./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/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 9ad605ba3387c62123a16fbeee0037932d8e75059dce8ef1a0c0c471170abc9b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:54:34,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:54:34,202 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:54:34,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:54:34,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:54:34,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:54:34,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:54:34,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:54:34,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:54:34,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:54:34,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:54:34,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:54:34,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:54:34,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:54:34,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:54:34,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:54:34,236 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:54:34,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:54:34,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:54:34,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:54:34,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:54:34,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:54:34,238 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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/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 -> 9ad605ba3387c62123a16fbeee0037932d8e75059dce8ef1a0c0c471170abc9b [2024-12-02 12:54:34,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:54:34,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:54:34,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:54:34,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:54:34,475 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:54:34,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i [2024-12-02 12:54:37,113 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/data/ba2a7d933/895f02b86b3e43f394b21f006b85655f/FLAG6c68b7e0f [2024-12-02 12:54:37,387 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:54:37,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i [2024-12-02 12:54:37,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/data/ba2a7d933/895f02b86b3e43f394b21f006b85655f/FLAG6c68b7e0f [2024-12-02 12:54:37,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/data/ba2a7d933/895f02b86b3e43f394b21f006b85655f [2024-12-02 12:54:37,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:54:37,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:54:37,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:54:37,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:54:37,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:54:37,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:37" (1/1) ... [2024-12-02 12:54:37,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2a8ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:37, skipping insertion in model container [2024-12-02 12:54:37,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:37" (1/1) ... [2024-12-02 12:54:37,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:54:37,862 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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i[915,928] [2024-12-02 12:54:38,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:54:38,028 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:54:38,037 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_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-4.i[915,928] [2024-12-02 12:54:38,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:54:38,144 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:54:38,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38 WrapperNode [2024-12-02 12:54:38,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:54:38,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:54:38,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:54:38,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:54:38,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,223 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 717 [2024-12-02 12:54:38,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:54:38,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:54:38,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:54:38,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:54:38,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,266 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 12:54:38,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,284 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:54:38,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:54:38,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:54:38,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:54:38,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (1/1) ... [2024-12-02 12:54:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:54:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:54:38,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:54:38,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:54:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:54:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:54:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:54:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:54:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:54:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:54:38,524 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:54:38,526 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:54:39,559 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 12:54:39,559 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:54:39,576 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:54:39,576 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:54:39,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:39 BoogieIcfgContainer [2024-12-02 12:54:39,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:54:39,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:54:39,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:54:39,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:54:39,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:54:37" (1/3) ... [2024-12-02 12:54:39,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2696a95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:39, skipping insertion in model container [2024-12-02 12:54:39,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:38" (2/3) ... [2024-12-02 12:54:39,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2696a95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:39, skipping insertion in model container [2024-12-02 12:54:39,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:39" (3/3) ... [2024-12-02 12:54:39,586 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-4.i [2024-12-02 12:54:39,598 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:54:39,600 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-4.i that has 2 procedures, 290 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:54:39,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:54:39,663 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;@2e8dc56a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:54:39,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:54:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 206 states have (on average 1.6116504854368932) internal successors, (332), 207 states have internal predecessors, (332), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:54:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 12:54:39,690 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:39,690 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:39,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:39,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash -435900025, now seen corresponding path program 1 times [2024-12-02 12:54:39,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074753175] [2024-12-02 12:54:39,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-12-02 12:54:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074753175] [2024-12-02 12:54:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074753175] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:54:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505776896] [2024-12-02 12:54:40,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:54:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:54:40,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:54:40,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:54:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:40,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:54:40,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:54:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2024-12-02 12:54:40,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:54:40,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505776896] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:40,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:54:40,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:54:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443755366] [2024-12-02 12:54:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:40,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:54:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:40,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:54:40,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:54:40,781 INFO L87 Difference]: Start difference. First operand has 290 states, 206 states have (on average 1.6116504854368932) internal successors, (332), 207 states have internal predecessors, (332), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-12-02 12:54:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:40,840 INFO L93 Difference]: Finished difference Result 572 states and 1061 transitions. [2024-12-02 12:54:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:54:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) Word has length 548 [2024-12-02 12:54:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:40,851 INFO L225 Difference]: With dead ends: 572 [2024-12-02 12:54:40,851 INFO L226 Difference]: Without dead ends: 285 [2024-12-02 12:54:40,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 549 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 12:54:40,859 INFO L435 NwaCegarLoop]: 482 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, 482 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 12:54:40,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-12-02 12:54:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-12-02 12:54:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 202 states have (on average 1.5841584158415842) internal successors, (320), 202 states have internal predecessors, (320), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 12:54:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 482 transitions. [2024-12-02 12:54:40,931 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 482 transitions. Word has length 548 [2024-12-02 12:54:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:40,931 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 482 transitions. [2024-12-02 12:54:40,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 2 states have call successors, (81) [2024-12-02 12:54:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 482 transitions. [2024-12-02 12:54:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-12-02 12:54:40,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:40,946 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:40,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:54:41,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5d007b-07f7-4797-b8a1-3b357fe8dcf5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:54:41,147 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:41,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1900792603, now seen corresponding path program 1 times [2024-12-02 12:54:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:41,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216561277] [2024-12-02 12:54:41,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:41,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216561277] [2024-12-02 12:54:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216561277] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:41,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024303991] [2024-12-02 12:54:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:41,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:41,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:41,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:41,881 INFO L87 Difference]: Start difference. First operand 285 states and 482 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:41,968 INFO L93 Difference]: Finished difference Result 761 states and 1294 transitions. [2024-12-02 12:54:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 549 [2024-12-02 12:54:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:41,976 INFO L225 Difference]: With dead ends: 761 [2024-12-02 12:54:41,976 INFO L226 Difference]: Without dead ends: 479 [2024-12-02 12:54:41,977 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 12:54:41,978 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 332 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:41,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1264 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-12-02 12:54:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2024-12-02 12:54:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 361 states have (on average 1.6177285318559558) internal successors, (584), 362 states have internal predecessors, (584), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2024-12-02 12:54:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 808 transitions. [2024-12-02 12:54:42,033 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 808 transitions. Word has length 549 [2024-12-02 12:54:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:42,035 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 808 transitions. [2024-12-02 12:54:42,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 808 transitions. [2024-12-02 12:54:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-12-02 12:54:42,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:42,041 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:42,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:54:42,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:42,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 453592679, now seen corresponding path program 1 times [2024-12-02 12:54:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577191244] [2024-12-02 12:54:42,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577191244] [2024-12-02 12:54:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577191244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:42,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:42,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613316014] [2024-12-02 12:54:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:42,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:42,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:42,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:42,425 INFO L87 Difference]: Start difference. First operand 476 states and 808 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:42,561 INFO L93 Difference]: Finished difference Result 1322 states and 2247 transitions. [2024-12-02 12:54:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:42,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 549 [2024-12-02 12:54:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:42,570 INFO L225 Difference]: With dead ends: 1322 [2024-12-02 12:54:42,571 INFO L226 Difference]: Without dead ends: 849 [2024-12-02 12:54:42,572 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 12:54:42,573 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 307 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:42,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1032 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:54:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-12-02 12:54:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 846. [2024-12-02 12:54:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 661 states have (on average 1.6096822995461422) internal successors, (1064), 664 states have internal predecessors, (1064), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2024-12-02 12:54:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1424 transitions. [2024-12-02 12:54:42,639 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1424 transitions. Word has length 549 [2024-12-02 12:54:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:42,640 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1424 transitions. [2024-12-02 12:54:42,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1424 transitions. [2024-12-02 12:54:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-12-02 12:54:42,646 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:42,646 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:42,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:54:42,646 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:42,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -785007961, now seen corresponding path program 1 times [2024-12-02 12:54:42,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:42,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083481505] [2024-12-02 12:54:42,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:42,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083481505] [2024-12-02 