors, (1105), 781 states have internal predecessors, (1105), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 13:20:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1445 transitions. [2024-12-02 13:20:07,391 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1445 transitions. Word has length 221 [2024-12-02 13:20:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:07,391 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1445 transitions. [2024-12-02 13:20:07,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:20:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1445 transitions. [2024-12-02 13:20:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:20:07,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:07,392 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:07,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:20:07,392 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:07,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 613787534, now seen corresponding path program 1 times [2024-12-02 13:20:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964467549] [2024-12-02 13:20:07,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:20:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964467549] [2024-12-02 13:20:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964467549] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:07,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:07,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:20:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234007598] [2024-12-02 13:20:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:07,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:20:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:07,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:20:07,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:20:07,530 INFO L87 Difference]: Start difference. First operand 977 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:20:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:07,650 INFO L93 Difference]: Finished difference Result 2073 states and 3071 transitions. [2024-12-02 13:20:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:20:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-12-02 13:20:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:07,658 INFO L225 Difference]: With dead ends: 2073 [2024-12-02 13:20:07,658 INFO L226 Difference]: Without dead ends: 1304 [2024-12-02 13:20:07,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:20:07,660 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 84 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:07,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 705 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:20:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-12-02 13:20:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1098. [2024-12-02 13:20:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 897 states have (on average 1.4280936454849498) internal successors, (1281), 898 states have internal predecessors, (1281), 174 states have call successors, (174), 26 states have call predecessors, (174), 26 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-12-02 13:20:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1629 transitions. [2024-12-02 13:20:07,716 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1629 transitions. Word has length 221 [2024-12-02 13:20:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:07,716 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1629 transitions. [2024-12-02 13:20:07,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:20:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1629 transitions. [2024-12-02 13:20:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:20:07,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:07,717 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:07,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 13:20:07,718 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:07,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash -301743279, now seen corresponding path program 1 times [2024-12-02 13:20:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:07,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168924775] [2024-12-02 13:20:07,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:20:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168924775] [2024-12-02 13:20:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168924775] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:10,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:20:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048023431] [2024-12-02 13:20:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:10,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:20:10,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:10,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:20:10,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:20:10,848 INFO L87 Difference]: Start difference. First operand 1098 states and 1629 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:14,191 INFO L93 Difference]: Finished difference Result 2272 states and 3448 transitions. [2024-12-02 13:20:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:20:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-12-02 13:20:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:14,197 INFO L225 Difference]: With dead ends: 2272 [2024-12-02 13:20:14,197 INFO L226 Difference]: Without dead ends: 2050 [2024-12-02 13:20:14,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:20:14,198 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 696 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:14,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1042 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 13:20:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2024-12-02 13:20:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1580. [2024-12-02 13:20:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1338 states have (on average 1.4715994020926757) internal successors, (1969), 1340 states have internal predecessors, (1969), 212 states have call successors, (212), 29 states have call predecessors, (212), 29 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-12-02 13:20:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2393 transitions. [2024-12-02 13:20:14,303 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2393 transitions. Word has length 221 [2024-12-02 13:20:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:14,303 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2393 transitions. [2024-12-02 13:20:14,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2393 transitions. [2024-12-02 13:20:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:20:14,304 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:14,305 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:14,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:20:14,305 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:14,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:14,305 INFO L85 PathProgramCache]: Analyzing trace with hash 497292942, now seen corresponding path program 1 times [2024-12-02 13:20:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843608708] [2024-12-02 13:20:14,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:14,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:20:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843608708] [2024-12-02 13:20:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843608708] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 13:20:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620093906] [2024-12-02 13:20:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:31,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:20:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:31,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:20:31,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:20:31,060 INFO L87 Difference]: Start difference. First operand 1580 states and 2393 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:35,015 INFO L93 Difference]: Finished difference Result 3282 states and 4959 transitions. [2024-12-02 13:20:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:20:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-12-02 13:20:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:35,023 INFO L225 Difference]: With dead ends: 3282 [2024-12-02 13:20:35,023 INFO L226 Difference]: Without dead ends: 2032 [2024-12-02 13:20:35,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:20:35,027 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 490 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:35,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1304 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 13:20:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2024-12-02 13:20:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1524. [2024-12-02 13:20:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1282 states have (on average 1.465678627145086) internal successors, (1879), 1284 states have internal predecessors, (1879), 212 states have call successors, (212), 29 states have call predecessors, (212), 29 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-12-02 13:20:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2303 transitions. [2024-12-02 13:20:35,117 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2303 transitions. Word has length 221 [2024-12-02 13:20:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:35,117 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 2303 transitions. [2024-12-02 13:20:35,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:20:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2303 transitions. [2024-12-02 13:20:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:20:35,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:35,118 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:20:35,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:20:35,119 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:35,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -442291889, now seen corresponding path program 1 times [2024-12-02 13:20:35,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:35,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782075143] [2024-12-02 13:20:35,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:35,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:20:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782075143] [2024-12-02 