./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_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_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/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_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/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_c435d997-99de-4a72-bec4-09f037caef75/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 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:24:04,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:24:04,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:24:04,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:24:04,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:24:04,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:24:04,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:24:04,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:24:04,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:24:04,916 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:24:04,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:24:04,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:24:04,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:24:04,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:24:04,917 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:24:04,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:24:04,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:24:04,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:24:04,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:04,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:24:04,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:04,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:24:04,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:24:04,920 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_c435d997-99de-4a72-bec4-09f037caef75/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 -> 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee [2024-12-02 12:24:05,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:24:05,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:24:05,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:24:05,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:24:05,216 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:24:05,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-12-02 12:24:08,147 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/data/948fbee7a/a432105c95ad44d5a6563e35850a978c/FLAGbc4f8acc4 [2024-12-02 12:24:08,371 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:24:08,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-12-02 12:24:08,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/data/948fbee7a/a432105c95ad44d5a6563e35850a978c/FLAGbc4f8acc4 [2024-12-02 12:24:08,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/data/948fbee7a/a432105c95ad44d5a6563e35850a978c [2024-12-02 12:24:08,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:24:08,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:24:08,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:24:08,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:24:08,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:24:08,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:08" (1/1) ... [2024-12-02 12:24:08,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573580c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:08, skipping insertion in model container [2024-12-02 12:24:08,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:08" (1/1) ... [2024-12-02 12:24:08,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:24:08,880 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_c435d997-99de-4a72-bec4-09f037caef75/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2024-12-02 12:24:08,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:24:08,976 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:24:08,988 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_c435d997-99de-4a72-bec4-09f037caef75/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2024-12-02 12:24:09,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:24:09,050 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:24:09,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09 WrapperNode [2024-12-02 12:24:09,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:24:09,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:24:09,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:24:09,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:24:09,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,114 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 317 [2024-12-02 12:24:09,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:24:09,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:24:09,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:24:09,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:24:09,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,156 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 12:24:09,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:24:09,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:24:09,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:24:09,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:24:09,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (1/1) ... [2024-12-02 12:24:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:24:09,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:24:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:24:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:24:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:24:09,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:24:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:24:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:24:09,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:24:09,358 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:24:09,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:24:09,862 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-12-02 12:24:09,862 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:24:09,874 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:24:09,875 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:24:09,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:09 BoogieIcfgContainer [2024-12-02 12:24:09,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:24:09,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:24:09,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:24:09,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:24:09,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:24:08" (1/3) ... [2024-12-02 12:24:09,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f048f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:09, skipping insertion in model container [2024-12-02 12:24:09,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:09" (2/3) ... [2024-12-02 12:24:09,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f048f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:09, skipping insertion in model container [2024-12-02 12:24:09,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:09" (3/3) ... [2024-12-02 12:24:09,884 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2024-12-02 12:24:09,898 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:24:09,900 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i that has 2 procedures, 139 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:24:09,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:24:09,978 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;@22027afb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:24:09,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:24:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 12:24:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-12-02 12:24:09,997 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:09,997 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:09,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:24:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash -540524557, now seen corresponding path program 1 times [2024-12-02 12:24:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532328728] [2024-12-02 12:24:10,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:10,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-12-02 12:24:10,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532328728] [2024-12-02 12:24:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532328728] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:24:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569213087] [2024-12-02 12:24:10,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:24:10,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:24:10,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:24:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:24:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:10,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:24:10,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:24:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-12-02 12:24:10,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:24:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569213087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:24:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:24:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400026609] [2024-12-02 12:24:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:10,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:24:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:10,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:24:10,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:24:10,641 INFO L87 Difference]: Start difference. First operand has 139 states, 94 states have (on average 1.425531914893617) internal successors, (134), 95 states have internal predecessors, (134), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:24:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:24:10,677 INFO L93 Difference]: Finished difference Result 271 states and 472 transitions. [2024-12-02 12:24:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:24:10,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-12-02 12:24:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:24:10,686 INFO L225 Difference]: With dead ends: 271 [2024-12-02 12:24:10,686 INFO L226 Difference]: Without dead ends: 135 [2024-12-02 12:24:10,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 264 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 12:24:10,693 INFO L435 NwaCegarLoop]: 211 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, 211 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 12:24:10,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:24:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-12-02 12:24:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-12-02 12:24:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 91 states have internal predecessors, (127), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 12:24:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 211 transitions. [2024-12-02 12:24:10,741 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 211 transitions. Word has length 263 [2024-12-02 12:24:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:24:10,741 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 211 transitions. [2024-12-02 12:24:10,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:24:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 211 transitions. [2024-12-02 12:24:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-12-02 12:24:10,747 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:10,747 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:10,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:24:10,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:24:10,948 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:24:10,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1472034875, now seen corresponding path program 1 times [2024-12-02 12:24:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018388130] [2024-12-02 12:24:10,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:24:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018388130] [2024-12-02 12:24:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018388130] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:24:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9979484] [2024-12-02 12:24:11,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:11,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:24:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:11,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:24:11,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:24:11,498 INFO L87 Difference]: Start difference. First operand 135 states and 211 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:24:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:24:11,583 INFO L93 Difference]: Finished difference Result 368 states and 582 transitions. [2024-12-02 12:24:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:24:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-12-02 12:24:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:24:11,588 INFO L225 Difference]: With dead ends: 368 [2024-12-02 12:24:11,588 INFO L226 Difference]: Without dead ends: 236 [2024-12-02 12:24:11,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:24:11,591 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 91 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:24:11,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 401 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:24:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-12-02 12:24:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 216. [2024-12-02 12:24:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 129 states have internal predecessors, (171), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 12:24:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 339 transitions. [2024-12-02 12:24:11,630 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 339 transitions. Word has length 263 [2024-12-02 12:24:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:24:11,631 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 339 transitions. [2024-12-02 12:24:11,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:24:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 339 transitions. [2024-12-02 12:24:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-12-02 12:24:11,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:11,637 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:11,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:24:11,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:24:11,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash -467416965, now seen corresponding path program 1 times [2024-12-02 12:24:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172816891] [2024-12-02 12:24:11,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:24:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172816891] [2024-12-02 12:24:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172816891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:24:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633053357] [2024-12-02 12:24:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:12,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:24:12,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:12,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:24:12,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:24:12,243 INFO L87 Difference]: Start difference. First operand 216 states and 339 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:24:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:24:12,537 INFO L93 Difference]: Finished difference Result 400 states and 625 transitions. [2024-12-02 12:24:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:24:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-12-02 12:24:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:24:12,541 INFO L225 Difference]: With dead ends: 400 [2024-12-02 12:24:12,541 INFO L226 Difference]: Without dead ends: 268 [2024-12-02 12:24:12,542 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 12:24:12,543 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 164 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:24:12,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 601 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:24:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-12-02 12:24:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 234. [2024-12-02 12:24:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 147 states have internal predecessors, (199), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 12:24:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 367 transitions. [2024-12-02 12:24:12,589 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 367 transitions. Word has length 263 [2024-12-02 12:24:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:24:12,590 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 367 transitions. [2024-12-02 12:24:12,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:24:12,591 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 367 transitions. [2024-12-02 12:24:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 12:24:12,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:12,596 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:12,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:24:12,596 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:24:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1524347362, now seen corresponding path program 1 times [2024-12-02 12:24:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574800516] [2024-12-02 12:24:12,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:24:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574800516] [2024-12-02 12:24:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574800516] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:33,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:33,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:24:33,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353276691] [2024-12-02 12:24:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:33,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:24:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:33,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:24:33,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:24:33,751 INFO L87 Difference]: Start difference. First operand 234 states and 367 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:24:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:24:35,871 INFO L93 Difference]: Finished difference Result 606 states and 923 transitions. [2024-12-02 12:24:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:24:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-12-02 12:24:35,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:24:35,876 INFO L225 Difference]: With dead ends: 606 [2024-12-02 12:24:35,876 INFO L226 Difference]: Without dead ends: 474 [2024-12-02 12:24:35,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:24:35,877 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 551 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:24:35,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1121 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 12:24:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-12-02 12:24:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 363. [2024-12-02 12:24:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 230 states have (on average 1.317391304347826) internal successors, (303), 231 states have internal predecessors, (303), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 12:24:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 555 transitions. [2024-12-02 12:24:35,943 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 555 transitions. Word has length 264 [2024-12-02 12:24:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:24:35,944 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 555 transitions. [2024-12-02 12:24:35,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:24:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 555 transitions. [2024-12-02 12:24:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 12:24:35,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:35,949 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:35,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:24:35,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:24:35,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1183337378, now seen corresponding path program 1 times [2024-12-02 12:24:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:35,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402281052] [2024-12-02 12:24:35,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:35,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:24:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402281052] [2024-12-02 12:24:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402281052] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:58,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:58,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:24:58,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761176653] [2024-12-02 12:24:58,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:58,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:24:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:58,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:24:58,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:24:58,321 INFO L87 Difference]: Start difference. First operand 363 states and 555 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:25:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:25:00,472 INFO L93 Difference]: Finished difference Result 775 states and 1158 transitions. [2024-12-02 12:25:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:25:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-12-02 12:25:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:25:00,476 INFO L225 Difference]: With dead ends: 775 [2024-12-02 12:25:00,477 INFO L226 Difference]: Without dead ends: 489 [2024-12-02 12:25:00,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:25:00,478 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 518 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:25:00,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1123 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 12:25:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-12-02 12:25:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 376. [2024-12-02 12:25:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 244 states have internal predecessors, (321), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 12:25:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 573 transitions. [2024-12-02 12:25:00,525 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 573 transitions. Word has length 264 [2024-12-02 12:25:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:25:00,526 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 573 transitions. [2024-12-02 12:25:00,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:25:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 573 transitions. [2024-12-02 12:25:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 12:25:00,530 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:25:00,531 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:00,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:25:00,531 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:25:00,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:25:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1963504478, now seen corresponding path program 1 times [2024-12-02 12:25:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:25:00,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220661226] [2024-12-02 12:25:00,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:25:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:25:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:25:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:25:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:25:15,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220661226] [2024-12-02 12:25:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220661226] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:25:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:25:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:25:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610307827] [2024-12-02 12:25:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:25:15,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:25:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:25:15,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:25:15,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:25:15,107 INFO L87 Difference]: Start difference. First operand 376 states and 573 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:25:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:25:16,328 INFO L93 Difference]: Finished difference Result 760 states and 1140 transitions. [2024-12-02 12:25:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:25:16,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-12-02 12:25:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:25:16,332 INFO L225 Difference]: With dead ends: 760 [2024-12-02 12:25:16,332 INFO L226 Difference]: Without dead ends: 461 [2024-12-02 12:25:16,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:25:16,334 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 470 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:25:16,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1163 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 12:25:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-12-02 12:25:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 365. [2024-12-02 12:25:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 232 states have (on average 1.3146551724137931) internal successors, (305), 233 states have internal predecessors, (305), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 12:25:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 557 transitions. [2024-12-02 12:25:16,364 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 557 transitions. Word has length 264 [2024-12-02 12:25:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:25:16,365 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 557 transitions. [2024-12-02 12:25:16,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:25:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 557 transitions. [2024-12-02 12:25:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 12:25:16,366 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:25:16,367 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:16,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:25:16,367 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:25:16,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:25:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -469797344, now seen corresponding path program 1 times [2024-12-02 12:25:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:25:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461688585] [2024-12-02 12:25:16,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:25:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:25:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:26:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:26:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:26:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461688585] [2024-12-02 12:26:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461688585] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:26:13,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:26:13,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:26:13,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677911140] [2024-12-02 12:26:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:26:13,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:26:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:26:13,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:26:13,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:26:13,005 INFO L87 Difference]: Start difference. First operand 365 states and 557 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:26:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:26:16,019 INFO L93 Difference]: Finished difference Result 796 states and 1206 transitions. [2024-12-02 12:26:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:26:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 264 [2024-12-02 12:26:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:26:16,024 INFO L225 Difference]: With dead ends: 796 [2024-12-02 12:26:16,024 INFO L226 Difference]: Without dead ends: 664 [2024-12-02 12:26:16,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:26:16,026 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 663 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:26:16,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1375 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 12:26:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-12-02 12:26:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 533. [2024-12-02 12:26:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 355 states have (on average 1.3380281690140845) internal successors, (475), 355 states have internal predecessors, (475), 168 states have call successors, (168), 9 states have call predecessors, (168), 9 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2024-12-02 12:26:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 811 transitions. [2024-12-02 12:26:16,095 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 811 transitions. Word has length 264 [2024-12-02 12:26:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:26:16,095 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 811 transitions. [2024-12-02 12:26:16,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:26:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 811 transitions. [2024-12-02 12:26:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-12-02 12:26:16,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:26:16,098 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:16,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:26:16,098 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:26:16,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:26:16,099 INFO L85 PathProgramCache]: Analyzing trace with hash -810807328, now seen corresponding path program 1 times [2024-12-02 12:26:16,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:26:16,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228119498] [2024-12-02 12:26:16,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:26:16,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:26:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:26:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:26:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:26:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228119498] [2024-12-02 12:26:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228119498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:26:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:26:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 12:26:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686506996] [2024-12-02 12:26:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:26:33,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:26:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:26:33,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:26:33,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:26:33,373 INFO L87 Difference]: Start difference. First operand 533 states and 811 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:26:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:26:34,829 INFO L93 Difference]: Finished difference Result 1032 states and 1563 transitions. [2024-12-02 12:26:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:26:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-12-02 12:26:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:26:34,834 INFO L225 Difference]: With dead ends: 1032 [2024-12-02 12:26:34,834 INFO L226 Difference]: Without dead ends: 750 [2024-12-02 12:26:34,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:26:34,835 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 358 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:26:34,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1182 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:26:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-12-02 12:26:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 686. [2024-12-02 12:26:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 463 states have (on average 1.3369330453563715) internal successors, (619), 463 states have internal predecessors, (619), 210 states have call successors, (210), 12 states have call predecessors, (210), 12 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-12-02 12:26:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1039 transitions. [2024-12-02 12:26:34,876 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1039 transitions. Word has length 264 [2024-12-02 12:26:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:26:34,876 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1039 transitions. [2024-12-02 12:26:34,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:26:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1039 transitions. [2024-12-02 12:26:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:26:34,879 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:26:34,879 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:34,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:26:34,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:26:34,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:26:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash 555059664, now seen corresponding path program 1 times [2024-12-02 12:26:34,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:26:34,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270288124] [2024-12-02 12:26:34,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:26:34,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:26:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:27:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:27:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:27:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270288124] [2024-12-02 12:27:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270288124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:27:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:27:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:27:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944862794] [2024-12-02 12:27:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:27:27,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:27:27,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:27:27,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:27:27,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:27:27,144 INFO L87 Difference]: Start difference. First operand 686 states and 1039 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:27:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:27:29,685 INFO L93 Difference]: Finished difference Result 1023 states and 1522 transitions. [2024-12-02 12:27:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:27:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-12-02 12:27:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:27:29,690 INFO L225 Difference]: With dead ends: 1023 [2024-12-02 12:27:29,690 INFO L226 Difference]: Without dead ends: 891 [2024-12-02 12:27:29,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:27:29,692 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 542 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:27:29,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1113 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:27:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-12-02 12:27:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 703. [2024-12-02 12:27:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 480 states have (on average 1.34375) internal successors, (645), 480 states have internal predecessors, (645), 210 states have call successors, (210), 12 states have call predecessors, (210), 12 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-12-02 12:27:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1065 transitions. [2024-12-02 12:27:29,759 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1065 transitions. Word has length 265 [2024-12-02 12:27:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:27:29,759 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1065 transitions. [2024-12-02 12:27:29,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:27:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1065 transitions. [2024-12-02 12:27:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:27:29,761 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:27:29,761 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:29,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:27:29,762 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:27:29,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:27:29,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1964900270, now seen corresponding path program 1 times [2024-12-02 12:27:29,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:27:29,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914580930] [2024-12-02 12:27:29,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:27:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:27:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:27:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:27:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:27:30,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914580930] [2024-12-02 12:27:30,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914580930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:27:30,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:27:30,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:27:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613553788] [2024-12-02 12:27:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:27:30,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:27:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:27:30,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:27:30,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:27:30,122 INFO L87 Difference]: Start difference. First operand 703 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:27:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:27:30,259 INFO L93 Difference]: Finished difference Result 1269 states and 1910 transitions. [2024-12-02 12:27:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:27:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-12-02 12:27:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:27:30,264 INFO L225 Difference]: With dead ends: 1269 [2024-12-02 12:27:30,265 INFO L226 Difference]: Without dead ends: 834 [2024-12-02 12:27:30,266 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 12:27:30,267 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 114 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:27:30,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 380 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:27:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-12-02 12:27:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 789. [2024-12-02 12:27:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 562 states have (on average 1.3505338078291815) internal successors, (759), 563 states have internal predecessors, (759), 212 states have call successors, (212), 14 states have call predecessors, (212), 14 states have return successors, (212), 211 states have call predecessors, (212), 212 states have call successors, (212) [2024-12-02 12:27:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1183 transitions. [2024-12-02 12:27:30,312 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1183 transitions. Word has length 265 [2024-12-02 12:27:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:27:30,313 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1183 transitions. [2024-12-02 12:27:30,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:27:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1183 transitions. [2024-12-02 12:27:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:27:30,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:27:30,314 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:30,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:27:30,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:27:30,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:27:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -31746350, now seen corresponding path program 1 times [2024-12-02 12:27:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:27:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912543379] [2024-12-02 12:27:30,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:27:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:27:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:27:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:27:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:27:30,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912543379] [2024-12-02 12:27:30,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912543379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:27:30,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:27:30,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:27:30,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483739311] [2024-12-02 12:27:30,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:27:30,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:27:30,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:27:30,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:27:30,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:27:30,458 INFO L87 Difference]: Start difference. First operand 789 states and 1183 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:27:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:27:30,541 INFO L93 Difference]: Finished difference Result 1639 states and 2421 transitions. [2024-12-02 12:27:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:27:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-12-02 12:27:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:27:30,546 INFO L225 Difference]: With dead ends: 1639 [2024-12-02 12:27:30,546 INFO L226 Difference]: Without dead ends: 982 [2024-12-02 12:27:30,547 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 12:27:30,548 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 39 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:27:30,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 674 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:27:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-12-02 12:27:30,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 970. [2024-12-02 12:27:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 717 states have (on average 1.3291492329149233) internal successors, (953), 723 states have internal predecessors, (953), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 12:27:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1413 transitions. [2024-12-02 12:27:30,600 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1413 transitions. Word has length 265 [2024-12-02 12:27:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:27:30,600 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1413 transitions. [2024-12-02 12:27:30,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:27:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1413 transitions. [2024-12-02 12:27:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:27:30,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:27:30,602 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:30,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:27:30,602 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:27:30,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:27:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1426315248, now seen corresponding path program 1 times [2024-12-02 12:27:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:27:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892681222] [2024-12-02 12:27:30,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:27:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:27:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:27:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:27:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:27:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892681222] [2024-12-02 12:27:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892681222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:27:55,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:27:55,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 12:27:55,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389005575] [2024-12-02 12:27:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:27:55,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:27:55,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:27:55,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:27:55,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:27:55,263 INFO L87 Difference]: Start difference. First operand 970 states and 1413 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:27:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:27:58,632 INFO L93 Difference]: Finished difference Result 1934 states and 2770 transitions. [2024-12-02 12:27:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 12:27:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-12-02 12:27:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:27:58,639 INFO L225 Difference]: With dead ends: 1934 [2024-12-02 12:27:58,639 INFO L226 Difference]: Without dead ends: 1294 [2024-12-02 12:27:58,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:27:58,642 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 632 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:27:58,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1826 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 12:27:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2024-12-02 12:27:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 982. [2024-12-02 12:27:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 729 states have (on average 1.3305898491083676) internal successors, (970), 735 states have internal predecessors, (970), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 12:27:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1430 transitions. [2024-12-02 12:27:58,729 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1430 transitions. Word has length 265 [2024-12-02 12:27:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:27:58,730 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1430 transitions. [2024-12-02 12:27:58,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:27:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1430 transitions. [2024-12-02 12:27:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:27:58,732 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:27:58,732 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:58,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:27:58,732 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:27:58,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:27:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash -194164976, now seen corresponding path program 1 times [2024-12-02 12:27:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:27:58,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308577552] [2024-12-02 12:27:58,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:27:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:27:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:28:13,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:13,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308577552] [2024-12-02 12:28:13,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308577552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:13,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:13,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:28:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881442353] [2024-12-02 12:28:13,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:13,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:28:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:13,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:28:13,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:28:13,972 INFO L87 Difference]: Start difference. First operand 982 states and 1430 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:28:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:15,033 INFO L93 Difference]: Finished difference Result 1907 states and 2745 transitions. [2024-12-02 12:28:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:28:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-12-02 12:28:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:15,037 INFO L225 Difference]: With dead ends: 1907 [2024-12-02 12:28:15,038 INFO L226 Difference]: Without dead ends: 1255 [2024-12-02 12:28:15,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:28:15,039 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 340 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:15,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1301 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:28:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-12-02 12:28:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 968. [2024-12-02 12:28:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 715 states have (on average 1.3286713286713288) internal successors, (950), 721 states have internal predecessors, (950), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 12:28:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1410 transitions. [2024-12-02 12:28:15,092 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1410 transitions. Word has length 265 [2024-12-02 12:28:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:15,093 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1410 transitions. [2024-12-02 12:28:15,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:28:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1410 transitions. [2024-12-02 12:28:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:28:15,094 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:15,094 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:15,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:28:15,095 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1133884078, now seen corresponding path program 1 times [2024-12-02 12:28:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237611159] [2024-12-02 12:28:15,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:29:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237611159] [2024-12-02 12:29:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237611159] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:29:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848603926] [2024-12-02 12:29:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:01,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:29:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:01,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:29:01,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:29:01,639 INFO L87 Difference]: Start difference. First operand 968 states and 1410 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:29:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:03,448 INFO L93 Difference]: Finished difference Result 1516 states and 2203 transitions. [2024-12-02 12:29:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:29:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-12-02 12:29:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:03,452 INFO L225 Difference]: With dead ends: 1516 [2024-12-02 12:29:03,453 INFO L226 Difference]: Without dead ends: 1074 [2024-12-02 12:29:03,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:29:03,454 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 541 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:03,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1116 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:29:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2024-12-02 12:29:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 959. [2024-12-02 12:29:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 706 states have (on average 1.3229461756373937) internal successors, (934), 712 states have internal predecessors, (934), 230 states have call successors, (230), 22 states have call predecessors, (230), 22 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 12:29:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1394 transitions. [2024-12-02 12:29:03,545 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1394 transitions. Word has length 265 [2024-12-02 12:29:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:03,546 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1394 transitions. [2024-12-02 12:29:03,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:29:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1394 transitions. [2024-12-02 12:29:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:29:03,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:03,548 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:03,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:29:03,548 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:03,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 641123284, now seen corresponding path program 1 times [2024-12-02 12:29:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413395485] [2024-12-02 12:29:03,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:29:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413395485] [2024-12-02 12:29:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413395485] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:29:05,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898546112] [2024-12-02 12:29:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:05,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:29:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:05,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:29:05,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:29:05,863 INFO L87 Difference]: Start difference. First operand 959 states and 1394 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:29:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:10,331 INFO L93 Difference]: Finished difference Result 1576 states and 2285 transitions. [2024-12-02 12:29:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:29:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 265 [2024-12-02 12:29:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:10,336 INFO L225 Difference]: With dead ends: 1576 [2024-12-02 12:29:10,336 INFO L226 Difference]: Without dead ends: 1349 [2024-12-02 12:29:10,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2024-12-02 12:29:10,337 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 873 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:10,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1451 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 12:29:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-12-02 12:29:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1153. [2024-12-02 12:29:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 849 states have (on average 1.3333333333333333) internal successors, (1132), 856 states have internal predecessors, (1132), 276 states have call successors, (276), 27 states have call predecessors, (276), 27 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-12-02 12:29:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1684 transitions. [2024-12-02 12:29:10,442 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1684 transitions. Word has length 265 [2024-12-02 12:29:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:10,443 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1684 transitions. [2024-12-02 12:29:10,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 states have internal predecessors, (58), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:29:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1684 transitions. [2024-12-02 12:29:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:29:10,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:10,445 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:10,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:29:10,445 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:10,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1480246546, now seen corresponding path program 1 times [2024-12-02 12:29:10,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:10,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858298669] [2024-12-02 12:29:10,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:10,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:29:28,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:28,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858298669] [2024-12-02 12:29:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858298669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:28,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:28,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 12:29:28,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775743748] [2024-12-02 12:29:28,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:28,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:29:28,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:28,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:29:28,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:29:28,831 INFO L87 Difference]: Start difference. First operand 1153 states and 1684 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:29:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:29,834 INFO L93 Difference]: Finished difference Result 2015 states and 2888 transitions. [2024-12-02 12:29:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:29:29,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-12-02 12:29:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:29,840 INFO L225 Difference]: With dead ends: 2015 [2024-12-02 12:29:29,840 INFO L226 Difference]: Without dead ends: 1614 [2024-12-02 12:29:29,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:29:29,841 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 425 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:29,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1093 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:29:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2024-12-02 12:29:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1178. [2024-12-02 12:29:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 873 states have (on average 1.3379152348224512) internal successors, (1168), 880 states have internal predecessors, (1168), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-12-02 12:29:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1720 transitions. [2024-12-02 12:29:29,949 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1720 transitions. Word has length 265 [2024-12-02 12:29:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:29,950 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1720 transitions. [2024-12-02 12:29:29,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:29:29,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1720 transitions. [2024-12-02 12:29:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-12-02 12:29:29,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:29,952 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:29,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:29:29,953 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:29,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1179708306, now seen corresponding path program 1 times [2024-12-02 12:29:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056892020] [2024-12-02 12:29:29,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:29:44,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:44,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056892020] [2024-12-02 12:29:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056892020] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:44,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:44,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:29:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255418556] [2024-12-02 12:29:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:44,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:29:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:44,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:29:44,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:29:44,825 INFO L87 Difference]: Start difference. First operand 1178 states and 1720 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:29:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:45,964 INFO L93 Difference]: Finished difference Result 2242 states and 3248 transitions. [2024-12-02 12:29:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:29:45,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-12-02 12:29:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:45,969 INFO L225 Difference]: With dead ends: 2242 [2024-12-02 12:29:45,970 INFO L226 Difference]: Without dead ends: 1402 [2024-12-02 12:29:45,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:29:45,972 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 308 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:45,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1414 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:29:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2024-12-02 12:29:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1176. [2024-12-02 12:29:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 871 states have (on average 1.3375430539609645) internal successors, (1165), 878 states have internal predecessors, (1165), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-12-02 12:29:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1717 transitions. [2024-12-02 12:29:46,080 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1717 transitions. Word has length 265 [2024-12-02 12:29:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:46,081 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1717 transitions. [2024-12-02 12:29:46,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:29:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1717 transitions. [2024-12-02 12:29:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-12-02 12:29:46,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:46,083 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:46,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:29:46,083 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:46,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -509025537, now seen corresponding path program 1 times [2024-12-02 12:29:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782624097] [2024-12-02 12:29:46,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:02,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782624097] [2024-12-02 12:30:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782624097] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:02,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:02,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:30:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173267355] [2024-12-02 12:30:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:02,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:30:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:02,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:30:02,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:30:02,665 INFO L87 Difference]: Start difference. First operand 1176 states and 1717 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:30:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:04,727 INFO L93 Difference]: Finished difference Result 1964 states and 2823 transitions. [2024-12-02 12:30:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:30:04,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 266 [2024-12-02 12:30:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:04,732 INFO L225 Difference]: With dead ends: 1964 [2024-12-02 12:30:04,732 INFO L226 Difference]: Without dead ends: 1563 [2024-12-02 12:30:04,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:30:04,734 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 727 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:04,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1079 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:30:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-12-02 12:30:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1183. [2024-12-02 12:30:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 878 states have (on average 1.3394077448747153) internal successors, (1176), 885 states have internal predecessors, (1176), 276 states have call successors, (276), 28 states have call predecessors, (276), 28 states have return successors, (276), 269 states have call predecessors, (276), 276 states have call successors, (276) [2024-12-02 12:30:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1728 transitions. [2024-12-02 12:30:04,803 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1728 transitions. Word has length 266 [2024-12-02 12:30:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:04,804 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1728 transitions. [2024-12-02 12:30:04,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:30:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1728 transitions. [2024-12-02 12:30:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:04,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:04,806 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:04,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:30:04,807 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:04,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1490990813, now seen corresponding path program 1 times [2024-12-02 12:30:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773615875] [2024-12-02 12:30:04,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:06,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:06,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773615875] [2024-12-02 12:30:06,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773615875] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:06,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:06,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:30:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402082010] [2024-12-02 12:30:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:06,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:30:06,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:06,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:30:06,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:30:06,194 INFO L87 Difference]: Start difference. First operand 1183 states and 1728 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:07,377 INFO L93 Difference]: Finished difference Result 2246 states and 3288 transitions. [2024-12-02 12:30:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:30:07,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:07,387 INFO L225 Difference]: With dead ends: 2246 [2024-12-02 12:30:07,387 INFO L226 Difference]: Without dead ends: 1840 [2024-12-02 12:30:07,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:30:07,390 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 323 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:07,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1681 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 12:30:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2024-12-02 12:30:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1772. [2024-12-02 12:30:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1336 states have (on average 1.3375748502994012) internal successors, (1787), 1351 states have internal predecessors, (1787), 396 states have call successors, (396), 39 states have call predecessors, (396), 39 states have return successors, (396), 381 states have call predecessors, (396), 396 states have call successors, (396) [2024-12-02 12:30:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2579 transitions. [2024-12-02 12:30:07,505 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2579 transitions. Word has length 267 [2024-12-02 12:30:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:07,506 INFO L471 AbstractCegarLoop]: Abstraction has 1772 states and 2579 transitions. [2024-12-02 12:30:07,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2579 transitions. [2024-12-02 12:30:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:07,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:07,508 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:07,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:30:07,508 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:07,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1489414179, now seen corresponding path program 1 times [2024-12-02 12:30:07,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954169524] [2024-12-02 12:30:07,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954169524] [2024-12-02 12:30:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954169524] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:30:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774701550] [2024-12-02 12:30:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:08,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:30:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:08,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:30:08,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:30:08,977 INFO L87 Difference]: Start difference. First operand 1772 states and 2579 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:09,711 INFO L93 Difference]: Finished difference Result 2509 states and 3547 transitions. [2024-12-02 12:30:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:30:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:09,718 INFO L225 Difference]: With dead ends: 2509 [2024-12-02 12:30:09,718 INFO L226 Difference]: Without dead ends: 2507 [2024-12-02 12:30:09,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:30:09,720 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 126 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:09,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1766 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:30:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2024-12-02 12:30:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2067. [2024-12-02 12:30:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1570 states have (on average 1.3363057324840764) internal successors, (2098), 1591 states have internal predecessors, (2098), 448 states have call successors, (448), 48 states have call predecessors, (448), 48 states have return successors, (448), 427 states have call predecessors, (448), 448 states have call successors, (448) [2024-12-02 12:30:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2994 transitions. [2024-12-02 12:30:09,840 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2994 transitions. Word has length 267 [2024-12-02 12:30:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:09,840 INFO L471 AbstractCegarLoop]: Abstraction has 2067 states and 2994 transitions. [2024-12-02 12:30:09,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2994 transitions. [2024-12-02 12:30:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:09,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:09,842 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:09,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:30:09,842 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:09,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1747579617, now seen corresponding path program 1 times [2024-12-02 12:30:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:09,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367719793] [2024-12-02 12:30:09,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:09,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367719793] [2024-12-02 12:30:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367719793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 12:30:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728956761] [2024-12-02 12:30:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:14,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:30:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:14,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:30:14,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:30:14,235 INFO L87 Difference]: Start difference. First operand 2067 states and 2994 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:17,901 INFO L93 Difference]: Finished difference Result 3139 states and 4479 transitions. [2024-12-02 12:30:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 12:30:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:17,907 INFO L225 Difference]: With dead ends: 3139 [2024-12-02 12:30:17,908 INFO L226 Difference]: Without dead ends: 2452 [2024-12-02 12:30:17,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 12:30:17,910 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 544 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:17,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1992 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 12:30:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2024-12-02 12:30:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2157. [2024-12-02 12:30:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1660 states have (on average 1.3385542168674698) internal successors, (2222), 1681 states have internal predecessors, (2222), 448 states have call successors, (448), 48 states have call predecessors, (448), 48 states have return successors, (448), 427 states have call predecessors, (448), 448 states have call successors, (448) [2024-12-02 12:30:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3118 transitions. [2024-12-02 12:30:18,028 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3118 transitions. Word has length 267 [2024-12-02 12:30:18,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:18,029 INFO L471 AbstractCegarLoop]: Abstraction has 2157 states and 3118 transitions. [2024-12-02 12:30:18,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3118 transitions. [2024-12-02 12:30:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:18,030 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:18,030 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:18,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:30:18,030 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:18,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1524112805, now seen corresponding path program 1 times [2024-12-02 12:30:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412667278] [2024-12-02 12:30:18,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:19,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:19,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412667278] [2024-12-02 12:30:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412667278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:19,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:19,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:30:19,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407399158] [2024-12-02 12:30:19,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:19,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:30:19,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:19,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:30:19,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:30:19,419 INFO L87 Difference]: Start difference. First operand 2157 states and 3118 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:20,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:20,595 INFO L93 Difference]: Finished difference Result 2466 states and 3505 transitions. [2024-12-02 12:30:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:30:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:20,603 INFO L225 Difference]: With dead ends: 2466 [2024-12-02 12:30:20,603 INFO L226 Difference]: Without dead ends: 2464 [2024-12-02 12:30:20,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:30:20,606 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 208 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:20,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1512 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:30:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-12-02 12:30:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2244. [2024-12-02 12:30:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1730 states have (on average 1.3277456647398844) internal successors, (2297), 1751 states have internal predecessors, (2297), 460 states have call successors, (460), 53 states have call predecessors, (460), 53 states have return successors, (460), 439 states have call predecessors, (460), 460 states have call successors, (460) [2024-12-02 12:30:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3217 transitions. [2024-12-02 12:30:20,738 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3217 transitions. Word has length 267 [2024-12-02 12:30:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:20,738 INFO L471 AbstractCegarLoop]: Abstraction has 2244 states and 3217 transitions. [2024-12-02 12:30:20,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3217 transitions. [2024-12-02 12:30:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:20,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:20,740 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:20,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:30:20,740 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:20,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 209550501, now seen corresponding path program 1 times [2024-12-02 12:30:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428889146] [2024-12-02 12:30:20,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428889146] [2024-12-02 12:30:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428889146] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:23,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:30:23,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538247103] [2024-12-02 12:30:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:23,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:30:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:23,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:30:23,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:30:23,183 INFO L87 Difference]: Start difference. First operand 2244 states and 3217 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:24,035 INFO L93 Difference]: Finished difference Result 2710 states and 3797 transitions. [2024-12-02 12:30:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:30:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:24,045 INFO L225 Difference]: With dead ends: 2710 [2024-12-02 12:30:24,045 INFO L226 Difference]: Without dead ends: 2708 [2024-12-02 12:30:24,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:30:24,046 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 90 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:24,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2048 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:30:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-12-02 12:30:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2381. [2024-12-02 12:30:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1864 states have (on average 1.3245708154506437) internal successors, (2469), 1886 states have internal predecessors, (2469), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-12-02 12:30:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3393 transitions. [2024-12-02 12:30:24,173 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3393 transitions. Word has length 267 [2024-12-02 12:30:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:24,174 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3393 transitions. [2024-12-02 12:30:24,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3393 transitions. [2024-12-02 12:30:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:24,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:24,175 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:24,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:30:24,175 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:24,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1373198179, now seen corresponding path program 1 times [2024-12-02 12:30:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002072406] [2024-12-02 12:30:24,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002072406] [2024-12-02 12:30:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002072406] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:27,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:27,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:30:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22394675] [2024-12-02 12:30:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:27,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:30:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:27,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:30:27,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:30:27,133 INFO L87 Difference]: Start difference. First operand 2381 states and 3393 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:30:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:28,764 INFO L93 Difference]: Finished difference Result 3766 states and 5363 transitions. [2024-12-02 12:30:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:30:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 267 [2024-12-02 12:30:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:28,773 INFO L225 Difference]: With dead ends: 3766 [2024-12-02 12:30:28,773 INFO L226 Difference]: Without dead ends: 2481 [2024-12-02 12:30:28,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:30:28,776 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 364 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:28,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1145 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 12:30:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2024-12-02 12:30:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2392. [2024-12-02 12:30:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1875 states have (on average 1.3114666666666666) internal successors, (2459), 1897 states have internal predecessors, (2459), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-12-02 12:30:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3383 transitions. [2024-12-02 12:30:28,911 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3383 transitions. Word has length 267 [2024-12-02 12:30:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:28,911 INFO L471 AbstractCegarLoop]: Abstraction has 2392 states and 3383 transitions. [2024-12-02 12:30:28,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:30:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3383 transitions. [2024-12-02 12:30:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:28,913 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:28,913 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:28,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:30:28,913 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:28,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash 58635875, now seen corresponding path program 1 times [2024-12-02 12:30:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329951784] [2024-12-02 12:30:28,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329951784] [2024-12-02 12:30:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329951784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:32,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:30:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536709762] [2024-12-02 12:30:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:32,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:30:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:32,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:30:32,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:30:32,430 INFO L87 Difference]: Start difference. First operand 2392 states and 3383 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:33,476 INFO L93 Difference]: Finished difference Result 2668 states and 3722 transitions. [2024-12-02 12:30:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:30:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:33,483 INFO L225 Difference]: With dead ends: 2668 [2024-12-02 12:30:33,483 INFO L226 Difference]: Without dead ends: 2666 [2024-12-02 12:30:33,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:30:33,484 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 165 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:33,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1761 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:30:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2024-12-02 12:30:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2329. [2024-12-02 12:30:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1812 states have (on average 1.304083885209713) internal successors, (2363), 1834 states have internal predecessors, (2363), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-12-02 12:30:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3287 transitions. [2024-12-02 12:30:33,623 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3287 transitions. Word has length 267 [2024-12-02 12:30:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:33,623 INFO L471 AbstractCegarLoop]: Abstraction has 2329 states and 3287 transitions. [2024-12-02 12:30:33,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3287 transitions. [2024-12-02 12:30:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:33,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:33,625 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:33,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:30:33,625 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:33,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash 93334501, now seen corresponding path program 1 times [2024-12-02 12:30:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56039777] [2024-12-02 12:30:33,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56039777] [2024-12-02 12:30:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56039777] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:37,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-12-02 12:30:37,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641440367] [2024-12-02 12:30:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:37,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:30:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:37,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:30:37,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:30:37,691 INFO L87 Difference]: Start difference. First operand 2329 states and 3287 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:30:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:42,339 INFO L93 Difference]: Finished difference Result 2557 states and 3574 transitions. [2024-12-02 12:30:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 12:30:42,340 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 267 [2024-12-02 12:30:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:42,345 INFO L225 Difference]: With dead ends: 2557 [2024-12-02 12:30:42,346 INFO L226 Difference]: Without dead ends: 2555 [2024-12-02 12:30:42,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 12:30:42,347 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 601 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:42,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1865 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 12:30:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2024-12-02 12:30:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2330. [2024-12-02 12:30:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1813 states have (on average 1.3039161610590182) internal successors, (2364), 1835 states have internal predecessors, (2364), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-12-02 12:30:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3288 transitions. [2024-12-02 12:30:42,488 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3288 transitions. Word has length 267 [2024-12-02 12:30:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:42,488 INFO L471 AbstractCegarLoop]: Abstraction has 2330 states and 3288 transitions. [2024-12-02 12:30:42,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 12:30:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3288 transitions. [2024-12-02 12:30:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-12-02 12:30:42,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:42,490 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:42,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:30:42,490 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:42,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash 516036327, now seen corresponding path program 1 times [2024-12-02 12:30:42,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585722656] [2024-12-02 12:30:42,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:44,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:44,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585722656] [2024-12-02 12:30:44,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585722656] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:44,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:44,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:30:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588731247] [2024-12-02 12:30:44,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:44,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:30:44,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:44,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:30:44,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:30:44,265 INFO L87 Difference]: Start difference. First operand 2330 states and 3288 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:45,474 INFO L93 Difference]: Finished difference Result 2386 states and 3349 transitions. [2024-12-02 12:30:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:30:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 267 [2024-12-02 12:30:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:45,480 INFO L225 Difference]: With dead ends: 2386 [2024-12-02 12:30:45,480 INFO L226 Difference]: Without dead ends: 2384 [2024-12-02 12:30:45,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:30:45,481 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 262 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:45,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1883 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:30:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2024-12-02 12:30:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2324. [2024-12-02 12:30:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 1807 states have (on average 1.3032650802434975) internal successors, (2355), 1829 states have internal predecessors, (2355), 462 states have call successors, (462), 54 states have call predecessors, (462), 54 states have return successors, (462), 440 states have call predecessors, (462), 462 states have call successors, (462) [2024-12-02 12:30:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3279 transitions. [2024-12-02 12:30:45,624 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3279 transitions. Word has length 267 [2024-12-02 12:30:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:45,624 INFO L471 AbstractCegarLoop]: Abstraction has 2324 states and 3279 transitions. [2024-12-02 12:30:45,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3279 transitions. [2024-12-02 12:30:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 12:30:45,626 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:45,626 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:45,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:30:45,626 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:45,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1227459428, now seen corresponding path program 1 times [2024-12-02 12:30:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498444441] [2024-12-02 12:30:45,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498444441] [2024-12-02 12:30:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498444441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:45,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:30:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876822153] [2024-12-02 12:30:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:30:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:45,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:30:45,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:30:45,791 INFO L87 Difference]: Start difference. First operand 2324 states and 3279 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:46,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:46,148 INFO L93 Difference]: Finished difference Result 4738 states and 6644 transitions. [2024-12-02 12:30:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:30:46,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 269 [2024-12-02 12:30:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:46,158 INFO L225 Difference]: With dead ends: 4738 [2024-12-02 12:30:46,158 INFO L226 Difference]: Without dead ends: 2679 [2024-12-02 12:30:46,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:30:46,164 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 65 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:46,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 817 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:30:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2024-12-02 12:30:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2529. [2024-12-02 12:30:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 1922 states have (on average 1.2819979188345474) internal successors, (2464), 1947 states have internal predecessors, (2464), 532 states have call successors, (532), 74 states have call predecessors, (532), 74 states have return successors, (532), 507 states have call predecessors, (532), 532 states have call successors, (532) [2024-12-02 12:30:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3528 transitions. [2024-12-02 12:30:46,479 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3528 transitions. Word has length 269 [2024-12-02 12:30:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:46,479 INFO L471 AbstractCegarLoop]: Abstraction has 2529 states and 3528 transitions. [2024-12-02 12:30:46,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3528 transitions. [2024-12-02 12:30:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-12-02 12:30:46,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:46,482 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:46,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:30:46,482 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:46,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1879472022, now seen corresponding path program 1 times [2024-12-02 12:30:46,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477712780] [2024-12-02 12:30:46,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:46,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:46,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477712780] [2024-12-02 12:30:46,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477712780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:46,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:46,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:30:46,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392764101] [2024-12-02 12:30:46,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:46,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:30:46,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:46,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:30:46,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:30:46,659 INFO L87 Difference]: Start difference. First operand 2529 states and 3528 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:47,060 INFO L93 Difference]: Finished difference Result 5691 states and 7889 transitions. [2024-12-02 12:30:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:30:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 269 [2024-12-02 12:30:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:47,071 INFO L225 Difference]: With dead ends: 5691 [2024-12-02 12:30:47,071 INFO L226 Difference]: Without dead ends: 3399 [2024-12-02 12:30:47,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:30:47,077 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 67 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:47,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 766 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:30:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2024-12-02 12:30:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3222. [2024-12-02 12:30:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2511 states have (on average 1.2819593787335724) internal successors, (3219), 2548 states have internal predecessors, (3219), 616 states have call successors, (616), 94 states have call predecessors, (616), 94 states have return successors, (616), 579 states have call predecessors, (616), 616 states have call successors, (616) [2024-12-02 12:30:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4451 transitions. [2024-12-02 12:30:47,438 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4451 transitions. Word has length 269 [2024-12-02 12:30:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:47,439 INFO L471 AbstractCegarLoop]: Abstraction has 3222 states and 4451 transitions. [2024-12-02 12:30:47,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4451 transitions. [2024-12-02 12:30:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-12-02 12:30:47,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:47,441 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:30:47,441 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:47,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1778241831, now seen corresponding path program 1 times [2024-12-02 12:30:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330392000] [2024-12-02 12:30:47,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330392000] [2024-12-02 12:30:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330392000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:30:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471761669] [2024-12-02 12:30:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:47,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:30:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:47,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:30:47,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:47,509 INFO L87 Difference]: Start difference. First operand 3222 states and 4451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:47,988 INFO L93 Difference]: Finished difference Result 7516 states and 10210 transitions. [2024-12-02 12:30:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:30:47,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 270 [2024-12-02 12:30:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:48,003 INFO L225 Difference]: With dead ends: 7516 [2024-12-02 12:30:48,003 INFO L226 Difference]: Without dead ends: 4533 [2024-12-02 12:30:48,009 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 12:30:48,010 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 55 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:48,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 412 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:30:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2024-12-02 12:30:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4408. [2024-12-02 12:30:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 3500 states have (on average 1.2394285714285713) internal successors, (4338), 3563 states have internal predecessors, (4338), 750 states have call successors, (750), 157 states have call predecessors, (750), 157 states have return successors, (750), 687 states have call predecessors, (750), 750 states have call successors, (750) [2024-12-02 12:30:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5838 transitions. [2024-12-02 12:30:48,489 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5838 transitions. Word has length 270 [2024-12-02 12:30:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:48,489 INFO L471 AbstractCegarLoop]: Abstraction has 4408 states and 5838 transitions. [2024-12-02 12:30:48,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5838 transitions. [2024-12-02 12:30:48,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:30:48,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:48,492 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:48,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 12:30:48,492 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:48,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -895746525, now seen corresponding path program 1 times [2024-12-02 12:30:48,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:48,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41900112] [2024-12-02 12:30:48,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41900112] [2024-12-02 12:30:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41900112] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:30:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525534549] [2024-12-02 12:30:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:51,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:30:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:51,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:30:51,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:30:51,573 INFO L87 Difference]: Start difference. First operand 4408 states and 5838 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:53,624 INFO L93 Difference]: Finished difference Result 4679 states and 6173 transitions. [2024-12-02 12:30:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:30:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:30:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:53,635 INFO L225 Difference]: With dead ends: 4679 [2024-12-02 12:30:53,636 INFO L226 Difference]: Without dead ends: 4677 [2024-12-02 12:30:53,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:30:53,637 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 215 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:53,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2263 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:30:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2024-12-02 12:30:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4585. [2024-12-02 12:30:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4585 states, 3632 states have (on average 1.236784140969163) internal successors, (4492), 3699 states have internal predecessors, (4492), 786 states have call successors, (786), 166 states have call predecessors, (786), 166 states have return successors, (786), 719 states have call predecessors, (786), 786 states have call successors, (786) [2024-12-02 12:30:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4585 states to 4585 states and 6064 transitions. [2024-12-02 12:30:54,009 INFO L78 Accepts]: Start accepts. Automaton has 4585 states and 6064 transitions. Word has length 271 [2024-12-02 12:30:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:54,009 INFO L471 AbstractCegarLoop]: Abstraction has 4585 states and 6064 transitions. [2024-12-02 12:30:54,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4585 states and 6064 transitions. [2024-12-02 12:30:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:30:54,011 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:54,011 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:54,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 12:30:54,011 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:54,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1469735645, now seen corresponding path program 1 times [2024-12-02 12:30:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160130339] [2024-12-02 12:30:54,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:30:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160130339] [2024-12-02 12:30:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160130339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:55,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:30:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193229924] [2024-12-02 12:30:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:55,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:30:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:55,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:30:55,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:30:55,970 INFO L87 Difference]: Start difference. First operand 4585 states and 6064 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:57,325 INFO L93 Difference]: Finished difference Result 5303 states and 6933 transitions. [2024-12-02 12:30:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:30:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:30:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:57,339 INFO L225 Difference]: With dead ends: 5303 [2024-12-02 12:30:57,339 INFO L226 Difference]: Without dead ends: 5301 [2024-12-02 12:30:57,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:30:57,342 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 146 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:57,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2388 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:30:57,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2024-12-02 12:30:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4410. [2024-12-02 12:30:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3551 states have (on average 1.2441565756125035) internal successors, (4418), 3609 states have internal predecessors, (4418), 710 states have call successors, (710), 148 states have call predecessors, (710), 148 states have return successors, (710), 652 states have call predecessors, (710), 710 states have call successors, (710) [2024-12-02 12:30:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 5838 transitions. [2024-12-02 12:30:57,684 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 5838 transitions. Word has length 271 [2024-12-02 12:30:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:57,685 INFO L471 AbstractCegarLoop]: Abstraction has 4410 states and 5838 transitions. [2024-12-02 12:30:57,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:30:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 5838 transitions. [2024-12-02 12:30:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:30:57,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:57,687 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:57,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 12:30:57,687 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:57,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1814114401, now seen corresponding path program 1 times [2024-12-02 12:30:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683259870] [2024-12-02 12:30:57,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:57,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:02,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683259870] [2024-12-02 12:31:02,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683259870] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:02,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:02,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-12-02 12:31:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98312090] [2024-12-02 12:31:02,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:02,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:31:02,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:02,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:31:02,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:31:02,331 INFO L87 Difference]: Start difference. First operand 4410 states and 5838 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:09,354 INFO L93 Difference]: Finished difference Result 5755 states and 7406 transitions. [2024-12-02 12:31:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 12:31:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:09,366 INFO L225 Difference]: With dead ends: 5755 [2024-12-02 12:31:09,366 INFO L226 Difference]: Without dead ends: 5753 [2024-12-02 12:31:09,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=383, Invalid=1779, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 12:31:09,369 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 610 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:09,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 2558 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:31:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2024-12-02 12:31:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 4402. [2024-12-02 12:31:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3543 states have (on average 1.244425627998871) internal successors, (4409), 3601 states have internal predecessors, (4409), 710 states have call successors, (710), 148 states have call predecessors, (710), 148 states have return successors, (710), 652 states have call predecessors, (710), 710 states have call successors, (710) [2024-12-02 12:31:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5829 transitions. [2024-12-02 12:31:09,725 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5829 transitions. Word has length 271 [2024-12-02 12:31:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:09,725 INFO L471 AbstractCegarLoop]: Abstraction has 4402 states and 5829 transitions. [2024-12-02 12:31:09,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5829 transitions. [2024-12-02 12:31:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:09,727 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:09,727 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:09,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 12:31:09,727 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:09,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1810872869, now seen corresponding path program 1 times [2024-12-02 12:31:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2283975] [2024-12-02 12:31:09,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:11,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2283975] [2024-12-02 12:31:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2283975] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:31:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561079079] [2024-12-02 12:31:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:11,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:31:11,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:11,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:31:11,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:31:11,475 INFO L87 Difference]: Start difference. First operand 4402 states and 5829 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:13,277 INFO L93 Difference]: Finished difference Result 4749 states and 6245 transitions. [2024-12-02 12:31:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:31:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:13,286 INFO L225 Difference]: With dead ends: 4749 [2024-12-02 12:31:13,286 INFO L226 Difference]: Without dead ends: 4747 [2024-12-02 12:31:13,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:31:13,288 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 199 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:13,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 2199 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 12:31:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2024-12-02 12:31:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4717. [2024-12-02 12:31:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3769 states have (on average 1.2345449721411514) internal successors, (4653), 3833 states have internal predecessors, (4653), 778 states have call successors, (778), 169 states have call predecessors, (778), 169 states have return successors, (778), 714 states have call predecessors, (778), 778 states have call successors, (778) [2024-12-02 12:31:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6209 transitions. [2024-12-02 12:31:13,660 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6209 transitions. Word has length 271 [2024-12-02 12:31:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:13,660 INFO L471 AbstractCegarLoop]: Abstraction has 4717 states and 6209 transitions. [2024-12-02 12:31:13,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6209 transitions. [2024-12-02 12:31:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:13,662 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:13,662 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:13,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 12:31:13,662 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:13,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1236883749, now seen corresponding path program 1 times [2024-12-02 12:31:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:13,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705842638] [2024-12-02 12:31:13,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:13,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:17,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:17,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705842638] [2024-12-02 12:31:17,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705842638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:17,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:17,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 12:31:17,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810176053] [2024-12-02 12:31:17,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:17,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:31:17,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:17,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:31:17,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:31:17,232 INFO L87 Difference]: Start difference. First operand 4717 states and 6209 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:19,663 INFO L93 Difference]: Finished difference Result 6522 states and 8354 transitions. [2024-12-02 12:31:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:31:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:19,672 INFO L225 Difference]: With dead ends: 6522 [2024-12-02 12:31:19,672 INFO L226 Difference]: Without dead ends: 6520 [2024-12-02 12:31:19,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:31:19,674 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 166 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:19,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2633 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:31:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2024-12-02 12:31:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 4777. [2024-12-02 12:31:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 3826 states have (on average 1.233925771040251) internal successors, (4721), 3891 states have internal predecessors, (4721), 780 states have call successors, (780), 170 states have call predecessors, (780), 170 states have return successors, (780), 715 states have call predecessors, (780), 780 states have call successors, (780) [2024-12-02 12:31:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6281 transitions. [2024-12-02 12:31:20,057 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6281 transitions. Word has length 271 [2024-12-02 12:31:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:20,057 INFO L471 AbstractCegarLoop]: Abstraction has 4777 states and 6281 transitions. [2024-12-02 12:31:20,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6281 transitions. [2024-12-02 12:31:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:20,059 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:20,059 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:20,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 12:31:20,059 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:20,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1342560066, now seen corresponding path program 1 times [2024-12-02 12:31:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552985217] [2024-12-02 12:31:20,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552985217] [2024-12-02 12:31:20,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552985217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:20,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:20,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:31:20,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185047458] [2024-12-02 12:31:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:20,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:31:20,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:20,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:31:20,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:31:20,149 INFO L87 Difference]: Start difference. First operand 4777 states and 6281 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:20,523 INFO L93 Difference]: Finished difference Result 8699 states and 11444 transitions. [2024-12-02 12:31:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:31:20,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:20,531 INFO L225 Difference]: With dead ends: 8699 [2024-12-02 12:31:20,532 INFO L226 Difference]: Without dead ends: 4170 [2024-12-02 12:31:20,537 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 12:31:20,537 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 43 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:20,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 406 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:31:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2024-12-02 12:31:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3595. [2024-12-02 12:31:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 2862 states have (on average 1.2354996505939901) internal successors, (3536), 2896 states have internal predecessors, (3536), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-12-02 12:31:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4756 transitions. [2024-12-02 12:31:20,809 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4756 transitions. Word has length 271 [2024-12-02 12:31:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:20,809 INFO L471 AbstractCegarLoop]: Abstraction has 3595 states and 4756 transitions. [2024-12-02 12:31:20,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4756 transitions. [2024-12-02 12:31:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:20,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:20,811 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:20,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 12:31:20,811 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:20,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash 582665187, now seen corresponding path program 1 times [2024-12-02 12:31:20,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:20,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942452269] [2024-12-02 12:31:20,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:20,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942452269] [2024-12-02 12:31:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942452269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:24,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:24,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 12:31:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277970968] [2024-12-02 12:31:24,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:24,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 12:31:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:24,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 12:31:24,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:31:24,588 INFO L87 Difference]: Start difference. First operand 3595 states and 4756 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:27,600 INFO L93 Difference]: Finished difference Result 3904 states and 5097 transitions. [2024-12-02 12:31:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 12:31:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-12-02 12:31:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:27,607 INFO L225 Difference]: With dead ends: 3904 [2024-12-02 12:31:27,607 INFO L226 Difference]: Without dead ends: 3902 [2024-12-02 12:31:27,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 12:31:27,609 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 567 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:27,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 2172 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 12:31:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2024-12-02 12:31:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3609. [2024-12-02 12:31:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 2876 states have (on average 1.2353963838664812) internal successors, (3553), 2910 states have internal predecessors, (3553), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-12-02 12:31:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4773 transitions. [2024-12-02 12:31:27,888 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4773 transitions. Word has length 271 [2024-12-02 12:31:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:27,888 INFO L471 AbstractCegarLoop]: Abstraction has 3609 states and 4773 transitions. [2024-12-02 12:31:27,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4773 transitions. [2024-12-02 12:31:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:27,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:27,890 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:27,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 12:31:27,890 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash 8676067, now seen corresponding path program 1 times [2024-12-02 12:31:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3811721] [2024-12-02 12:31:27,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:33,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:33,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3811721] [2024-12-02 12:31:33,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3811721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:33,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 12:31:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361118468] [2024-12-02 12:31:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:33,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:31:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:33,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:31:33,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:31:33,937 INFO L87 Difference]: Start difference. First operand 3609 states and 4773 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:39,107 INFO L93 Difference]: Finished difference Result 3834 states and 5013 transitions. [2024-12-02 12:31:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 12:31:39,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-12-02 12:31:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:39,113 INFO L225 Difference]: With dead ends: 3834 [2024-12-02 12:31:39,114 INFO L226 Difference]: Without dead ends: 3832 [2024-12-02 12:31:39,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 12:31:39,115 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 374 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:39,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 2348 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:31:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2024-12-02 12:31:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3603. [2024-12-02 12:31:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 2870 states have (on average 1.235191637630662) internal successors, (3545), 2904 states have internal predecessors, (3545), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-12-02 12:31:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4765 transitions. [2024-12-02 12:31:39,396 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4765 transitions. Word has length 271 [2024-12-02 12:31:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:39,396 INFO L471 AbstractCegarLoop]: Abstraction has 3603 states and 4765 transitions. [2024-12-02 12:31:39,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4765 transitions. [2024-12-02 12:31:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:39,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:39,398 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:39,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 12:31:39,398 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:39,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1005682715, now seen corresponding path program 1 times [2024-12-02 12:31:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899795669] [2024-12-02 12:31:39,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899795669] [2024-12-02 12:31:43,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899795669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:43,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 12:31:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646727452] [2024-12-02 12:31:43,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:43,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:31:43,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:43,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:31:43,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:31:43,245 INFO L87 Difference]: Start difference. First operand 3603 states and 4765 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:46,308 INFO L93 Difference]: Finished difference Result 3810 states and 4990 transitions. [2024-12-02 12:31:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:31:46,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-12-02 12:31:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:46,314 INFO L225 Difference]: With dead ends: 3810 [2024-12-02 12:31:46,315 INFO L226 Difference]: Without dead ends: 3808 [2024-12-02 12:31:46,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:31:46,316 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 332 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:46,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2183 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 12:31:46,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2024-12-02 12:31:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3604. [2024-12-02 12:31:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2871 states have (on average 1.2351097178683386) internal successors, (3546), 2905 states have internal predecessors, (3546), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-12-02 12:31:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 4766 transitions. [2024-12-02 12:31:46,602 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 4766 transitions. Word has length 271 [2024-12-02 12:31:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:46,602 INFO L471 AbstractCegarLoop]: Abstraction has 3604 states and 4766 transitions. [2024-12-02 12:31:46,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:31:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 4766 transitions. [2024-12-02 12:31:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:46,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:46,604 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:46,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 12:31:46,604 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1954663011, now seen corresponding path program 1 times [2024-12-02 12:31:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499955627] [2024-12-02 12:31:46,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499955627] [2024-12-02 12:31:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499955627] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 12:31:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847577756] [2024-12-02 12:31:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:48,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:31:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:48,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:31:48,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:31:48,937 INFO L87 Difference]: Start difference. First operand 3604 states and 4766 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:52,416 INFO L93 Difference]: Finished difference Result 4124 states and 5353 transitions. [2024-12-02 12:31:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 12:31:52,416 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:52,423 INFO L225 Difference]: With dead ends: 4124 [2024-12-02 12:31:52,424 INFO L226 Difference]: Without dead ends: 4122 [2024-12-02 12:31:52,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2024-12-02 12:31:52,425 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 301 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:52,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 2627 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:31:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2024-12-02 12:31:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3571. [2024-12-02 12:31:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 2838 states have (on average 1.233967582804792) internal successors, (3502), 2872 states have internal predecessors, (3502), 610 states have call successors, (610), 122 states have call predecessors, (610), 122 states have return successors, (610), 576 states have call predecessors, (610), 610 states have call successors, (610) [2024-12-02 12:31:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4722 transitions. [2024-12-02 12:31:52,715 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4722 transitions. Word has length 271 [2024-12-02 12:31:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:52,715 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4722 transitions. [2024-12-02 12:31:52,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4722 transitions. [2024-12-02 12:31:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:52,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:52,717 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 12:31:52,717 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:52,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1377432359, now seen corresponding path program 1 times [2024-12-02 12:31:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959917031] [2024-12-02 12:31:52,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:54,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959917031] [2024-12-02 12:31:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959917031] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:31:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744955234] [2024-12-02 12:31:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:54,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:31:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:54,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:31:54,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:31:54,474 INFO L87 Difference]: Start difference. First operand 3571 states and 4722 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:55,640 INFO L93 Difference]: Finished difference Result 4065 states and 5266 transitions. [2024-12-02 12:31:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:31:55,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:31:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:55,647 INFO L225 Difference]: With dead ends: 4065 [2024-12-02 12:31:55,647 INFO L226 Difference]: Without dead ends: 4063 [2024-12-02 12:31:55,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:31:55,648 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 96 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:55,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 2286 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:31:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-12-02 12:31:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 3529. [2024-12-02 12:31:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2804 states have (on average 1.2346647646219686) internal successors, (3462), 2835 states have internal predecessors, (3462), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-12-02 12:31:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4666 transitions. [2024-12-02 12:31:55,932 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4666 transitions. Word has length 271 [2024-12-02 12:31:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:55,932 INFO L471 AbstractCegarLoop]: Abstraction has 3529 states and 4666 transitions. [2024-12-02 12:31:55,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:31:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4666 transitions. [2024-12-02 12:31:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:31:55,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:55,934 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:31:55,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 12:31:55,934 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:55,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 366315109, now seen corresponding path program 1 times [2024-12-02 12:31:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433276662] [2024-12-02 12:31:55,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:31:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433276662] [2024-12-02 12:31:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433276662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 12:31:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930484011] [2024-12-02 12:31:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:58,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:31:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:58,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:31:58,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:31:58,708 INFO L87 Difference]: Start difference. First operand 3529 states and 4666 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:32:00,875 INFO L93 Difference]: Finished difference Result 3847 states and 5031 transitions. [2024-12-02 12:32:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 12:32:00,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:32:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:32:00,881 INFO L225 Difference]: With dead ends: 3847 [2024-12-02 12:32:00,881 INFO L226 Difference]: Without dead ends: 3845 [2024-12-02 12:32:00,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:32:00,883 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 214 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:32:00,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2024 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 12:32:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2024-12-02 12:32:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3506. [2024-12-02 12:32:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 2781 states have (on average 1.2351672060409924) internal successors, (3435), 2812 states have internal predecessors, (3435), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-12-02 12:32:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4639 transitions. [2024-12-02 12:32:01,165 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4639 transitions. Word has length 271 [2024-12-02 12:32:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:32:01,165 INFO L471 AbstractCegarLoop]: Abstraction has 3506 states and 4639 transitions. [2024-12-02 12:32:01,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4639 transitions. [2024-12-02 12:32:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:32:01,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:32:01,167 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:01,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 12:32:01,167 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:32:01,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:32:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash 723213797, now seen corresponding path program 1 times [2024-12-02 12:32:01,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:32:01,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264077691] [2024-12-02 12:32:01,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:32:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:32:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:32:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:32:02,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:32:02,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264077691] [2024-12-02 12:32:02,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264077691] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:32:02,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:32:02,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:32:02,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109691489] [2024-12-02 12:32:02,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:32:02,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:32:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:32:02,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:32:02,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:32:02,975 INFO L87 Difference]: Start difference. First operand 3506 states and 4639 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:32:04,262 INFO L93 Difference]: Finished difference Result 3690 states and 4847 transitions. [2024-12-02 12:32:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:32:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:32:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:32:04,269 INFO L225 Difference]: With dead ends: 3690 [2024-12-02 12:32:04,269 INFO L226 Difference]: Without dead ends: 3688 [2024-12-02 12:32:04,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:32:04,270 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 148 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:32:04,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2026 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:32:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2024-12-02 12:32:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3537. [2024-12-02 12:32:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 2812 states have (on average 1.2357752489331437) internal successors, (3475), 2843 states have internal predecessors, (3475), 602 states have call successors, (602), 122 states have call predecessors, (602), 122 states have return successors, (602), 571 states have call predecessors, (602), 602 states have call successors, (602) [2024-12-02 12:32:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 4679 transitions. [2024-12-02 12:32:04,548 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 4679 transitions. Word has length 271 [2024-12-02 12:32:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:32:04,548 INFO L471 AbstractCegarLoop]: Abstraction has 3537 states and 4679 transitions. [2024-12-02 12:32:04,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 4679 transitions. [2024-12-02 12:32:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:32:04,551 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:32:04,551 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:04,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 12:32:04,551 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:32:04,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:32:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 149224677, now seen corresponding path program 1 times [2024-12-02 12:32:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:32:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557571878] [2024-12-02 12:32:04,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:32:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:32:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:32:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:32:07,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:32:07,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557571878] [2024-12-02 12:32:07,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557571878] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:32:07,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:32:07,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 12:32:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641347828] [2024-12-02 12:32:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:32:07,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:32:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:32:07,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:32:07,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:32:07,512 INFO L87 Difference]: Start difference. First operand 3537 states and 4679 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:32:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:32:10,679 INFO L93 Difference]: Finished difference Result 3669 states and 4828 transitions. [2024-12-02 12:32:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:32:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 271 [2024-12-02 12:32:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:32:10,686 INFO L225 Difference]: With dead ends: 3669 [2024-12-02 12:32:10,686 INFO L226 Difference]: Without dead ends: 3667 [2024-12-02 12:32:10,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:32:10,688 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 289 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:32:10,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 2050 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 12:32:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-12-02 12:32:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3648. [2024-12-02 12:32:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 2889 states have (on average 1.2305295950155763) internal successors, (3555), 2923 states have internal predecessors, (3555), 626 states have call successors, (626), 132 states have call predecessors, (626), 132 states have return successors, (626), 592 states have call predecessors, (626), 626 states have call successors, (626) [2024-12-02 12:32:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 4807 transitions. [2024-12-02 12:32:11,024 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 4807 transitions. Word has length 271 [2024-12-02 12:32:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:32:11,025 INFO L471 AbstractCegarLoop]: Abstraction has 3648 states and 4807 transitions. [2024-12-02 12:32:11,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-12-02 12:32:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 4807 transitions. [2024-12-02 12:32:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 12:32:11,026 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:32:11,026 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:11,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 12:32:11,026 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:32:11,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:32:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1439123225, now seen corresponding path program 1 times [2024-12-02 12:32:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:32:11,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80859050] [2024-12-02 12:32:11,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:32:11,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:32:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:32:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-12-02 12:32:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:32:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80859050] [2024-12-02 12:32:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80859050] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:32:13,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:32:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:32:13,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180253609] [2024-12-02 12:32:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:32:13,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:32:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:32:13,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:32:13,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:32:13,637 INFO L87 Difference]: Start difference. First operand 3648 states and 4807 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:32:15,118 INFO L93 Difference]: Finished difference Result 4016 states and 5212 transitions. [2024-12-02 12:32:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:32:15,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 271 [2024-12-02 12:32:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:32:15,125 INFO L225 Difference]: With dead ends: 4016 [2024-12-02 12:32:15,125 INFO L226 Difference]: Without dead ends: 4014 [2024-12-02 12:32:15,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:32:15,126 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 76 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:32:15,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2290 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 12:32:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2024-12-02 12:32:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3640. [2024-12-02 12:32:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 2881 states have (on average 1.230822631030892) internal successors, (3546), 2915 states have internal predecessors, (3546), 626 states have call successors, (626), 132 states have call predecessors, (626), 132 states have return successors, (626), 592 states have call predecessors, (626), 626 states have call successors, (626) [2024-12-02 12:32:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 4798 transitions. [2024-12-02 12:32:15,443 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 4798 transitions. Word has length 271 [2024-12-02 12:32:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:32:15,443 INFO L471 AbstractCegarLoop]: Abstraction has 3640 states and 4798 transitions. [2024-12-02 12:32:15,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-12-02 12:32:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 4798 transitions. [2024-12-02 12:32:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 12:32:15,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:32:15,445 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:15,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 12:32:15,445 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:32:15,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:32:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1627934799, now seen corresponding path program 1 times [2024-12-02 12:32:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:32:15,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405438751] [2024-12-02 12:32:15,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:32:15,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:32:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:32:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 354 refuted. 0 times theorem prover too weak. 2988 trivial. 0 not checked. [2024-12-02 12:32:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:32:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405438751] [2024-12-02 12:32:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405438751] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:32:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473733380] [2024-12-02 12:32:16,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:32:16,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:32:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:32:16,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:32:16,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c435d997-99de-4a72-bec4-09f037caef75/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:32:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:32:16,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 12:32:16,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:32:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1777 proven. 249 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2024-12-02 12:32:19,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:32:47,353 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 31 DAG size of output: 27 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 12:33:07,025 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 30 DAG size of output: 23 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 12:33:36,624 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 12:34:58,122 WARN L286 SmtUtils]: Spent 56.12s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 12:35:06,134 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)