12:54:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083481505] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:42,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:42,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943333317] [2024-12-02 12:54:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:42,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:42,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:42,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:42,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:42,992 INFO L87 Difference]: Start difference. First operand 846 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:43,106 INFO L93 Difference]: Finished difference Result 2504 states and 4216 transitions. [2024-12-02 12:54:43,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:43,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 549 [2024-12-02 12:54:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:43,120 INFO L225 Difference]: With dead ends: 2504 [2024-12-02 12:54:43,120 INFO L226 Difference]: Without dead ends: 1661 [2024-12-02 12:54:43,123 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 12:54:43,124 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 453 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:43,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1013 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2024-12-02 12:54:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 984. [2024-12-02 12:54:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 799 states have (on average 1.639549436795995) internal successors, (1310), 802 states have internal predecessors, (1310), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2024-12-02 12:54:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1670 transitions. [2024-12-02 12:54:43,226 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1670 transitions. Word has length 549 [2024-12-02 12:54:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:43,227 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1670 transitions. [2024-12-02 12:54:43,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1670 transitions. [2024-12-02 12:54:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-12-02 12:54:43,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:43,232 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:43,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:54:43,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:43,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1551192753, now seen corresponding path program 1 times [2024-12-02 12:54:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79827258] [2024-12-02 12:54:43,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79827258] [2024-12-02 12:54:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79827258] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264029395] [2024-12-02 12:54:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:43,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:43,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:43,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:43,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:43,452 INFO L87 Difference]: Start difference. First operand 984 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:43,524 INFO L93 Difference]: Finished difference Result 1977 states and 3346 transitions. [2024-12-02 12:54:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2024-12-02 12:54:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:43,530 INFO L225 Difference]: With dead ends: 1977 [2024-12-02 12:54:43,530 INFO L226 Difference]: Without dead ends: 996 [2024-12-02 12:54:43,532 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 12:54:43,532 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 291 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:43,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 939 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-12-02 12:54:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 670. [2024-12-02 12:54:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 547 states have (on average 1.6435100548446069) internal successors, (899), 548 states have internal predecessors, (899), 118 states have call successors, (118), 4 states have call predecessors, (118), 4 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2024-12-02 12:54:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1135 transitions. [2024-12-02 12:54:43,565 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1135 transitions. Word has length 550 [2024-12-02 12:54:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:43,566 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 1135 transitions. [2024-12-02 12:54:43,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1135 transitions. [2024-12-02 12:54:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-12-02 12:54:43,569 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:43,569 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:43,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:54:43,570 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:43,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1535674035, now seen corresponding path program 1 times [2024-12-02 12:54:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:43,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037533374] [2024-12-02 12:54:43,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:43,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:43,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037533374] [2024-12-02 12:54:43,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037533374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:43,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:43,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389906024] [2024-12-02 12:54:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:43,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:43,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:43,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:43,846 INFO L87 Difference]: Start difference. First operand 670 states and 1135 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:43,940 INFO L93 Difference]: Finished difference Result 2004 states and 3399 transitions. [2024-12-02 12:54:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:43,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2024-12-02 12:54:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:43,949 INFO L225 Difference]: With dead ends: 2004 [2024-12-02 12:54:43,949 INFO L226 Difference]: Without dead ends: 1337 [2024-12-02 12:54:43,951 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 12:54:43,952 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 469 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:43,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1021 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-12-02 12:54:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1335. [2024-12-02 12:54:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1090 states have (on average 1.6403669724770642) internal successors, (1788), 1092 states have internal predecessors, (1788), 236 states have call successors, (236), 8 states have call predecessors, (236), 8 states have return successors, (236), 234 states have call predecessors, (236), 236 states have call successors, (236) [2024-12-02 12:54:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2260 transitions. [2024-12-02 12:54:44,054 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2260 transitions. Word has length 550 [2024-12-02 12:54:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:44,055 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 2260 transitions. [2024-12-02 12:54:44,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2260 transitions. [2024-12-02 12:54:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-12-02 12:54:44,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:44,061 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:44,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:54:44,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:44,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1316819317, now seen corresponding path program 1 times [2024-12-02 12:54:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796531397] [2024-12-02 12:54:44,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796531397] [2024-12-02 12:54:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796531397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:54:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998205295] [2024-12-02 12:54:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:44,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:54:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:44,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:54:44,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:54:44,602 INFO L87 Difference]: Start difference. First operand 1335 states and 2260 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:45,214 INFO L93 Difference]: Finished difference Result 5683 states and 9564 transitions. [2024-12-02 12:54:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:54:45,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 550 [2024-12-02 12:54:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:45,240 INFO L225 Difference]: With dead ends: 5683 [2024-12-02 12:54:45,240 INFO L226 Difference]: Without dead ends: 4351 [2024-12-02 12:54:45,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:54:45,246 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 948 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:45,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1755 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:54:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2024-12-02 12:54:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 4341. [2024-12-02 12:54:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 3504 states have (on average 1.615296803652968) internal successors, (5660), 3516 states have internal predecessors, (5660), 804 states have call successors, (804), 32 states have call predecessors, (804), 32 states have return successors, (804), 792 states have call predecessors, (804), 804 states have call successors, (804) [2024-12-02 12:54:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 7268 transitions. [2024-12-02 12:54:45,607 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 7268 transitions. Word has length 550 [2024-12-02 12:54:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:45,608 INFO L471 AbstractCegarLoop]: Abstraction has 4341 states and 7268 transitions. [2024-12-02 12:54:45,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 7268 transitions. [2024-12-02 12:54:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:54:45,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:45,616 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:45,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:54:45,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:45,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 667365673, now seen corresponding path program 1 times [2024-12-02 12:54:45,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:45,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349978024] [2024-12-02 12:54:45,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:45,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:46,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:46,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349978024] [2024-12-02 12:54:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349978024] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:46,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:54:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804341394] [2024-12-02 12:54:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:46,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:54:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:46,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:54:46,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:54:46,007 INFO L87 Difference]: Start difference. First operand 4341 states and 7268 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:46,650 INFO L93 Difference]: Finished difference Result 9971 states and 16659 transitions. [2024-12-02 12:54:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:54:46,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:54:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:46,671 INFO L225 Difference]: With dead ends: 9971 [2024-12-02 12:54:46,671 INFO L226 Difference]: Without dead ends: 5633 [2024-12-02 12:54:46,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:54:46,678 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 641 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:46,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1507 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:54:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2024-12-02 12:54:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 4341. [2024-12-02 12:54:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 3504 states have (on average 1.6130136986301369) internal successors, (5652), 3516 states have internal predecessors, (5652), 804 states have call successors, (804), 32 states have call predecessors, (804), 32 states have return successors, (804), 792 states have call predecessors, (804), 804 states have call successors, (804) [2024-12-02 12:54:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 7260 transitions. [2024-12-02 12:54:46,904 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 7260 transitions. Word has length 551 [2024-12-02 12:54:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:46,905 INFO L471 AbstractCegarLoop]: Abstraction has 4341 states and 7260 transitions. [2024-12-02 12:54:46,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 7260 transitions. [2024-12-02 12:54:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:54:46,913 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:46,914 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:46,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:54:46,914 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:46,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 249969067, now seen corresponding path program 1 times [2024-12-02 12:54:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:46,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664992615] [2024-12-02 12:54:46,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:47,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664992615] [2024-12-02 12:54:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664992615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:47,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:47,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:54:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760119670] [2024-12-02 12:54:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:47,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:54:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:47,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:54:47,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:54:47,686 INFO L87 Difference]: Start difference. First operand 4341 states and 7260 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:48,835 INFO L93 Difference]: Finished difference Result 17183 states and 28743 transitions. [2024-12-02 12:54:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:54:48,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:54:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:48,901 INFO L225 Difference]: With dead ends: 17183 [2024-12-02 12:54:48,901 INFO L226 Difference]: Without dead ends: 12845 [2024-12-02 12:54:48,915 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 12:54:48,916 INFO L435 NwaCegarLoop]: 730 mSDtfsCounter, 821 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:48,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1685 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:54:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2024-12-02 12:54:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 9061. [2024-12-02 12:54:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9061 states, 7388 states have (on average 1.623714131023281) internal successors, (11996), 7412 states have internal predecessors, (11996), 1608 states have call successors, (1608), 64 states have call predecessors, (1608), 64 states have return successors, (1608), 1584 states have call predecessors, (1608), 1608 states have call successors, (1608) [2024-12-02 12:54:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9061 states to 9061 states and 15212 transitions. [2024-12-02 12:54:49,882 INFO L78 Accepts]: Start accepts. Automaton has 9061 states and 15212 transitions. Word has length 551 [2024-12-02 12:54:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:49,883 INFO L471 AbstractCegarLoop]: Abstraction has 9061 states and 15212 transitions. [2024-12-02 12:54:49,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 9061 states and 15212 transitions. [2024-12-02 12:54:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:54:49,895 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:49,895 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:49,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:54:49,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:49,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash -481998359, now seen corresponding path program 1 times [2024-12-02 12:54:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:49,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240350847] [2024-12-02 12:54:49,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240350847] [2024-12-02 12:54:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240350847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:54:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141529754] [2024-12-02 12:54:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:54:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:50,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:54:50,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:54:50,428 INFO L87 Difference]: Start difference. First operand 9061 states and 15212 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:50,810 INFO L93 Difference]: Finished difference Result 18119 states and 30421 transitions. [2024-12-02 12:54:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:54:50,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:54:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:50,841 INFO L225 Difference]: With dead ends: 18119 [2024-12-02 12:54:50,842 INFO L226 Difference]: Without dead ends: 9061 [2024-12-02 12:54:50,859 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 12:54:50,860 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 473 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:50,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 480 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:54:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9061 states. [2024-12-02 12:54:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9061 to 9061. [2024-12-02 12:54:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9061 states, 7388 states have (on average 1.6193827828911749) internal successors, (11964), 7412 states have internal predecessors, (11964), 1608 states have call successors, (1608), 64 states have call predecessors, (1608), 64 states have return successors, (1608), 1584 states have call predecessors, (1608), 1608 states have call successors, (1608) [2024-12-02 12:54:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9061 states to 9061 states and 15180 transitions. [2024-12-02 12:54:51,284 INFO L78 Accepts]: Start accepts. Automaton has 9061 states and 15180 transitions. Word has length 551 [2024-12-02 12:54:51,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:51,284 INFO L471 AbstractCegarLoop]: Abstraction has 9061 states and 15180 transitions. [2024-12-02 12:54:51,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9061 states and 15180 transitions. [2024-12-02 12:54:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:54:51,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:51,292 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:51,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:54:51,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:51,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:51,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1818824231, now seen corresponding path program 1 times [2024-12-02 12:54:51,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:51,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117932998] [2024-12-02 12:54:51,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:52,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117932998] [2024-12-02 12:54:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117932998] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:54:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354912438] [2024-12-02 12:54:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:52,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:54:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:52,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:54:52,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:54:52,397 INFO L87 Difference]: Start difference. First operand 9061 states and 15180 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:53,534 INFO L93 Difference]: Finished difference Result 23661 states and 39224 transitions. [2024-12-02 12:54:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:54:53,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:54:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:53,580 INFO L225 Difference]: With dead ends: 23661 [2024-12-02 12:54:53,581 INFO L226 Difference]: Without dead ends: 14603 [2024-12-02 12:54:53,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 12:54:53,598 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 850 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:53,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1675 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:54:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2024-12-02 12:54:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 14581. [2024-12-02 12:54:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14581 states, 11548 states have (on average 1.57499134049186) internal successors, (18188), 11604 states have internal predecessors, (18188), 2904 states have call successors, (2904), 128 states have call predecessors, (2904), 128 states have return successors, (2904), 2848 states have call predecessors, (2904), 2904 states have call successors, (2904) [2024-12-02 12:54:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14581 states to 14581 states and 23996 transitions. [2024-12-02 12:54:54,389 INFO L78 Accepts]: Start accepts. Automaton has 14581 states and 23996 transitions. Word has length 551 [2024-12-02 12:54:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:54,390 INFO L471 AbstractCegarLoop]: Abstraction has 14581 states and 23996 transitions. [2024-12-02 12:54:54,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:54:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14581 states and 23996 transitions. [2024-12-02 12:54:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:54:54,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:54,401 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:54,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:54:54,401 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:54,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:54,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2111552296, now seen corresponding path program 1 times [2024-12-02 12:54:54,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:54,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239148133] [2024-12-02 12:54:54,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:54:57,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:57,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239148133] [2024-12-02 12:54:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239148133] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:57,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:57,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 12:54:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765519104] [2024-12-02 12:54:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:57,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:54:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:57,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:54:57,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:54:57,839 INFO L87 Difference]: Start difference. First operand 14581 states and 23996 transitions. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 4 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) [2024-12-02 12:55:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:11,764 INFO L93 Difference]: Finished difference Result 67456 states and 110751 transitions. [2024-12-02 12:55:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:55:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 4 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) Word has length 551 [2024-12-02 12:55:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:11,906 INFO L225 Difference]: With dead ends: 67456 [2024-12-02 12:55:11,906 INFO L226 Difference]: Without dead ends: 52702 [2024-12-02 12:55:11,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:55:11,941 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 6951 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 1605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6951 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 5207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:11,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6951 Valid, 4511 Invalid, 5207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1605 Valid, 3602 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-12-02 12:55:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52702 states. [2024-12-02 12:55:14,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52702 to 32771. [2024-12-02 12:55:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32771 states, 26798 states have (on average 1.5931785954175686) internal successors, (42694), 26930 states have internal predecessors, (42694), 5716 states have call successors, (5716), 256 states have call predecessors, (5716), 256 states have return successors, (5716), 5584 states have call predecessors, (5716), 5716 states have call successors, (5716) [2024-12-02 12:55:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32771 states to 32771 states and 54126 transitions. [2024-12-02 12:55:14,926 INFO L78 Accepts]: Start accepts. Automaton has 32771 states and 54126 transitions. Word has length 551 [2024-12-02 12:55:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:14,927 INFO L471 AbstractCegarLoop]: Abstraction has 32771 states and 54126 transitions. [2024-12-02 12:55:14,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 4 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) [2024-12-02 12:55:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 32771 states and 54126 transitions. [2024-12-02 12:55:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:55:14,945 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:14,946 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:14,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:55:14,946 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:14,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash -724766886, now seen corresponding path program 1 times [2024-12-02 12:55:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078429792] [2024-12-02 12:55:14,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:55:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078429792] [2024-12-02 12:55:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078429792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:15,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:55:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035605643] [2024-12-02 12:55:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:15,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:55:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:15,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:55:15,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:55:15,299 INFO L87 Difference]: Start difference. First operand 32771 states and 54126 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:55:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:18,950 INFO L93 Difference]: Finished difference Result 98259 states and 162292 transitions. [2024-12-02 12:55:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:55:18,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:55:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:19,191 INFO L225 Difference]: With dead ends: 98259 [2024-12-02 12:55:19,191 INFO L226 Difference]: Without dead ends: 65491 [2024-12-02 12:55:19,233 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 12:55:19,234 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 285 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:19,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 964 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:55:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65491 states. [2024-12-02 12:55:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65491 to 65489. [2024-12-02 12:55:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65489 states, 53544 states have (on average 1.5904676527715524) internal successors, (85160), 53808 states have internal predecessors, (85160), 11432 states have call successors, (11432), 512 states have call predecessors, (11432), 512 states have return successors, (11432), 11168 states have call predecessors, (11432), 11432 states have call successors, (11432) [2024-12-02 12:55:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65489 states to 65489 states and 108024 transitions. [2024-12-02 12:55:23,605 INFO L78 Accepts]: Start accepts. Automaton has 65489 states and 108024 transitions. Word has length 551 [2024-12-02 12:55:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:23,605 INFO L471 AbstractCegarLoop]: Abstraction has 65489 states and 108024 transitions. [2024-12-02 12:55:23,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:55:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 65489 states and 108024 transitions. [2024-12-02 12:55:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:55:23,639 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:23,639 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:23,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:55:23,640 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -797153444, now seen corresponding path program 1 times [2024-12-02 12:55:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903739921] [2024-12-02 12:55:23,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:55:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903739921] [2024-12-02 12:55:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903739921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:24,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:55:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686419987] [2024-12-02 12:55:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:24,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:55:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:24,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:55:24,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:55:24,708 INFO L87 Difference]: Start difference. First operand 65489 states and 108024 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:55:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:33,476 INFO L93 Difference]: Finished difference Result 196717 states and 324578 transitions. [2024-12-02 12:55:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:55:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:55:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:33,750 INFO L225 Difference]: With dead ends: 196717 [2024-12-02 12:55:33,750 INFO L226 Difference]: Without dead ends: 131231 [2024-12-02 12:55:33,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:33,852 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 306 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:33,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1259 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:55:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131231 states. [2024-12-02 12:55:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131231 to 131229. [2024-12-02 12:55:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131229 states, 107340 states have (on average 1.5866964784795976) internal successors, (170316), 107868 states have internal predecessors, (170316), 22864 states have call successors, (22864), 1024 states have call predecessors, (22864), 1024 states have return successors, (22864), 22336 states have call predecessors, (22864), 22864 states have call successors, (22864) [2024-12-02 12:55:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131229 states to 131229 states and 216044 transitions. [2024-12-02 12:55:43,287 INFO L78 Accepts]: Start accepts. Automaton has 131229 states and 216044 transitions. Word has length 551 [2024-12-02 12:55:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:43,287 INFO L471 AbstractCegarLoop]: Abstraction has 131229 states and 216044 transitions. [2024-12-02 12:55:43,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:55:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 131229 states and 216044 transitions. [2024-12-02 12:55:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:55:43,345 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:43,345 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:43,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:55:43,346 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:43,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1469227742, now seen corresponding path program 1 times [2024-12-02 12:55:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:43,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213333400] [2024-12-02 12:55:43,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:55:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:45,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213333400] [2024-12-02 12:55:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213333400] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:45,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:55:45,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525492049] [2024-12-02 12:55:45,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:55:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:45,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:55:45,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:55:45,730 INFO L87 Difference]: Start difference. First operand 131229 states and 216044 transitions. Second operand has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2024-12-02 12:56:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:07,336 INFO L93 Difference]: Finished difference Result 352869 states and 577924 transitions. [2024-12-02 12:56:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:56:07,337 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 551 [2024-12-02 12:56:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:07,838 INFO L225 Difference]: With dead ends: 352869 [2024-12-02 12:56:07,838 INFO L226 Difference]: Without dead ends: 221643 [2024-12-02 12:56:08,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:56:08,049 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 5543 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 1264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1264 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:08,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5543 Valid, 3370 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1264 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 12:56:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221643 states. [2024-12-02 12:56:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221643 to 174061. [2024-12-02 12:56:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174061 states, 144044 states have (on average 1.5912082419260782) internal successors, (229204), 144772 states have internal predecessors, (229204), 28736 states have call successors, (28736), 1280 states have call predecessors, (28736), 1280 states have return successors, (28736), 28008 states have call predecessors, (28736), 28736 states have call successors, (28736) [2024-12-02 12:56:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174061 states to 174061 states and 286676 transitions. [2024-12-02 12:56:23,089 INFO L78 Accepts]: Start accepts. Automaton has 174061 states and 286676 transitions. Word has length 551 [2024-12-02 12:56:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:23,089 INFO L471 AbstractCegarLoop]: Abstraction has 174061 states and 286676 transitions. [2024-12-02 12:56:23,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2024-12-02 12:56:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 174061 states and 286676 transitions. [2024-12-02 12:56:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:56:23,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:23,210 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:56:23,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:56:23,210 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:23,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 439868444, now seen corresponding path program 1 times [2024-12-02 12:56:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435239102] [2024-12-02 12:56:23,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:56:24,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435239102] [2024-12-02 12:56:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435239102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:24,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:56:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959467776] [2024-12-02 12:56:24,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:24,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:56:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:24,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:56:24,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:56:24,608 INFO L87 Difference]: Start difference. First operand 174061 states and 286676 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:56:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:48,916 INFO L93 Difference]: Finished difference Result 466769 states and 763250 transitions. [2024-12-02 12:56:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:56:48,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:56:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:49,613 INFO L225 Difference]: With dead ends: 466769 [2024-12-02 12:56:49,614 INFO L226 Difference]: Without dead ends: 292551 [2024-12-02 12:56:49,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:56:49,865 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1360 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:49,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 2622 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:56:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292551 states. [2024-12-02 12:57:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292551 to 181085. [2024-12-02 12:57:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181085 states, 153180 states have (on average 1.603708055881969) internal successors, (245656), 153844 states have internal predecessors, (245656), 26752 states have call successors, (26752), 1152 states have call predecessors, (26752), 1152 states have return successors, (26752), 26088 states have call predecessors, (26752), 26752 states have call successors, (26752) [2024-12-02 12:57:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181085 states to 181085 states and 299160 transitions. [2024-12-02 12:57:04,893 INFO L78 Accepts]: Start accepts. Automaton has 181085 states and 299160 transitions. Word has length 551 [2024-12-02 12:57:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:04,893 INFO L471 AbstractCegarLoop]: Abstraction has 181085 states and 299160 transitions. [2024-12-02 12:57:04,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:57:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 181085 states and 299160 transitions. [2024-12-02 12:57:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:57:04,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:04,976 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:04,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:57:04,977 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:04,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash 588557976, now seen corresponding path program 1 times [2024-12-02 12:57:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:04,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92673182] [2024-12-02 12:57:04,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:57:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92673182] [2024-12-02 12:57:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92673182] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:07,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:07,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:57:07,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254632672] [2024-12-02 12:57:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:07,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:57:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:07,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:57:07,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:57:07,566 INFO L87 Difference]: Start difference. First operand 181085 states and 299160 transitions. Second operand has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2024-12-02 12:57:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:32,647 INFO L93 Difference]: Finished difference Result 393875 states and 649455 transitions. [2024-12-02 12:57:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:57:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 551 [2024-12-02 12:57:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:33,299 INFO L225 Difference]: With dead ends: 393875 [2024-12-02 12:57:33,299 INFO L226 Difference]: Without dead ends: 212793 [2024-12-02 12:57:33,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:57:33,483 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 5454 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 1233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5454 SdHoareTripleChecker+Valid, 5693 SdHoareTripleChecker+Invalid, 5218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:33,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5454 Valid, 5693 Invalid, 5218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1233 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-12-02 12:57:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212793 states. [2024-12-02 12:57:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212793 to 178141. [2024-12-02 12:57:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178141 states, 150932 states have (on average 1.606524792621843) internal successors, (242476), 151572 states have internal predecessors, (242476), 26072 states have call successors, (26072), 1136 states have call predecessors, (26072), 1136 states have return successors, (26072), 25432 states have call predecessors, (26072), 26072 states have call successors, (26072) [2024-12-02 12:57:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178141 states to 178141 states and 294620 transitions. [2024-12-02 12:57:46,670 INFO L78 Accepts]: Start accepts. Automaton has 178141 states and 294620 transitions. Word has length 551 [2024-12-02 12:57:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:46,670 INFO L471 AbstractCegarLoop]: Abstraction has 178141 states and 294620 transitions. [2024-12-02 12:57:46,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 3 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2024-12-02 12:57:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 178141 states and 294620 transitions. [2024-12-02 12:57:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:57:46,755 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:46,756 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:46,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:57:46,756 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:46,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 722453481, now seen corresponding path program 1 times [2024-12-02 12:57:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934140812] [2024-12-02 12:57:46,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:57:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934140812] [2024-12-02 12:57:48,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934140812] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:48,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:57:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194497821] [2024-12-02 12:57:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:48,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:57:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:48,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:57:48,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:57:48,105 INFO L87 Difference]: Start difference. First operand 178141 states and 294620 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:58:24,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:24,104 INFO L93 Difference]: Finished difference Result 662851 states and 1092111 transitions. [2024-12-02 12:58:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:58:24,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 551 [2024-12-02 12:58:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:25,382 INFO L225 Difference]: With dead ends: 662851 [2024-12-02 12:58:25,382 INFO L226 Difference]: Without dead ends: 484713 [2024-12-02 12:58:25,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:58:25,663 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 778 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:25,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1814 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:58:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484713 states. [2024-12-02 12:59:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484713 to 484661. [2024-12-02 12:59:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484661 states, 404092 states have (on average 1.58867782584164) internal successors, (641972), 406060 states have internal predecessors, (641972), 77160 states have call successors, (77160), 3408 states have call predecessors, (77160), 3408 states have return successors, (77160), 75192 states have call predecessors, (77160), 77160 states have call successors, (77160) [2024-12-02 12:59:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484661 states to 484661 states and 796292 transitions. [2024-12-02 12:59:07,414 INFO L78 Accepts]: Start accepts. Automaton has 484661 states and 796292 transitions. Word has length 551 [2024-12-02 12:59:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:59:07,414 INFO L471 AbstractCegarLoop]: Abstraction has 484661 states and 796292 transitions. [2024-12-02 12:59:07,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2024-12-02 12:59:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 484661 states and 796292 transitions. [2024-12-02 12:59:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 12:59:07,940 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:07,940 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:07,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:59:07,941 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:07,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1122913685, now seen corresponding path program 1 times [2024-12-02 12:59:07,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:07,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674592972] [2024-12-02 12:59:07,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:07,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 12:59:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674592972] [2024-12-02 12:59:16,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674592972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:16,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:59:16,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-12-02 12:59:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998932715] [2024-12-02 12:59:16,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:16,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:59:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:16,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:59:16,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:59:16,875 INFO L87 Difference]: Start difference. First operand 484661 states and 796292 transitions. Second operand has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 2 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2024-12-02 13:02:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:02:36,252 INFO L93 Difference]: Finished difference Result 1785333 states and 2893386 transitions. [2024-12-02 13:02:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 13:02:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 2 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 551 [2024-12-02 13:02:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:02:40,214 INFO L225 Difference]: With dead ends: 1785333 [2024-12-02 13:02:40,214 INFO L226 Difference]: Without dead ends: 1542907 [2024-12-02 13:02:40,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=469, Invalid=1601, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 13:02:40,886 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 10218 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 5511 mSolverCounterSat, 3222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10218 SdHoareTripleChecker+Valid, 5095 SdHoareTripleChecker+Invalid, 8733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3222 IncrementalHoareTripleChecker+Valid, 5511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:02:40,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10218 Valid, 5095 Invalid, 8733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3222 Valid, 5511 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2024-12-02 13:02:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542907 states. [2024-12-02 13:03:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542907 to 550392. [2024-12-02 13:03:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550392 states, 463241 states have (on average 1.5889288728761055) internal successors, (736057), 465402 states have internal predecessors, (736057), 82325 states have call successors, (82325), 4825 states have call predecessors, (82325), 4825 states have return successors, (82325), 80164 states have call predecessors, (82325), 82325 states have call successors, (82325) [2024-12-02 13:03:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550392 states to 550392 states and 900707 transitions. [2024-12-02 13:03:53,977 INFO L78 Accepts]: Start accepts. Automaton has 550392 states and 900707 transitions. Word has length 551 [2024-12-02 13:03:53,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:53,977 INFO L471 AbstractCegarLoop]: Abstraction has 550392 states and 900707 transitions. [2024-12-02 13:03:53,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.96) internal successors, (149), 25 states have internal predecessors, (149), 2 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2024-12-02 13:03:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 550392 states and 900707 transitions. [2024-12-02 13:03:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-12-02 13:03:54,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:54,262 INFO L218 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:54,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:03:54,263 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:54,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2143982039, now seen corresponding path program 1 times [2024-12-02 13:03:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172152175] [2024-12-02 13:03:54,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:04:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2024-12-02 13:04:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:04:04,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172152175] [2024-12-02 13:04:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172152175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:04:04,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:04:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 13:04:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683116564] [2024-12-02 13:04:04,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:04:04,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 13:04:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:04:04,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 13:04:04,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:04:04,754 INFO L87 Difference]: Start difference. First operand 550392 states and 900707 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 4 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81)