13:20:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782075143] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:20:43,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:20:43,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 13:20:43,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52415665] [2024-12-02 13:20:43,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:20:43,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:20:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:43,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:20:43,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:20:43,251 INFO L87 Difference]: Start difference. First operand 1524 states and 2303 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2024-12-02 13:21:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:21:03,084 INFO L93 Difference]: Finished difference Result 2716 states and 4134 transitions. [2024-12-02 13:21:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 13:21:03,085 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 221 [2024-12-02 13:21:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:21:03,092 INFO L225 Difference]: With dead ends: 2716 [2024-12-02 13:21:03,092 INFO L226 Difference]: Without dead ends: 2494 [2024-12-02 13:21:03,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:21:03,094 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 1209 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:21:03,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1259 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2024-12-02 13:21:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2024-12-02 13:21:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1802. [2024-12-02 13:21:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1553 states have (on average 1.4822923374114616) internal successors, (2302), 1557 states have internal predecessors, (2302), 216 states have call successors, (216), 32 states have call predecessors, (216), 32 states have return successors, (216), 212 states have call predecessors, (216), 216 states have call successors, (216) [2024-12-02 13:21:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2734 transitions. [2024-12-02 13:21:03,201 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2734 transitions. Word has length 221 [2024-12-02 13:21:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:21:03,201 INFO L471 AbstractCegarLoop]: Abstraction has 1802 states and 2734 transitions. [2024-12-02 13:21:03,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2024-12-02 13:21:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2734 transitions. [2024-12-02 13:21:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 13:21:03,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:21:03,202 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:21:03,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 13:21:03,203 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:21:03,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:21:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1858530701, now seen corresponding path program 1 times [2024-12-02 13:21:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:21:03,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488300598] [2024-12-02 13:21:03,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:21:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:21:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:21:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:21:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:21:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488300598] [2024-12-02 13:21:07,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488300598] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:21:07,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:21:07,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 13:21:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887832968] [2024-12-02 13:21:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:21:07,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:21:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:21:07,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:21:07,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:21:07,586 INFO L87 Difference]: Start difference. First operand 1802 states and 2734 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:21:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:21:14,661 INFO L93 Difference]: Finished difference Result 3067 states and 4675 transitions. [2024-12-02 13:21:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:21:14,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-12-02 13:21:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:21:14,667 INFO L225 Difference]: With dead ends: 3067 [2024-12-02 13:21:14,667 INFO L226 Difference]: Without dead ends: 2653 [2024-12-02 13:21:14,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:21:14,669 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 837 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:21:14,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1580 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 13:21:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2024-12-02 13:21:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 1832. [2024-12-02 13:21:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1583 states have (on average 1.4838913455464309) internal successors, (2349), 1587 states have internal predecessors, (2349), 216 states have call successors, (216), 32 states have call predecessors, (216), 32 states have return successors, (216), 212 states have call predecessors, (216), 216 states have call successors, (216) [2024-12-02 13:21:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2781 transitions. [2024-12-02 13:21:14,777 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2781 transitions. Word has length 221 [2024-12-02 13:21:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:21:14,777 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2781 transitions. [2024-12-02 13:21:14,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 13:21:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2781 transitions. [2024-12-02 13:21:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-12-02 13:21:14,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:21:14,780 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:21:14,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 13:21:14,780 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:21:14,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:21:14,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1583147578, now seen corresponding path program 1 times [2024-12-02 13:21:14,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:21:14,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108103639] [2024-12-02 13:21:14,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:21:14,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:21:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:22:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-12-02 13:22:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:22:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108103639] [2024-12-02 13:22:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108103639] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:22:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:22:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:22:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296232554] [2024-12-02 13:22:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:22:33,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:22:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:22:33,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:22:33,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:22:33,236 INFO L87 Difference]: Start difference. First operand 1832 states and 2781 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:22:39,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 13:22:43,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:22:43,064 INFO L93 Difference]: Finished difference Result 4109 states and 6271 transitions. [2024-12-02 13:22:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:22:43,064 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-12-02 13:22:43,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:22:43,071 INFO L225 Difference]: With dead ends: 4109 [2024-12-02 13:22:43,071 INFO L226 Difference]: Without dead ends: 3385 [2024-12-02 13:22:43,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:22:43,074 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1852 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:22:43,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 1276 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-12-02 13:22:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-12-02 13:22:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 1919. [2024-12-02 13:22:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1670 states have (on average 1.4856287425149701) internal successors, (2481), 1674 states have internal predecessors, (2481), 216 states have call successors, (216), 32 states have call predecessors, (216), 32 states have return successors, (216), 212 states have call predecessors, (216), 216 states have call successors, (216) [2024-12-02 13:22:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2913 transitions. [2024-12-02 13:22:43,189 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2913 transitions. Word has length 222 [2024-12-02 13:22:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:22:43,189 INFO L471 AbstractCegarLoop]: Abstraction has 1919 states and 2913 transitions. [2024-12-02 13:22:43,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-12-02 13:22:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2913 transitions. [2024-12-02 13:22:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-12-02 13:22:43,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:22:43,191 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:22:43,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 13:22:43,191 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:22:43,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:22:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 310509636, now seen corresponding path program 1 times [2024-12-02 13:22:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:22:43,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340796298] [2024-12-02 13:22:43,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:22:43,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:22:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat