./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/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 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:53:30,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:53:30,675 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:53:30,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:53:30,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:53:30,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:53:30,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:53:30,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:53:30,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:53:30,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:53:30,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:53:30,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:53:30,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:53:30,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:53:30,701 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:53:30,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:53:30,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:53:30,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:53:30,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:53:30,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:53:30,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:53:30,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:53:30,703 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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/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 -> 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 [2024-12-02 12:53:30,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:53:30,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:53:30,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:53:30,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:53:30,947 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:53:30,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-12-02 12:53:33,592 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/data/802ddb363/92c2342db9954552ad4491745a60e0e4/FLAG3731476cb [2024-12-02 12:53:33,802 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:53:33,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-12-02 12:53:33,812 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/data/802ddb363/92c2342db9954552ad4491745a60e0e4/FLAG3731476cb [2024-12-02 12:53:34,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/data/802ddb363/92c2342db9954552ad4491745a60e0e4 [2024-12-02 12:53:34,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:53:34,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:53:34,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:53:34,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:53:34,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:53:34,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aed54dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34, skipping insertion in model container [2024-12-02 12:53:34,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:53:34,265 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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2024-12-02 12:53:34,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:53:34,319 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:53:34,327 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_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2024-12-02 12:53:34,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:53:34,367 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:53:34,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34 WrapperNode [2024-12-02 12:53:34,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:53:34,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:53:34,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:53:34,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:53:34,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,405 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2024-12-02 12:53:34,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:53:34,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:53:34,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:53:34,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:53:34,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,416 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,432 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 12:53:34,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,441 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:53:34,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:53:34,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:53:34,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:53:34,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (1/1) ... [2024-12-02 12:53:34,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:53:34,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:34,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:53:34,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:53:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:53:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:53:34,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:53:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:53:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:53:34,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:53:34,576 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:53:34,578 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:53:34,943 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-12-02 12:53:34,943 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:53:34,952 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:53:34,952 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:53:34,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:53:34 BoogieIcfgContainer [2024-12-02 12:53:34,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:53:34,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:53:34,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:53:34,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:53:34,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:53:34" (1/3) ... [2024-12-02 12:53:34,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14837ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:53:34, skipping insertion in model container [2024-12-02 12:53:34,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:53:34" (2/3) ... [2024-12-02 12:53:34,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14837ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:53:34, skipping insertion in model container [2024-12-02 12:53:34,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:53:34" (3/3) ... [2024-12-02 12:53:34,959 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-12-02 12:53:34,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:53:34,981 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:53:35,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:53:35,042 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;@422c28a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:53:35,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:53:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 12:53:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 12:53:35,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:35,058 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:35,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:35,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1302440786, now seen corresponding path program 1 times [2024-12-02 12:53:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111182267] [2024-12-02 12:53:35,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 12:53:35,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111182267] [2024-12-02 12:53:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111182267] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:35,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705392493] [2024-12-02 12:53:35,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:35,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:35,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:53:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:35,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:53:35,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 12:53:35,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705392493] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:35,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:53:35,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108971533] [2024-12-02 12:53:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:35,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:53:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:35,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:53:35,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:53:35,553 INFO L87 Difference]: Start difference. First operand has 99 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:35,579 INFO L93 Difference]: Finished difference Result 191 states and 331 transitions. [2024-12-02 12:53:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:53:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-12-02 12:53:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:35,586 INFO L225 Difference]: With dead ends: 191 [2024-12-02 12:53:35,586 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 12:53:35,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 12:53:35,591 INFO L435 NwaCegarLoop]: 148 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, 148 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 12:53:35,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:53:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 12:53:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-02 12:53:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 12:53:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 148 transitions. [2024-12-02 12:53:35,627 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 148 transitions. Word has length 177 [2024-12-02 12:53:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:35,627 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 148 transitions. [2024-12-02 12:53:35,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 148 transitions. [2024-12-02 12:53:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 12:53:35,630 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:35,631 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:35,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:53:35,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:53:35,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:35,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1470251024, now seen corresponding path program 1 times [2024-12-02 12:53:35,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:35,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556664149] [2024-12-02 12:53:35,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:36,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:36,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556664149] [2024-12-02 12:53:36,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556664149] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:36,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:36,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:53:36,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227663341] [2024-12-02 12:53:36,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:36,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:36,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:36,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:53:36,261 INFO L87 Difference]: Start difference. First operand 95 states and 148 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:36,462 INFO L93 Difference]: Finished difference Result 309 states and 483 transitions. [2024-12-02 12:53:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:53:36,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-12-02 12:53:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:36,465 INFO L225 Difference]: With dead ends: 309 [2024-12-02 12:53:36,466 INFO L226 Difference]: Without dead ends: 217 [2024-12-02 12:53:36,466 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 12:53:36,467 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 154 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:36,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 462 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:53:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-12-02 12:53:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 187. [2024-12-02 12:53:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 130 states have internal predecessors, (185), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 12:53:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 293 transitions. [2024-12-02 12:53:36,500 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 293 transitions. Word has length 177 [2024-12-02 12:53:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:36,501 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 293 transitions. [2024-12-02 12:53:36,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 293 transitions. [2024-12-02 12:53:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 12:53:36,504 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:36,505 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:36,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:53:36,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash 219795577, now seen corresponding path program 1 times [2024-12-02 12:53:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563688396] [2024-12-02 12:53:36,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563688396] [2024-12-02 12:53:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563688396] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:36,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:53:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730998382] [2024-12-02 12:53:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:36,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:53:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:36,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:53:36,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:53:36,860 INFO L87 Difference]: Start difference. First operand 187 states and 293 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:37,174 INFO L93 Difference]: Finished difference Result 550 states and 862 transitions. [2024-12-02 12:53:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2024-12-02 12:53:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:37,179 INFO L225 Difference]: With dead ends: 550 [2024-12-02 12:53:37,179 INFO L226 Difference]: Without dead ends: 366 [2024-12-02 12:53:37,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:53:37,181 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 225 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:37,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 456 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:53:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-12-02 12:53:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 191. [2024-12-02 12:53:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 134 states have (on average 1.4104477611940298) internal successors, (189), 134 states have internal predecessors, (189), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 12:53:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 297 transitions. [2024-12-02 12:53:37,224 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 297 transitions. Word has length 178 [2024-12-02 12:53:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:37,224 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 297 transitions. [2024-12-02 12:53:37,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 297 transitions. [2024-12-02 12:53:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:37,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:37,227 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:37,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:53:37,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:37,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1006525000, now seen corresponding path program 1 times [2024-12-02 12:53:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916475885] [2024-12-02 12:53:37,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916475885] [2024-12-02 12:53:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916475885] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:53:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927320481] [2024-12-02 12:53:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:39,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:53:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:39,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:53:39,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:53:39,218 INFO L87 Difference]: Start difference. First operand 191 states and 297 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:40,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:40,037 INFO L93 Difference]: Finished difference Result 603 states and 923 transitions. [2024-12-02 12:53:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:53:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:53:40,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:40,041 INFO L225 Difference]: With dead ends: 603 [2024-12-02 12:53:40,041 INFO L226 Difference]: Without dead ends: 415 [2024-12-02 12:53:40,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:40,043 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 287 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:40,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 480 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:53:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-12-02 12:53:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 339. [2024-12-02 12:53:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 254 states have (on average 1.437007874015748) internal successors, (365), 254 states have internal predecessors, (365), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:53:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 527 transitions. [2024-12-02 12:53:40,083 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 527 transitions. Word has length 179 [2024-12-02 12:53:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:40,083 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 527 transitions. [2024-12-02 12:53:40,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 527 transitions. [2024-12-02 12:53:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:40,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:40,086 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:40,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:53:40,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:40,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1686583370, now seen corresponding path program 1 times [2024-12-02 12:53:40,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422116019] [2024-12-02 12:53:40,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422116019] [2024-12-02 12:53:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422116019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:53:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466217838] [2024-12-02 12:53:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:40,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:40,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:40,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:53:40,459 INFO L87 Difference]: Start difference. First operand 339 states and 527 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:40,736 INFO L93 Difference]: Finished difference Result 583 states and 902 transitions. [2024-12-02 12:53:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:53:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:53:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:40,739 INFO L225 Difference]: With dead ends: 583 [2024-12-02 12:53:40,739 INFO L226 Difference]: Without dead ends: 329 [2024-12-02 12:53:40,740 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 12:53:40,741 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 107 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:40,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 371 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:53:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-12-02 12:53:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 263. [2024-12-02 12:53:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.3932584269662922) internal successors, (248), 178 states have internal predecessors, (248), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:53:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 410 transitions. [2024-12-02 12:53:40,789 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 410 transitions. Word has length 179 [2024-12-02 12:53:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:40,790 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 410 transitions. [2024-12-02 12:53:40,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 410 transitions. [2024-12-02 12:53:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:40,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:40,792 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:53:40,792 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:40,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 4592250, now seen corresponding path program 1 times [2024-12-02 12:53:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145078519] [2024-12-02 12:53:40,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145078519] [2024-12-02 12:53:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145078519] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 12:53:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329914783] [2024-12-02 12:53:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:46,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:53:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:46,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:53:46,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:46,521 INFO L87 Difference]: Start difference. First operand 263 states and 410 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:47,947 INFO L93 Difference]: Finished difference Result 600 states and 912 transitions. [2024-12-02 12:53:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:53:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:53:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:47,950 INFO L225 Difference]: With dead ends: 600 [2024-12-02 12:53:47,950 INFO L226 Difference]: Without dead ends: 401 [2024-12-02 12:53:47,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:53:47,952 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 286 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:47,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 719 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:53:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-12-02 12:53:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 331. [2024-12-02 12:53:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 246 states have internal predecessors, (348), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:53:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 510 transitions. [2024-12-02 12:53:47,994 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 510 transitions. Word has length 179 [2024-12-02 12:53:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:47,994 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 510 transitions. [2024-12-02 12:53:47,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 510 transitions. [2024-12-02 12:53:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:47,996 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:47,997 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:47,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:53:47,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:47,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -675466120, now seen corresponding path program 1 times [2024-12-02 12:53:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179983170] [2024-12-02 12:53:47,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179983170] [2024-12-02 12:53:52,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179983170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:52,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:52,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:53:52,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867383677] [2024-12-02 12:53:52,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:52,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:53:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:52,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:53:52,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:52,345 INFO L87 Difference]: Start difference. First operand 331 states and 510 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:54,377 INFO L93 Difference]: Finished difference Result 778 states and 1170 transitions. [2024-12-02 12:53:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 12:53:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:53:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:54,381 INFO L225 Difference]: With dead ends: 778 [2024-12-02 12:53:54,381 INFO L226 Difference]: Without dead ends: 590 [2024-12-02 12:53:54,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:53:54,382 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 421 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:54,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 487 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:53:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-12-02 12:53:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 439. [2024-12-02 12:53:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 342 states have (on average 1.4035087719298245) internal successors, (480), 344 states have internal predecessors, (480), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-12-02 12:53:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 662 transitions. [2024-12-02 12:53:54,434 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 662 transitions. Word has length 179 [2024-12-02 12:53:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:54,435 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 662 transitions. [2024-12-02 12:53:54,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 662 transitions. [2024-12-02 12:53:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:54,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:54,438 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:54,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:53:54,438 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:54,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:54,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1099541242, now seen corresponding path program 1 times [2024-12-02 12:53:54,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:54,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237115338] [2024-12-02 12:53:54,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:56,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237115338] [2024-12-02 12:53:56,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237115338] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:56,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:56,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 12:53:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986945598] [2024-12-02 12:53:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:56,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:53:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:56,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:53:56,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:53:56,795 INFO L87 Difference]: Start difference. First operand 439 states and 662 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:57,960 INFO L93 Difference]: Finished difference Result 946 states and 1406 transitions. [2024-12-02 12:53:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:53:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:53:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:57,965 INFO L225 Difference]: With dead ends: 946 [2024-12-02 12:53:57,965 INFO L226 Difference]: Without dead ends: 658 [2024-12-02 12:53:57,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:53:57,966 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 294 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:57,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 573 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:53:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-12-02 12:53:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 480. [2024-12-02 12:53:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.391644908616188) internal successors, (533), 385 states have internal predecessors, (533), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-12-02 12:53:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions. [2024-12-02 12:53:58,014 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 179 [2024-12-02 12:53:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:58,015 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 715 transitions. [2024-12-02 12:53:58,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:53:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions. [2024-12-02 12:53:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:53:58,016 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:58,017 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:53:58,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:53:58,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:58,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1945599191, now seen corresponding path program 1 times [2024-12-02 12:53:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014102967] [2024-12-02 12:53:58,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:53:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014102967] [2024-12-02 12:53:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014102967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:59,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:53:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:53:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933416760] [2024-12-02 12:53:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:59,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:53:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:59,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:53:59,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:53:59,672 INFO L87 Difference]: Start difference. First operand 480 states and 715 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:00,132 INFO L93 Difference]: Finished difference Result 836 states and 1244 transitions. [2024-12-02 12:54:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:54:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-12-02 12:54:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:00,135 INFO L225 Difference]: With dead ends: 836 [2024-12-02 12:54:00,135 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 12:54:00,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:54:00,136 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 173 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:00,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 449 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:54:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 12:54:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 480. [2024-12-02 12:54:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.3759791122715406) internal successors, (527), 385 states have internal predecessors, (527), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-12-02 12:54:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 709 transitions. [2024-12-02 12:54:00,200 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 709 transitions. Word has length 179 [2024-12-02 12:54:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:00,201 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 709 transitions. [2024-12-02 12:54:00,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 709 transitions. [2024-12-02 12:54:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 12:54:00,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:00,203 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:00,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:54:00,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:00,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash 505905582, now seen corresponding path program 1 times [2024-12-02 12:54:00,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:00,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262989183] [2024-12-02 12:54:00,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:00,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:00,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262989183] [2024-12-02 12:54:00,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262989183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:00,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:00,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529671691] [2024-12-02 12:54:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:00,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:00,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:00,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:00,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:00,317 INFO L87 Difference]: Start difference. First operand 480 states and 709 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:00,387 INFO L93 Difference]: Finished difference Result 794 states and 1183 transitions. [2024-12-02 12:54:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-12-02 12:54:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:00,390 INFO L225 Difference]: With dead ends: 794 [2024-12-02 12:54:00,390 INFO L226 Difference]: Without dead ends: 492 [2024-12-02 12:54:00,391 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 12:54:00,391 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 10 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:00,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 272 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-12-02 12:54:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 480. [2024-12-02 12:54:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.3550913838120104) internal successors, (519), 385 states have internal predecessors, (519), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-12-02 12:54:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 701 transitions. [2024-12-02 12:54:00,448 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 701 transitions. Word has length 180 [2024-12-02 12:54:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:00,448 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 701 transitions. [2024-12-02 12:54:00,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 701 transitions. [2024-12-02 12:54:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 12:54:00,450 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:00,450 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:00,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:54:00,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:00,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash -195158996, now seen corresponding path program 1 times [2024-12-02 12:54:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075618155] [2024-12-02 12:54:00,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075618155] [2024-12-02 12:54:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075618155] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:54:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402992489] [2024-12-02 12:54:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:03,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:54:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:03,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:54:03,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:54:03,005 INFO L87 Difference]: Start difference. First operand 480 states and 701 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:04,229 INFO L93 Difference]: Finished difference Result 944 states and 1373 transitions. [2024-12-02 12:54:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:54:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-12-02 12:54:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:04,233 INFO L225 Difference]: With dead ends: 944 [2024-12-02 12:54:04,233 INFO L226 Difference]: Without dead ends: 688 [2024-12-02 12:54:04,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:54:04,234 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 312 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:04,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 588 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:54:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-12-02 12:54:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 410. [2024-12-02 12:54:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 323 states have (on average 1.346749226006192) internal successors, (435), 323 states have internal predecessors, (435), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:54:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 597 transitions. [2024-12-02 12:54:04,292 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 597 transitions. Word has length 180 [2024-12-02 12:54:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:04,293 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 597 transitions. [2024-12-02 12:54:04,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 597 transitions. [2024-12-02 12:54:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 12:54:04,294 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:04,294 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:04,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:54:04,294 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:04,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -350192478, now seen corresponding path program 1 times [2024-12-02 12:54:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974647756] [2024-12-02 12:54:04,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974647756] [2024-12-02 12:54:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974647756] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:09,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:09,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:54:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521620777] [2024-12-02 12:54:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:09,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:54:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:09,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:54:09,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:54:09,066 INFO L87 Difference]: Start difference. First operand 410 states and 597 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:11,263 INFO L93 Difference]: Finished difference Result 858 states and 1227 transitions. [2024-12-02 12:54:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:54:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-12-02 12:54:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:11,266 INFO L225 Difference]: With dead ends: 858 [2024-12-02 12:54:11,266 INFO L226 Difference]: Without dead ends: 600 [2024-12-02 12:54:11,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:54:11,267 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 344 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:11,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 944 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 12:54:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-12-02 12:54:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 447. [2024-12-02 12:54:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 360 states have (on average 1.3527777777777779) internal successors, (487), 360 states have internal predecessors, (487), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:54:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 649 transitions. [2024-12-02 12:54:11,318 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 649 transitions. Word has length 180 [2024-12-02 12:54:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:11,319 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 649 transitions. [2024-12-02 12:54:11,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 649 transitions. [2024-12-02 12:54:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 12:54:11,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:11,321 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:11,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:54:11,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:11,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1665273245, now seen corresponding path program 1 times [2024-12-02 12:54:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211100710] [2024-12-02 12:54:11,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:14,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211100710] [2024-12-02 12:54:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211100710] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:14,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:54:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024599170] [2024-12-02 12:54:14,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:14,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:54:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:14,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:54:14,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:54:14,544 INFO L87 Difference]: Start difference. First operand 447 states and 649 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:18,427 INFO L93 Difference]: Finished difference Result 1151 states and 1681 transitions. [2024-12-02 12:54:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 12:54:18,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 12:54:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:18,430 INFO L225 Difference]: With dead ends: 1151 [2024-12-02 12:54:18,430 INFO L226 Difference]: Without dead ends: 945 [2024-12-02 12:54:18,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2024-12-02 12:54:18,431 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 646 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:18,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 804 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 12:54:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-12-02 12:54:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 671. [2024-12-02 12:54:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 526 states have (on average 1.3574144486692015) internal successors, (714), 526 states have internal predecessors, (714), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:54:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 984 transitions. [2024-12-02 12:54:18,483 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 984 transitions. Word has length 181 [2024-12-02 12:54:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:18,484 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 984 transitions. [2024-12-02 12:54:18,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 984 transitions. [2024-12-02 12:54:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 12:54:18,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:18,485 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:18,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:54:18,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:18,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash 309910167, now seen corresponding path program 1 times [2024-12-02 12:54:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:18,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016914969] [2024-12-02 12:54:18,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:18,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:23,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:23,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016914969] [2024-12-02 12:54:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016914969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:54:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524645929] [2024-12-02 12:54:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:23,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:54:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:23,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:54:23,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:54:23,108 INFO L87 Difference]: Start difference. First operand 671 states and 984 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:54:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:25,650 INFO L93 Difference]: Finished difference Result 1516 states and 2201 transitions. [2024-12-02 12:54:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:54:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 181 [2024-12-02 12:54:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:25,654 INFO L225 Difference]: With dead ends: 1516 [2024-12-02 12:54:25,654 INFO L226 Difference]: Without dead ends: 1017 [2024-12-02 12:54:25,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:54:25,656 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 567 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:25,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 725 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 12:54:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-12-02 12:54:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 733. [2024-12-02 12:54:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 588 states have (on average 1.3503401360544218) internal successors, (794), 588 states have internal predecessors, (794), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:54:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1064 transitions. [2024-12-02 12:54:25,713 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1064 transitions. Word has length 181 [2024-12-02 12:54:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:25,714 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1064 transitions. [2024-12-02 12:54:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:54:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1064 transitions. [2024-12-02 12:54:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 12:54:25,715 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:25,715 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:25,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:54:25,715 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:25,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2084917529, now seen corresponding path program 1 times [2024-12-02 12:54:25,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25270045] [2024-12-02 12:54:25,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25270045] [2024-12-02 12:54:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25270045] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 12:54:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532422767] [2024-12-02 12:54:33,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:33,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:54:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:33,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:54:33,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:54:33,118 INFO L87 Difference]: Start difference. First operand 733 states and 1064 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:41,240 INFO L93 Difference]: Finished difference Result 1267 states and 1843 transitions. [2024-12-02 12:54:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:54:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 12:54:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:41,243 INFO L225 Difference]: With dead ends: 1267 [2024-12-02 12:54:41,243 INFO L226 Difference]: Without dead ends: 859 [2024-12-02 12:54:41,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:54:41,245 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 532 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:41,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 975 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 12:54:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-12-02 12:54:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 749. [2024-12-02 12:54:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 604 states have (on average 1.3509933774834437) internal successors, (816), 604 states have internal predecessors, (816), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:54:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1086 transitions. [2024-12-02 12:54:41,299 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1086 transitions. Word has length 181 [2024-12-02 12:54:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:41,299 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1086 transitions. [2024-12-02 12:54:41,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1086 transitions. [2024-12-02 12:54:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 12:54:41,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:41,301 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:41,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:54:41,301 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:41,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1404859159, now seen corresponding path program 1 times [2024-12-02 12:54:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060268498] [2024-12-02 12:54:41,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:54:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060268498] [2024-12-02 12:54:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060268498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:44,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:54:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090199024] [2024-12-02 12:54:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:44,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:54:44,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:44,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:54:44,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:54:44,853 INFO L87 Difference]: Start difference. First operand 749 states and 1086 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:47,038 INFO L93 Difference]: Finished difference Result 1549 states and 2243 transitions. [2024-12-02 12:54:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 12:54:47,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-12-02 12:54:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:47,042 INFO L225 Difference]: With dead ends: 1549 [2024-12-02 12:54:47,042 INFO L226 Difference]: Without dead ends: 1141 [2024-12-02 12:54:47,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:54:47,044 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 336 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:47,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 549 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 12:54:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-12-02 12:54:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 763. [2024-12-02 12:54:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 618 states have (on average 1.3559870550161812) internal successors, (838), 618 states have internal predecessors, (838), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:54:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1108 transitions. [2024-12-02 12:54:47,116 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1108 transitions. Word has length 181 [2024-12-02 12:54:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:47,117 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1108 transitions. [2024-12-02 12:54:47,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:54:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1108 transitions. [2024-12-02 12:54:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 12:54:47,119 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:47,119 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:47,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:54:47,119 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:47,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 94978982, now seen corresponding path program 1 times [2024-12-02 12:54:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225471617] [2024-12-02 12:54:47,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:55:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225471617] [2024-12-02 12:55:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225471617] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:31,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 12:55:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226451603] [2024-12-02 12:55:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:31,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 12:55:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:31,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 12:55:31,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:55:31,898 INFO L87 Difference]: Start difference. First operand 763 states and 1108 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:55:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:34,528 INFO L93 Difference]: Finished difference Result 1166 states and 1632 transitions. [2024-12-02 12:55:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:55:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 182 [2024-12-02 12:55:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:34,532 INFO L225 Difference]: With dead ends: 1166 [2024-12-02 12:55:34,532 INFO L226 Difference]: Without dead ends: 1164 [2024-12-02 12:55:34,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2024-12-02 12:55:34,533 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 572 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:34,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 890 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 12:55:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-12-02 12:55:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 836. [2024-12-02 12:55:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 691 states have (on average 1.3531114327062228) internal successors, (935), 691 states have internal predecessors, (935), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:55:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1205 transitions. [2024-12-02 12:55:34,621 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1205 transitions. Word has length 182 [2024-12-02 12:55:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:34,621 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1205 transitions. [2024-12-02 12:55:34,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:55:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1205 transitions. [2024-12-02 12:55:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 12:55:34,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:34,623 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:34,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:55:34,624 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:34,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -722669468, now seen corresponding path program 1 times [2024-12-02 12:55:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271037473] [2024-12-02 12:55:34,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:34,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:56:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271037473] [2024-12-02 12:56:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271037473] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:56:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396697462] [2024-12-02 12:56:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:17,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:56:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:17,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:56:17,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:56:17,797 INFO L87 Difference]: Start difference. First operand 836 states and 1205 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:56:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:18,779 INFO L93 Difference]: Finished difference Result 1189 states and 1660 transitions. [2024-12-02 12:56:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:56:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 182 [2024-12-02 12:56:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:18,785 INFO L225 Difference]: With dead ends: 1189 [2024-12-02 12:56:18,785 INFO L226 Difference]: Without dead ends: 1187 [2024-12-02 12:56:18,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:56:18,786 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 275 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:18,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1430 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:56:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2024-12-02 12:56:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 905. [2024-12-02 12:56:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 760 states have (on average 1.3421052631578947) internal successors, (1020), 760 states have internal predecessors, (1020), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:56:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1290 transitions. [2024-12-02 12:56:18,860 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1290 transitions. Word has length 182 [2024-12-02 12:56:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:18,860 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1290 transitions. [2024-12-02 12:56:18,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:56:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1290 transitions. [2024-12-02 12:56:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 12:56:18,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:18,862 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:18,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:56:18,862 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:18,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 517680808, now seen corresponding path program 1 times [2024-12-02 12:56:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837723772] [2024-12-02 12:56:18,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:56:18,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:18,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837723772] [2024-12-02 12:56:18,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837723772] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:18,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:18,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:56:18,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343297503] [2024-12-02 12:56:18,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:18,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:56:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:18,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:56:18,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:56:18,975 INFO L87 Difference]: Start difference. First operand 905 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:19,152 INFO L93 Difference]: Finished difference Result 1581 states and 2266 transitions. [2024-12-02 12:56:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:56:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 12:56:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:19,156 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 12:56:19,156 INFO L226 Difference]: Without dead ends: 928 [2024-12-02 12:56:19,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:56:19,157 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 116 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:19,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 555 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:56:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2024-12-02 12:56:19,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 882. [2024-12-02 12:56:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 737 states have (on average 1.3432835820895523) internal successors, (990), 737 states have internal predecessors, (990), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:56:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1260 transitions. [2024-12-02 12:56:19,249 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1260 transitions. Word has length 182 [2024-12-02 12:56:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:19,249 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1260 transitions. [2024-12-02 12:56:19,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1260 transitions. [2024-12-02 12:56:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 12:56:19,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:19,251 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:19,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:56:19,251 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:19,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1664045197, now seen corresponding path program 1 times [2024-12-02 12:56:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212588328] [2024-12-02 12:56:19,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:56:30,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:30,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212588328] [2024-12-02 12:56:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212588328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:30,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 12:56:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183201845] [2024-12-02 12:56:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:30,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 12:56:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:30,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 12:56:30,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:56:30,409 INFO L87 Difference]: Start difference. First operand 882 states and 1260 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:32,358 INFO L93 Difference]: Finished difference Result 1560 states and 2219 transitions. [2024-12-02 12:56:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:56:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 12:56:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:32,363 INFO L225 Difference]: With dead ends: 1560 [2024-12-02 12:56:32,363 INFO L226 Difference]: Without dead ends: 1034 [2024-12-02 12:56:32,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:56:32,364 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 240 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:32,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 865 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:56:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-12-02 12:56:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 866. [2024-12-02 12:56:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 721 states have (on average 1.3273231622746187) internal successors, (957), 721 states have internal predecessors, (957), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:56:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1227 transitions. [2024-12-02 12:56:32,423 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1227 transitions. Word has length 182 [2024-12-02 12:56:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:32,424 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1227 transitions. [2024-12-02 12:56:32,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1227 transitions. [2024-12-02 12:56:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 12:56:32,425 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:32,425 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:32,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:56:32,425 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:32,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1840198095, now seen corresponding path program 1 times [2024-12-02 12:56:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:32,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435900309] [2024-12-02 12:56:32,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:56:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435900309] [2024-12-02 12:56:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435900309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 12:56:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305503579] [2024-12-02 12:56:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:35,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:56:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:35,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:56:35,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:56:35,019 INFO L87 Difference]: Start difference. First operand 866 states and 1227 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:36,455 INFO L93 Difference]: Finished difference Result 1204 states and 1721 transitions. [2024-12-02 12:56:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:56:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-12-02 12:56:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:36,459 INFO L225 Difference]: With dead ends: 1204 [2024-12-02 12:56:36,459 INFO L226 Difference]: Without dead ends: 994 [2024-12-02 12:56:36,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:56:36,459 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 262 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:36,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 743 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:56:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-12-02 12:56:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 858. [2024-12-02 12:56:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 713 states have (on average 1.3253856942496494) internal successors, (945), 713 states have internal predecessors, (945), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:56:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1215 transitions. [2024-12-02 12:56:36,542 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1215 transitions. Word has length 182 [2024-12-02 12:56:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:36,542 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1215 transitions. [2024-12-02 12:56:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:56:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1215 transitions. [2024-12-02 12:56:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 12:56:36,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:36,543 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:36,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:56:36,544 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:36,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1906520206, now seen corresponding path program 1 times [2024-12-02 12:56:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52789036] [2024-12-02 12:56:36,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:57:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52789036] [2024-12-02 12:57:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52789036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:26,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 12:57:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763397374] [2024-12-02 12:57:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:26,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:57:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:26,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:57:26,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:57:26,421 INFO L87 Difference]: Start difference. First operand 858 states and 1215 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:57:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:29,052 INFO L93 Difference]: Finished difference Result 1096 states and 1498 transitions. [2024-12-02 12:57:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 12:57:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 183 [2024-12-02 12:57:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:29,055 INFO L225 Difference]: With dead ends: 1096 [2024-12-02 12:57:29,055 INFO L226 Difference]: Without dead ends: 1094 [2024-12-02 12:57:29,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2024-12-02 12:57:29,057 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 476 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:29,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1047 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 12:57:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-12-02 12:57:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 896. [2024-12-02 12:57:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 751 states have (on average 1.322237017310253) internal successors, (993), 751 states have internal predecessors, (993), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:57:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1263 transitions. [2024-12-02 12:57:29,132 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1263 transitions. Word has length 183 [2024-12-02 12:57:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:29,132 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1263 transitions. [2024-12-02 12:57:29,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:57:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1263 transitions. [2024-12-02 12:57:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 12:57:29,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:29,134 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:29,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:57:29,134 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:29,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1483818380, now seen corresponding path program 1 times [2024-12-02 12:57:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107051777] [2024-12-02 12:57:29,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:18,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107051777] [2024-12-02 12:58:18,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107051777] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:18,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:18,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 12:58:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590288386] [2024-12-02 12:58:18,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:18,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:58:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:18,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:58:18,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:58:18,316 INFO L87 Difference]: Start difference. First operand 896 states and 1263 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:58:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:20,895 INFO L93 Difference]: Finished difference Result 1116 states and 1521 transitions. [2024-12-02 12:58:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:58:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 183 [2024-12-02 12:58:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:20,903 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 12:58:20,903 INFO L226 Difference]: Without dead ends: 1114 [2024-12-02 12:58:20,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2024-12-02 12:58:20,904 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 462 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:20,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 879 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 12:58:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-12-02 12:58:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 934. [2024-12-02 12:58:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 789 states have (on average 1.3193916349809887) internal successors, (1041), 789 states have internal predecessors, (1041), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1311 transitions. [2024-12-02 12:58:20,974 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1311 transitions. Word has length 183 [2024-12-02 12:58:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:20,975 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1311 transitions. [2024-12-02 12:58:20,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:58:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1311 transitions. [2024-12-02 12:58:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 12:58:20,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:20,977 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:20,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:58:20,977 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:20,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:20,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2142534596, now seen corresponding path program 1 times [2024-12-02 12:58:20,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797390260] [2024-12-02 12:58:20,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:24,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797390260] [2024-12-02 12:58:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797390260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:24,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:24,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 12:58:24,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984435878] [2024-12-02 12:58:24,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:24,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:58:24,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:24,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:58:24,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:58:24,415 INFO L87 Difference]: Start difference. First operand 934 states and 1311 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:26,566 INFO L93 Difference]: Finished difference Result 1678 states and 2402 transitions. [2024-12-02 12:58:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:58:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 12:58:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:26,570 INFO L225 Difference]: With dead ends: 1678 [2024-12-02 12:58:26,570 INFO L226 Difference]: Without dead ends: 1264 [2024-12-02 12:58:26,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:58:26,572 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 291 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:26,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 594 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 12:58:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2024-12-02 12:58:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 978. [2024-12-02 12:58:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 833 states have (on average 1.3289315726290516) internal successors, (1107), 833 states have internal predecessors, (1107), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1377 transitions. [2024-12-02 12:58:26,635 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1377 transitions. Word has length 183 [2024-12-02 12:58:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:26,635 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1377 transitions. [2024-12-02 12:58:26,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1377 transitions. [2024-12-02 12:58:26,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 12:58:26,636 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:26,636 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:26,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:58:26,637 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:26,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1462476226, now seen corresponding path program 1 times [2024-12-02 12:58:26,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:26,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743666594] [2024-12-02 12:58:26,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:35,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743666594] [2024-12-02 12:58:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743666594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:35,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 12:58:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057510766] [2024-12-02 12:58:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:35,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:58:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:35,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:58:35,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:58:35,169 INFO L87 Difference]: Start difference. First operand 978 states and 1377 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:38,145 INFO L93 Difference]: Finished difference Result 1610 states and 2290 transitions. [2024-12-02 12:58:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:58:38,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-12-02 12:58:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:38,150 INFO L225 Difference]: With dead ends: 1610 [2024-12-02 12:58:38,150 INFO L226 Difference]: Without dead ends: 1102 [2024-12-02 12:58:38,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:58:38,151 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 434 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:38,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 988 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 12:58:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2024-12-02 12:58:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 976. [2024-12-02 12:58:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 831 states have (on average 1.3200962695547533) internal successors, (1097), 831 states have internal predecessors, (1097), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1367 transitions. [2024-12-02 12:58:38,212 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1367 transitions. Word has length 183 [2024-12-02 12:58:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:38,212 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1367 transitions. [2024-12-02 12:58:38,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1367 transitions. [2024-12-02 12:58:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 12:58:38,213 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:38,213 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:38,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:58:38,213 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:38,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1966430054, now seen corresponding path program 1 times [2024-12-02 12:58:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300785540] [2024-12-02 12:58:38,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300785540] [2024-12-02 12:58:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300785540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:38,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:58:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476508882] [2024-12-02 12:58:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:38,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:58:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:38,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:58:38,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:58:38,536 INFO L87 Difference]: Start difference. First operand 976 states and 1367 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:38,945 INFO L93 Difference]: Finished difference Result 1524 states and 2177 transitions. [2024-12-02 12:58:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:58:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 12:58:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:38,949 INFO L225 Difference]: With dead ends: 1524 [2024-12-02 12:58:38,949 INFO L226 Difference]: Without dead ends: 1026 [2024-12-02 12:58:38,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:58:38,950 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 120 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:38,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 579 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:58:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-12-02 12:58:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 972. [2024-12-02 12:58:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 827 states have (on average 1.3119709794437726) internal successors, (1085), 827 states have internal predecessors, (1085), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1355 transitions. [2024-12-02 12:58:39,008 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1355 transitions. Word has length 184 [2024-12-02 12:58:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:39,008 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1355 transitions. [2024-12-02 12:58:39,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1355 transitions. [2024-12-02 12:58:39,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 12:58:39,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:39,010 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:39,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:58:39,010 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:39,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:39,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1000289820, now seen corresponding path program 1 times [2024-12-02 12:58:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144052302] [2024-12-02 12:58:39,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144052302] [2024-12-02 12:58:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144052302] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:39,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:58:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130487623] [2024-12-02 12:58:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:39,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:58:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:39,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:58:39,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:58:39,277 INFO L87 Difference]: Start difference. First operand 972 states and 1355 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:39,634 INFO L93 Difference]: Finished difference Result 1636 states and 2294 transitions. [2024-12-02 12:58:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:58:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-12-02 12:58:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:39,637 INFO L225 Difference]: With dead ends: 1636 [2024-12-02 12:58:39,637 INFO L226 Difference]: Without dead ends: 1025 [2024-12-02 12:58:39,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:58:39,639 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 117 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:39,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 416 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:58:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-12-02 12:58:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 971. [2024-12-02 12:58:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 826 states have (on average 1.311138014527845) internal successors, (1083), 826 states have internal predecessors, (1083), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1353 transitions. [2024-12-02 12:58:39,701 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1353 transitions. Word has length 184 [2024-12-02 12:58:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:39,701 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1353 transitions. [2024-12-02 12:58:39,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1353 transitions. [2024-12-02 12:58:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 12:58:39,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:39,702 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:39,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:58:39,703 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:39,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 523266016, now seen corresponding path program 1 times [2024-12-02 12:58:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634993466] [2024-12-02 12:58:39,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634993466] [2024-12-02 12:58:41,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634993466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:41,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:41,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:58:41,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886332643] [2024-12-02 12:58:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:41,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:58:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:41,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:58:41,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:58:41,401 INFO L87 Difference]: Start difference. First operand 971 states and 1353 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:42,567 INFO L93 Difference]: Finished difference Result 1793 states and 2488 transitions. [2024-12-02 12:58:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:58:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-12-02 12:58:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:42,571 INFO L225 Difference]: With dead ends: 1793 [2024-12-02 12:58:42,571 INFO L226 Difference]: Without dead ends: 1021 [2024-12-02 12:58:42,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:58:42,572 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 201 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:42,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 612 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:58:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2024-12-02 12:58:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 863. [2024-12-02 12:58:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 718 states have (on average 1.3105849582172702) internal successors, (941), 718 states have internal predecessors, (941), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1211 transitions. [2024-12-02 12:58:42,632 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1211 transitions. Word has length 185 [2024-12-02 12:58:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:42,633 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1211 transitions. [2024-12-02 12:58:42,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1211 transitions. [2024-12-02 12:58:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 12:58:42,634 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:42,634 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:42,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:58:42,634 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:42,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1678654235, now seen corresponding path program 1 times [2024-12-02 12:58:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278367062] [2024-12-02 12:58:42,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278367062] [2024-12-02 12:58:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278367062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:42,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:58:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442135303] [2024-12-02 12:58:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:42,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:58:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:42,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:58:42,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:58:42,836 INFO L87 Difference]: Start difference. First operand 863 states and 1211 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:43,328 INFO L93 Difference]: Finished difference Result 1435 states and 2045 transitions. [2024-12-02 12:58:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:58:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 187 [2024-12-02 12:58:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:43,332 INFO L225 Difference]: With dead ends: 1435 [2024-12-02 12:58:43,332 INFO L226 Difference]: Without dead ends: 933 [2024-12-02 12:58:43,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:58:43,333 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 126 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:43,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 634 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:58:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-12-02 12:58:43,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 851. [2024-12-02 12:58:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 706 states have (on average 1.3101983002832862) internal successors, (925), 706 states have internal predecessors, (925), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1195 transitions. [2024-12-02 12:58:43,414 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1195 transitions. Word has length 187 [2024-12-02 12:58:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:43,414 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1195 transitions. [2024-12-02 12:58:43,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1195 transitions. [2024-12-02 12:58:43,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 12:58:43,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:43,415 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:43,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:58:43,415 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:43,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1653427360, now seen corresponding path program 1 times [2024-12-02 12:58:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:43,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707524637] [2024-12-02 12:58:43,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:58:43,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707524637] [2024-12-02 12:58:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707524637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:43,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:58:43,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097782211] [2024-12-02 12:58:43,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:43,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:58:43,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:43,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:58:43,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:58:43,478 INFO L87 Difference]: Start difference. First operand 851 states and 1195 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:43,609 INFO L93 Difference]: Finished difference Result 1607 states and 2313 transitions. [2024-12-02 12:58:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:58:43,609 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 188 [2024-12-02 12:58:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:43,613 INFO L225 Difference]: With dead ends: 1607 [2024-12-02 12:58:43,613 INFO L226 Difference]: Without dead ends: 1089 [2024-12-02 12:58:43,614 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 12:58:43,614 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 36 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:43,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 266 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:58:43,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-12-02 12:58:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 993. [2024-12-02 12:58:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 848 states have (on average 1.3478773584905661) internal successors, (1143), 848 states have internal predecessors, (1143), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:58:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1413 transitions. [2024-12-02 12:58:43,675 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1413 transitions. Word has length 188 [2024-12-02 12:58:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:43,675 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1413 transitions. [2024-12-02 12:58:43,675 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, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 12:58:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1413 transitions. [2024-12-02 12:58:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 12:58:43,676 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:43,676 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:43,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 12:58:43,677 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:43,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1788045695, now seen corresponding path program 1 times [2024-12-02 12:58:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:43,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822654671] [2024-12-02 12:58:43,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:43,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 12:59:29,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822654671] [2024-12-02 12:59:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822654671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:59:29,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 12:59:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429720069] [2024-12-02 12:59:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:29,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:59:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:29,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:59:29,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:59:29,221 INFO L87 Difference]: Start difference. First operand 993 states and 1413 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:59:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:59:34,399 INFO L93 Difference]: Finished difference Result 1225 states and 1662 transitions. [2024-12-02 12:59:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 12:59:34,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 190 [2024-12-02 12:59:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:59:34,404 INFO L225 Difference]: With dead ends: 1225 [2024-12-02 12:59:34,404 INFO L226 Difference]: Without dead ends: 1223 [2024-12-02 12:59:34,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 12:59:34,405 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 515 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:59:34,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 902 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 12:59:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-12-02 12:59:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1008. [2024-12-02 12:59:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 863 states have (on average 1.3453070683661645) internal successors, (1161), 863 states have internal predecessors, (1161), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 12:59:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1431 transitions. [2024-12-02 12:59:34,479 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1431 transitions. Word has length 190 [2024-12-02 12:59:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:59:34,479 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1431 transitions. [2024-12-02 12:59:34,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:59:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1431 transitions. [2024-12-02 12:59:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 12:59:34,480 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:34,480 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:34,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 12:59:34,480 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:34,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1850085309, now seen corresponding path program 1 times [2024-12-02 12:59:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997334353] [2024-12-02 12:59:34,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:00:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997334353] [2024-12-02 13:00:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997334353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:17,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:00:17,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 13:00:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357818613] [2024-12-02 13:00:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:17,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 13:00:17,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:17,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 13:00:17,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:00:17,214 INFO L87 Difference]: Start difference. First operand 1008 states and 1431 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:00:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:22,510 INFO L93 Difference]: Finished difference Result 1271 states and 1713 transitions. [2024-12-02 13:00:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 13:00:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 190 [2024-12-02 13:00:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:22,514 INFO L225 Difference]: With dead ends: 1271 [2024-12-02 13:00:22,514 INFO L226 Difference]: Without dead ends: 1269 [2024-12-02 13:00:22,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 13:00:22,515 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 394 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:22,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 945 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 13:00:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-12-02 13:00:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1023. [2024-12-02 13:00:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 878 states have (on average 1.3428246013667426) internal successors, (1179), 878 states have internal predecessors, (1179), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:00:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1449 transitions. [2024-12-02 13:00:22,583 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1449 transitions. Word has length 190 [2024-12-02 13:00:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:22,583 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1449 transitions. [2024-12-02 13:00:22,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:00:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1449 transitions. [2024-12-02 13:00:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 13:00:22,584 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:22,584 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:00:22,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 13:00:22,584 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:22,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1420971839, now seen corresponding path program 1 times [2024-12-02 13:00:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649899728] [2024-12-02 13:00:22,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:00:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649899728] [2024-12-02 13:00:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649899728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:00:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:00:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58474167] [2024-12-02 13:00:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:00:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:23,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:00:23,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:00:23,178 INFO L87 Difference]: Start difference. First operand 1023 states and 1449 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:00:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:24,833 INFO L93 Difference]: Finished difference Result 1903 states and 2685 transitions. [2024-12-02 13:00:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:00:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 190 [2024-12-02 13:00:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:24,837 INFO L225 Difference]: With dead ends: 1903 [2024-12-02 13:00:24,837 INFO L226 Difference]: Without dead ends: 1217 [2024-12-02 13:00:24,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:00:24,838 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 166 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:24,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 962 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 13:00:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-12-02 13:00:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1047. [2024-12-02 13:00:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 902 states have (on average 1.3337028824833703) internal successors, (1203), 902 states have internal predecessors, (1203), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:00:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1473 transitions. [2024-12-02 13:00:24,907 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1473 transitions. Word has length 190 [2024-12-02 13:00:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:24,907 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1473 transitions. [2024-12-02 13:00:24,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:00:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1473 transitions. [2024-12-02 13:00:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 13:00:24,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:24,908 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:00:24,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 13:00:24,908 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:24,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash -253531223, now seen corresponding path program 1 times [2024-12-02 13:00:24,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:24,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63208762] [2024-12-02 13:00:24,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:24,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:00:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63208762] [2024-12-02 13:00:26,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63208762] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:26,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:00:26,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:00:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696885212] [2024-12-02 13:00:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:26,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:00:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:26,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:00:26,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:00:26,771 INFO L87 Difference]: Start difference. First operand 1047 states and 1473 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:00:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:27,939 INFO L93 Difference]: Finished difference Result 1851 states and 2625 transitions. [2024-12-02 13:00:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:00:27,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 191 [2024-12-02 13:00:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:27,942 INFO L225 Difference]: With dead ends: 1851 [2024-12-02 13:00:27,942 INFO L226 Difference]: Without dead ends: 1149 [2024-12-02 13:00:27,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:00:27,944 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 351 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:27,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 719 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:00:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-12-02 13:00:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1067. [2024-12-02 13:00:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 922 states have (on average 1.32646420824295) internal successors, (1223), 922 states have internal predecessors, (1223), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:00:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1493 transitions. [2024-12-02 13:00:28,015 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1493 transitions. Word has length 191 [2024-12-02 13:00:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:28,015 INFO L471 AbstractCegarLoop]: Abstraction has 1067 states and 1493 transitions. [2024-12-02 13:00:28,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:00:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1493 transitions. [2024-12-02 13:00:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 13:00:28,016 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:28,016 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:00:28,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 13:00:28,016 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1274599577, now seen corresponding path program 1 times [2024-12-02 13:00:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146949562] [2024-12-02 13:00:28,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:01:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:01:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:01:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146949562] [2024-12-02 13:01:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146949562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:01:15,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:01:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 13:01:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962402012] [2024-12-02 13:01:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:01:15,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:01:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:01:15,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:01:15,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:01:15,630 INFO L87 Difference]: Start difference. First operand 1067 states and 1493 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:01:21,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:01:21,153 INFO L93 Difference]: Finished difference Result 1261 states and 1697 transitions. [2024-12-02 13:01:21,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 13:01:21,154 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2024-12-02 13:01:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:01:21,156 INFO L225 Difference]: With dead ends: 1261 [2024-12-02 13:01:21,156 INFO L226 Difference]: Without dead ends: 1259 [2024-12-02 13:01:21,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=491, Invalid=1861, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 13:01:21,157 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 392 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:01:21,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1168 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 13:01:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2024-12-02 13:01:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1074. [2024-12-02 13:01:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 929 states have (on average 1.3229278794402584) internal successors, (1229), 929 states have internal predecessors, (1229), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:01:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1499 transitions. [2024-12-02 13:01:21,226 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1499 transitions. Word has length 191 [2024-12-02 13:01:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:01:21,226 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1499 transitions. [2024-12-02 13:01:21,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:01:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1499 transitions. [2024-12-02 13:01:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 13:01:21,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:01:21,227 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:01:21,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 13:01:21,227 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:01:21,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:01:21,227 INFO L85 PathProgramCache]: Analyzing trace with hash 648628457, now seen corresponding path program 1 times [2024-12-02 13:01:21,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:01:21,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667295838] [2024-12-02 13:01:21,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:01:21,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:01:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:02:09,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:02:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667295838] [2024-12-02 13:02:09,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667295838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:02:09,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:02:09,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 13:02:09,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235751148] [2024-12-02 13:02:09,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:02:09,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 13:02:09,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:02:09,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 13:02:09,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:02:09,050 INFO L87 Difference]: Start difference. First operand 1074 states and 1499 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:02:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:02:18,437 INFO L93 Difference]: Finished difference Result 1295 states and 1731 transitions. [2024-12-02 13:02:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 13:02:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2024-12-02 13:02:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:02:18,440 INFO L225 Difference]: With dead ends: 1295 [2024-12-02 13:02:18,440 INFO L226 Difference]: Without dead ends: 1293 [2024-12-02 13:02:18,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=462, Invalid=1890, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 13:02:18,441 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 497 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:02:18,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 997 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 13:02:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-12-02 13:02:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1081. [2024-12-02 13:02:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 936 states have (on average 1.3194444444444444) internal successors, (1235), 936 states have internal predecessors, (1235), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:02:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1505 transitions. [2024-12-02 13:02:18,512 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1505 transitions. Word has length 191 [2024-12-02 13:02:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:02:18,512 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1505 transitions. [2024-12-02 13:02:18,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:02:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1505 transitions. [2024-12-02 13:02:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-12-02 13:02:18,513 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:02:18,513 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:02:18,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 13:02:18,513 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:02:18,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:02:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash -671367594, now seen corresponding path program 1 times [2024-12-02 13:02:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:02:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352339192] [2024-12-02 13:02:18,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:02:18,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:02:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:03:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352339192] [2024-12-02 13:03:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352339192] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 13:03:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137685300] [2024-12-02 13:03:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:00,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 13:03:00,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:00,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 13:03:00,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:03:00,806 INFO L87 Difference]: Start difference. First operand 1081 states and 1505 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:03:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:04,807 INFO L93 Difference]: Finished difference Result 1216 states and 1647 transitions. [2024-12-02 13:03:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 13:03:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2024-12-02 13:03:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:04,810 INFO L225 Difference]: With dead ends: 1216 [2024-12-02 13:03:04,810 INFO L226 Difference]: Without dead ends: 1214 [2024-12-02 13:03:04,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:03:04,811 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 324 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:04,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1284 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 13:03:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-12-02 13:03:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1082. [2024-12-02 13:03:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 937 states have (on average 1.32017075773746) internal successors, (1237), 937 states have internal predecessors, (1237), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:03:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1507 transitions. [2024-12-02 13:03:04,884 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1507 transitions. Word has length 194 [2024-12-02 13:03:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:04,884 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1507 transitions. [2024-12-02 13:03:04,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:03:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1507 transitions. [2024-12-02 13:03:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-12-02 13:03:04,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:04,886 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:03:04,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 13:03:04,886 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:04,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash -609327980, now seen corresponding path program 1 times [2024-12-02 13:03:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:04,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459631702] [2024-12-02 13:03:04,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:04,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:03:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459631702] [2024-12-02 13:03:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459631702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:03:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877530206] [2024-12-02 13:03:46,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:46,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:03:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:46,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:03:46,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:03:46,366 INFO L87 Difference]: Start difference. First operand 1082 states and 1507 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:03:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:49,324 INFO L93 Difference]: Finished difference Result 1233 states and 1667 transitions. [2024-12-02 13:03:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:03:49,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2024-12-02 13:03:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:49,327 INFO L225 Difference]: With dead ends: 1233 [2024-12-02 13:03:49,327 INFO L226 Difference]: Without dead ends: 1231 [2024-12-02 13:03:49,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2024-12-02 13:03:49,327 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 307 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:49,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1044 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:03:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-12-02 13:03:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1083. [2024-12-02 13:03:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 938 states have (on average 1.3208955223880596) internal successors, (1239), 938 states have internal predecessors, (1239), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:03:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1509 transitions. [2024-12-02 13:03:49,410 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1509 transitions. Word has length 194 [2024-12-02 13:03:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:49,410 INFO L471 AbstractCegarLoop]: Abstraction has 1083 states and 1509 transitions. [2024-12-02 13:03:49,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:03:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1509 transitions. [2024-12-02 13:03:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-12-02 13:03:49,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:49,411 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:03:49,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 13:03:49,411 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:49,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1251860440, now seen corresponding path program 1 times [2024-12-02 13:03:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:49,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683128633] [2024-12-02 13:03:49,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:49,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:03:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683128633] [2024-12-02 13:03:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683128633] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:49,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:49,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:03:49,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280427168] [2024-12-02 13:03:49,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:49,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:03:49,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:49,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:03:49,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:03:49,770 INFO L87 Difference]: Start difference. First operand 1083 states and 1509 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:03:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:50,472 INFO L93 Difference]: Finished difference Result 1859 states and 2629 transitions. [2024-12-02 13:03:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:03:50,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 194 [2024-12-02 13:03:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:50,475 INFO L225 Difference]: With dead ends: 1859 [2024-12-02 13:03:50,475 INFO L226 Difference]: Without dead ends: 1116 [2024-12-02 13:03:50,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:03:50,476 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 143 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:50,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 690 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:03:50,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-12-02 13:03:50,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1026. [2024-12-02 13:03:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 881 states have (on average 1.3314415437003406) internal successors, (1173), 881 states have internal predecessors, (1173), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:03:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1443 transitions. [2024-12-02 13:03:50,548 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1443 transitions. Word has length 194 [2024-12-02 13:03:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:50,548 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1443 transitions. [2024-12-02 13:03:50,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:03:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1443 transitions. [2024-12-02 13:03:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 13:03:50,549 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:50,549 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:03:50,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 13:03:50,549 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:50,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -207000208, now seen corresponding path program 1 times [2024-12-02 13:03:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:50,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228295229] [2024-12-02 13:03:50,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:04:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:04:31,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:04:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228295229] [2024-12-02 13:04:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228295229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:04:31,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:04:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 13:04:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396857425] [2024-12-02 13:04:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:04:31,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:04:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:04:31,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:04:31,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:04:31,281 INFO L87 Difference]: Start difference. First operand 1026 states and 1443 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:04:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:04:34,246 INFO L93 Difference]: Finished difference Result 1124 states and 1545 transitions. [2024-12-02 13:04:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:04:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2024-12-02 13:04:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:04:34,249 INFO L225 Difference]: With dead ends: 1124 [2024-12-02 13:04:34,249 INFO L226 Difference]: Without dead ends: 1122 [2024-12-02 13:04:34,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:04:34,250 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 409 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:04:34,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1054 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:04:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-12-02 13:04:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1011. [2024-12-02 13:04:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 866 states have (on average 1.333718244803695) internal successors, (1155), 866 states have internal predecessors, (1155), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:04:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1425 transitions. [2024-12-02 13:04:34,322 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1425 transitions. Word has length 195 [2024-12-02 13:04:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:04:34,322 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1425 transitions. [2024-12-02 13:04:34,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:04:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1425 transitions. [2024-12-02 13:04:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 13:04:34,323 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:04:34,323 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:04:34,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 13:04:34,323 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:04:34,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:04:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1716227826, now seen corresponding path program 1 times [2024-12-02 13:04:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:04:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835729393] [2024-12-02 13:04:34,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:04:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:04:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 13:05:18,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:18,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835729393] [2024-12-02 13:05:18,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835729393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:05:18,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:05:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 13:05:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865207449] [2024-12-02 13:05:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:05:18,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:05:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:18,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:05:18,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:05:18,534 INFO L87 Difference]: Start difference. First operand 1011 states and 1425 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:05:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:22,255 INFO L93 Difference]: Finished difference Result 1120 states and 1540 transitions. [2024-12-02 13:05:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:05:22,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2024-12-02 13:05:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:22,258 INFO L225 Difference]: With dead ends: 1120 [2024-12-02 13:05:22,258 INFO L226 Difference]: Without dead ends: 1118 [2024-12-02 13:05:22,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:05:22,259 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 285 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:22,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1114 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 13:05:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-12-02 13:05:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 996. [2024-12-02 13:05:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 851 states have (on average 1.336075205640423) internal successors, (1137), 851 states have internal predecessors, (1137), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 13:05:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1407 transitions. [2024-12-02 13:05:22,327 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1407 transitions. Word has length 195 [2024-12-02 13:05:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1407 transitions. [2024-12-02 13:05:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 13:05:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1407 transitions. [2024-12-02 13:05:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-12-02 13:05:22,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:22,330 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:22,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 13:05:22,330 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:22,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1850231995, now seen corresponding path program 1 times [2024-12-02 13:05:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:22,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779898871] [2024-12-02 13:05:22,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:22,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:22,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779898871] [2024-12-02 13:05:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779898871] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711140858] [2024-12-02 13:05:22,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:22,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:22,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:05:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:22,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:05:22,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 2980 proven. 2 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-12-02 13:05:23,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711140858] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:05:23,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:05:23,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-12-02 13:05:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726591587] [2024-12-02 13:05:23,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:23,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:05:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:23,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:05:23,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:05:23,477 INFO L87 Difference]: Start difference. First operand 996 states and 1407 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 13:05:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:24,037 INFO L93 Difference]: Finished difference Result 3320 states and 4755 transitions. [2024-12-02 13:05:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:05:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 357 [2024-12-02 13:05:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:24,043 INFO L225 Difference]: With dead ends: 3320 [2024-12-02 13:05:24,043 INFO L226 Difference]: Without dead ends: 2980 [2024-12-02 13:05:24,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:05:24,045 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 901 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:24,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 813 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:05:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2024-12-02 13:05:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1602. [2024-12-02 13:05:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1405 states have (on average 1.3451957295373667) internal successors, (1890), 1409 states have internal predecessors, (1890), 179 states have call successors, (179), 17 states have call predecessors, (179), 17 states have return successors, (179), 175 states have call predecessors, (179), 179 states have call successors, (179) [2024-12-02 13:05:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2248 transitions. [2024-12-02 13:05:24,168 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2248 transitions. Word has length 357 [2024-12-02 13:05:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:24,169 INFO L471 AbstractCegarLoop]: Abstraction has 1602 states and 2248 transitions. [2024-12-02 13:05:24,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 13:05:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2248 transitions. [2024-12-02 13:05:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-12-02 13:05:24,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:24,172 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:24,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:05:24,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:24,372 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:24,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1776647417, now seen corresponding path program 1 times [2024-12-02 13:05:24,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:24,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559385957] [2024-12-02 13:05:24,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:24,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:24,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559385957] [2024-12-02 13:05:24,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559385957] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312722769] [2024-12-02 13:05:24,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:24,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:24,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:24,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:05:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:25,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:05:25,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 721 proven. 3014 refuted. 0 times theorem prover too weak. 2055 trivial. 0 not checked. [2024-12-02 13:05:25,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 161 proven. 45 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2024-12-02 13:05:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312722769] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:05:25,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:05:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 19 [2024-12-02 13:05:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457787877] [2024-12-02 13:05:25,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:25,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:05:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:25,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:05:25,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:05:25,723 INFO L87 Difference]: Start difference. First operand 1602 states and 2248 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2024-12-02 13:05:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:28,160 INFO L93 Difference]: Finished difference Result 4338 states and 6166 transitions. [2024-12-02 13:05:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 13:05:28,160 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) Word has length 357 [2024-12-02 13:05:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:28,166 INFO L225 Difference]: With dead ends: 4338 [2024-12-02 13:05:28,166 INFO L226 Difference]: Without dead ends: 3046 [2024-12-02 13:05:28,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=675, Invalid=3231, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 13:05:28,170 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 3368 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:28,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 1939 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:05:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2024-12-02 13:05:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2106. [2024-12-02 13:05:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1771 states have (on average 1.3297571993224166) internal successors, (2355), 1776 states have internal predecessors, (2355), 298 states have call successors, (298), 36 states have call predecessors, (298), 36 states have return successors, (298), 293 states have call predecessors, (298), 298 states have call successors, (298) [2024-12-02 13:05:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2951 transitions. [2024-12-02 13:05:28,480 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2951 transitions. Word has length 357 [2024-12-02 13:05:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:28,480 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 2951 transitions. [2024-12-02 13:05:28,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2024-12-02 13:05:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2951 transitions. [2024-12-02 13:05:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-12-02 13:05:28,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:28,484 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:28,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:05:28,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:28,685 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:28,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1440789085, now seen corresponding path program 1 times [2024-12-02 13:05:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:28,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820793675] [2024-12-02 13:05:28,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820793675] [2024-12-02 13:05:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820793675] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79584037] [2024-12-02 13:05:29,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:29,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:29,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:29,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:05:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:29,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:05:29,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 2956 proven. 72 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2024-12-02 13:05:29,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 148 proven. 72 refuted. 0 times theorem prover too weak. 5570 trivial. 0 not checked. [2024-12-02 13:05:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79584037] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:05:29,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:05:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-12-02 13:05:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623906700] [2024-12-02 13:05:29,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:29,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:05:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:29,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:05:29,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:05:29,775 INFO L87 Difference]: Start difference. First operand 2106 states and 2951 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2024-12-02 13:05:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:31,507 INFO L93 Difference]: Finished difference Result 4682 states and 6575 transitions. [2024-12-02 13:05:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 13:05:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 358 [2024-12-02 13:05:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:31,514 INFO L225 Difference]: With dead ends: 4682 [2024-12-02 13:05:31,514 INFO L226 Difference]: Without dead ends: 2873 [2024-12-02 13:05:31,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 719 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 13:05:31,517 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 1509 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:31,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 947 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:05:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2024-12-02 13:05:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1954. [2024-12-02 13:05:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1605 states have (on average 1.3065420560747663) internal successors, (2097), 1610 states have internal predecessors, (2097), 298 states have call successors, (298), 50 states have call predecessors, (298), 50 states have return successors, (298), 293 states have call predecessors, (298), 298 states have call successors, (298) [2024-12-02 13:05:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2693 transitions. [2024-12-02 13:05:31,801 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2693 transitions. Word has length 358 [2024-12-02 13:05:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:31,802 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2693 transitions. [2024-12-02 13:05:31,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2024-12-02 13:05:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2693 transitions. [2024-12-02 13:05:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-12-02 13:05:31,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:31,806 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:31,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:05:32,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:32,007 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:32,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -725629478, now seen corresponding path program 1 times [2024-12-02 13:05:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118790485] [2024-12-02 13:05:32,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:32,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:34,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118790485] [2024-12-02 13:05:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118790485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621967757] [2024-12-02 13:05:34,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:34,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:34,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:34,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:05:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:34,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 13:05:34,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 229 proven. 3048 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2024-12-02 13:05:37,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621967757] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:38,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:05:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2024-12-02 13:05:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416538796] [2024-12-02 13:05:38,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:38,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 13:05:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:38,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 13:05:38,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:05:38,185 INFO L87 Difference]: Start difference. First operand 1954 states and 2693 transitions. Second operand has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2024-12-02 13:05:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:40,877 INFO L93 Difference]: Finished difference Result 4214 states and 5828 transitions. [2024-12-02 13:05:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 13:05:40,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) Word has length 358 [2024-12-02 13:05:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:40,883 INFO L225 Difference]: With dead ends: 4214 [2024-12-02 13:05:40,883 INFO L226 Difference]: Without dead ends: 2591 [2024-12-02 13:05:40,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=451, Invalid=2519, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 13:05:40,886 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 873 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 3120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:40,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1896 Invalid, 3120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 13:05:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-12-02 13:05:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2336. [2024-12-02 13:05:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1911 states have (on average 1.2967032967032968) internal successors, (2478), 1917 states have internal predecessors, (2478), 363 states have call successors, (363), 61 states have call predecessors, (363), 61 states have return successors, (363), 357 states have call predecessors, (363), 363 states have call successors, (363) [2024-12-02 13:05:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3204 transitions. [2024-12-02 13:05:41,123 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3204 transitions. Word has length 358 [2024-12-02 13:05:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:41,124 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 3204 transitions. [2024-12-02 13:05:41,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2024-12-02 13:05:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3204 transitions. [2024-12-02 13:05:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-12-02 13:05:41,128 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:41,129 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:41,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:05:41,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:41,329 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:41,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash 285487772, now seen corresponding path program 1 times [2024-12-02 13:05:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:41,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508197286] [2024-12-02 13:05:41,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508197286] [2024-12-02 13:05:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508197286] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488496901] [2024-12-02 13:05:43,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:43,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:43,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:43,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:43,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:05:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:43,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 13:05:43,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 6 proven. 2977 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-12-02 13:05:44,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:46,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488496901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:46,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:05:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 20 [2024-12-02 13:05:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134705190] [2024-12-02 13:05:46,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:46,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:05:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:46,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:05:46,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-12-02 13:05:46,748 INFO L87 Difference]: Start difference. First operand 2336 states and 3204 transitions. Second operand has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 13:05:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:49,351 INFO L93 Difference]: Finished difference Result 5482 states and 7501 transitions. [2024-12-02 13:05:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 13:05:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 358 [2024-12-02 13:05:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:49,359 INFO L225 Difference]: With dead ends: 5482 [2024-12-02 13:05:49,359 INFO L226 Difference]: Without dead ends: 3859 [2024-12-02 13:05:49,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:05:49,363 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 835 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:49,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2174 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:05:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2024-12-02 13:05:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 2969. [2024-12-02 13:05:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2392 states have (on average 1.2876254180602007) internal successors, (3080), 2400 states have internal predecessors, (3080), 493 states have call successors, (493), 83 states have call predecessors, (493), 83 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2024-12-02 13:05:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4066 transitions. [2024-12-02 13:05:49,707 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4066 transitions. Word has length 358 [2024-12-02 13:05:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:49,707 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 4066 transitions. [2024-12-02 13:05:49,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-12-02 13:05:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4066 transitions. [2024-12-02 13:05:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-12-02 13:05:49,710 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:49,710 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:49,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:05:49,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:49,911 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:49,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 385547198, now seen corresponding path program 1 times [2024-12-02 13:05:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969169135] [2024-12-02 13:05:49,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:50,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969169135] [2024-12-02 13:05:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969169135] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922942626] [2024-12-02 13:05:50,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:50,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:50,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:50,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:05:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:50,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 13:05:50,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 2966 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-12-02 13:05:51,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:05:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:51,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922942626] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:05:51,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:05:51,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-12-02 13:05:51,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692358311] [2024-12-02 13:05:51,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:05:51,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 13:05:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:05:51,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 13:05:51,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:05:51,863 INFO L87 Difference]: Start difference. First operand 2969 states and 4066 transitions. Second operand has 18 states, 18 states have (on average 11.722222222222221) internal successors, (211), 18 states have internal predecessors, (211), 5 states have call successors, (162), 3 states have call predecessors, (162), 3 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) [2024-12-02 13:05:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:05:53,805 INFO L93 Difference]: Finished difference Result 6175 states and 8492 transitions. [2024-12-02 13:05:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 13:05:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.722222222222221) internal successors, (211), 18 states have internal predecessors, (211), 5 states have call successors, (162), 3 states have call predecessors, (162), 3 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) Word has length 359 [2024-12-02 13:05:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:05:53,813 INFO L225 Difference]: With dead ends: 6175 [2024-12-02 13:05:53,813 INFO L226 Difference]: Without dead ends: 4429 [2024-12-02 13:05:53,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 715 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 13:05:53,816 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 1189 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:05:53,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 2130 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 13:05:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2024-12-02 13:05:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 2975. [2024-12-02 13:05:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2398 states have (on average 1.286071726438699) internal successors, (3084), 2406 states have internal predecessors, (3084), 493 states have call successors, (493), 83 states have call predecessors, (493), 83 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2024-12-02 13:05:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4070 transitions. [2024-12-02 13:05:54,154 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4070 transitions. Word has length 359 [2024-12-02 13:05:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:05:54,155 INFO L471 AbstractCegarLoop]: Abstraction has 2975 states and 4070 transitions. [2024-12-02 13:05:54,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.722222222222221) internal successors, (211), 18 states have internal predecessors, (211), 5 states have call successors, (162), 3 states have call predecessors, (162), 3 states have return successors, (162), 5 states have call predecessors, (162), 5 states have call successors, (162) [2024-12-02 13:05:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4070 transitions. [2024-12-02 13:05:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-12-02 13:05:54,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:05:54,160 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:05:54,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:05:54,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 13:05:54,361 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:05:54,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:05:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 518625832, now seen corresponding path program 1 times [2024-12-02 13:05:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:05:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061445502] [2024-12-02 13:05:54,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:05:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:05:55,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:05:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061445502] [2024-12-02 13:05:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061445502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:05:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525511078] [2024-12-02 13:05:55,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:05:55,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:05:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:05:55,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:05:55,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:05:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:55,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 13:05:55,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:05:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 3 proven. 2979 refuted. 0 times theorem prover too weak. 2809 trivial. 0 not checked. [2024-12-02 13:05:56,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:06:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2024-12-02 13:06:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525511078] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:02,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:06:02,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 13] total 27 [2024-12-02 13:06:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618563850] [2024-12-02 13:06:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:06:02,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:06:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:02,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:06:02,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-12-02 13:06:02,798 INFO L87 Difference]: Start difference. First operand 2975 states and 4070 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:06:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:06:15,666 INFO L93 Difference]: Finished difference Result 5617 states and 7645 transitions. [2024-12-02 13:06:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:06:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 359 [2024-12-02 13:06:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:06:15,673 INFO L225 Difference]: With dead ends: 5617 [2024-12-02 13:06:15,673 INFO L226 Difference]: Without dead ends: 4954 [2024-12-02 13:06:15,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2024-12-02 13:06:15,675 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 257 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:06:15,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1531 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-12-02 13:06:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2024-12-02 13:06:16,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 3099. [2024-12-02 13:06:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2522 states have (on average 1.2981760507533704) internal successors, (3274), 2530 states have internal predecessors, (3274), 493 states have call successors, (493), 83 states have call predecessors, (493), 83 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2024-12-02 13:06:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4260 transitions. [2024-12-02 13:06:16,107 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4260 transitions. Word has length 359 [2024-12-02 13:06:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:06:16,107 INFO L471 AbstractCegarLoop]: Abstraction has 3099 states and 4260 transitions. [2024-12-02 13:06:16,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:06:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4260 transitions. [2024-12-02 13:06:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-12-02 13:06:16,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:06:16,111 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:06:16,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:06:16,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 13:06:16,311 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:06:16,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:06:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1798489510, now seen corresponding path program 1 times [2024-12-02 13:06:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:06:16,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290053475] [2024-12-02 13:06:16,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:16,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:06:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 13:06:28,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:06:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290053475] [2024-12-02 13:06:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290053475] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332258170] [2024-12-02 13:06:28,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:28,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:06:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:06:28,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:06:28,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bcbec8c-adb8-4837-88e6-9f9366c9ec33/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:06:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:28,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:06:28,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:06:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 3 proven. 2979 refuted. 0 times theorem prover too weak. 2809 trivial. 0 not checked. [2024-12-02 13:06:31,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:06:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2024-12-02 13:06:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332258170] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:06:51,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20, 12] total 36 [2024-12-02 13:06:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93207260] [2024-12-02 13:06:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:06:51,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:06:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:51,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:06:51,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 13:06:51,548 INFO L87 Difference]: Start difference. First operand 3099 states and 4260 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 13:06:56,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:22,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:28,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:32,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:36,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:43,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:48,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 13:07:52,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]