./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/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 19cc8c12b97d00c18bd753d2c40678eb07734cfb5a01e7b7c6c980ae83e69a6f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:04:10,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:04:10,196 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 23:04:10,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:04:10,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:04:10,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:04:10,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:04:10,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:04:10,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:04:10,221 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:04:10,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:04:10,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:04:10,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:04:10,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:04:10,223 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:04:10,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:04:10,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:04:10,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:04:10,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:04:10,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:04:10,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:04:10,225 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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/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 -> 19cc8c12b97d00c18bd753d2c40678eb07734cfb5a01e7b7c6c980ae83e69a6f [2024-12-01 23:04:10,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:04:10,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:04:10,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:04:10,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:04:10,470 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:04:10,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2024-12-01 23:04:13,128 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/data/d76296e17/42510af41b6f402293f1c2d13c542abd/FLAGfea92e276 [2024-12-01 23:04:13,348 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:04:13,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2024-12-01 23:04:13,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/data/d76296e17/42510af41b6f402293f1c2d13c542abd/FLAGfea92e276 [2024-12-01 23:04:13,710 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/data/d76296e17/42510af41b6f402293f1c2d13c542abd [2024-12-01 23:04:13,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:04:13,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:04:13,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:04:13,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:04:13,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:04:13,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:04:13" (1/1) ... [2024-12-01 23:04:13,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d201287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:13, skipping insertion in model container [2024-12-01 23:04:13,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:04:13" (1/1) ... [2024-12-01 23:04:13,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:04:13,860 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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i[919,932] [2024-12-01 23:04:13,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:04:13,957 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:04:13,967 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_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i[919,932] [2024-12-01 23:04:14,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:04:14,024 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:04:14,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14 WrapperNode [2024-12-01 23:04:14,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:04:14,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:04:14,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:04:14,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:04:14,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,089 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 231 [2024-12-01 23:04:14,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:04:14,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:04:14,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:04:14,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:04:14,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,130 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]. [2024-12-01 23:04:14,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,143 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:04:14,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:04:14,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:04:14,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:04:14,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (1/1) ... [2024-12-01 23:04:14,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:04:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:04:14,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:04:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:04:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:04:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 23:04:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 23:04:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:04:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:04:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:04:14,313 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:04:14,315 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:04:14,702 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-01 23:04:14,702 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:04:14,713 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:04:14,713 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 23:04:14,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:04:14 BoogieIcfgContainer [2024-12-01 23:04:14,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:04:14,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:04:14,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:04:14,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:04:14,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:04:13" (1/3) ... [2024-12-01 23:04:14,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76559ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:04:14, skipping insertion in model container [2024-12-01 23:04:14,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:04:14" (2/3) ... [2024-12-01 23:04:14,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76559ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:04:14, skipping insertion in model container [2024-12-01 23:04:14,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:04:14" (3/3) ... [2024-12-01 23:04:14,723 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i [2024-12-01 23:04:14,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:04:14,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-28.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 23:04:14,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:04:14,818 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;@3f9a0966, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:04:14,818 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:04:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-01 23:04:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:04:14,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:04:14,835 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:04:14,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:04:14,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:04:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2046951551, now seen corresponding path program 1 times [2024-12-01 23:04:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:04:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340069193] [2024-12-01 23:04:14,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:04:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:04:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:04:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-01 23:04:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:04:15,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340069193] [2024-12-01 23:04:15,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340069193] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:04:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265339179] [2024-12-01 23:04:15,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:04:15,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:04:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:04:15,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:04:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:04:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:04:15,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 23:04:15,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:04:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-01 23:04:15,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:04:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265339179] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:04:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:04:15,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-01 23:04:15,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715200099] [2024-12-01 23:04:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:04:15,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 23:04:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:04:15,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 23:04:15,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:04:15,368 INFO L87 Difference]: Start difference. First operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:04:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:04:15,392 INFO L93 Difference]: Finished difference Result 191 states and 328 transitions. [2024-12-01 23:04:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 23:04:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-12-01 23:04:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:04:15,399 INFO L225 Difference]: With dead ends: 191 [2024-12-01 23:04:15,399 INFO L226 Difference]: Without dead ends: 95 [2024-12-01 23:04:15,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:04:15,406 INFO L435 NwaCegarLoop]: 147 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, 147 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 [2024-12-01 23:04:15,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:04:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-01 23:04:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-01 23:04:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-01 23:04:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 147 transitions. [2024-12-01 23:04:15,451 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 147 transitions. Word has length 176 [2024-12-01 23:04:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:04:15,451 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 147 transitions. [2024-12-01 23:04:15,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:04:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 147 transitions. [2024-12-01 23:04:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:04:15,455 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:04:15,455 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:04:15,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-01 23:04:15,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37d6237-1b95-4512-b1f4-3d8dc8e4dc6a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:04:15,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:04:15,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:04:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -597272007, now seen corresponding path program 1 times [2024-12-01 23:04:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:04:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102402890] [2024-12-01 23:04:15,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:04:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:04:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:04:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:04:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:04:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102402890] [2024-12-01 23:04:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102402890] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:04:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:04:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:04:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086361921] [2024-12-01 23:04:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:04:15,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:04:15,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:04:15,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:04:15,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:04:15,996 INFO L87 Difference]: Start difference. First operand 95 states and 147 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:04:16,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:04:16,028 INFO L93 Difference]: Finished difference Result 188 states and 293 transitions. [2024-12-01 23:04:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:04:16,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:04:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:04:16,032 INFO L225 Difference]: With dead ends: 188 [2024-12-01 23:04:16,032 INFO L226 Difference]: Without dead ends: 96 [2024-12-01 23:04:16,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:04:16,033 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:04:16,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:04:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-01 23:04:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-12-01 23:04:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-01 23:04:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2024-12-01 23:04:16,046 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 148 transitions. Word has length 176 [2024-12-01 23:04:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:04:16,047 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 148 transitions. [2024-12-01 23:04:16,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:04:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions. [2024-12-01 23:04:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:04:16,050 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:04:16,050 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:04:16,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:04:16,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:04:16,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:04:16,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1703550583, now seen corresponding path program 1 times [2024-12-01 23:04:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:04:16,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793631938] [2024-12-01 23:04:16,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:04:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:04:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:04:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:04:17,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:04:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793631938] [2024-12-01 23:04:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793631938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:04:17,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:04:17,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:04:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844994379] [2024-12-01 23:04:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:04:17,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:04:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:04:17,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:04:17,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:04:17,324 INFO L87 Difference]: Start difference. First operand 96 states and 148 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:04:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:04:18,088 INFO L93 Difference]: Finished difference Result 438 states and 662 transitions. [2024-12-01 23:04:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:04:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:04:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:04:18,092 INFO L225 Difference]: With dead ends: 438 [2024-12-01 23:04:18,092 INFO L226 Difference]: Without dead ends: 345 [2024-12-01 23:04:18,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:04:18,094 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 632 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:04:18,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 719 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:04:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-12-01 23:04:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 288. [2024-12-01 23:04:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 220 states have (on average 1.4227272727272726) internal successors, (313), 223 states have internal predecessors, (313), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2024-12-01 23:04:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 437 transitions. [2024-12-01 23:04:18,146 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 437 transitions. Word has length 176 [2024-12-01 23:04:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:04:18,147 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 437 transitions. [2024-12-01 23:04:18,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:04:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 437 transitions. [2024-12-01 23:04:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:04:18,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:04:18,150 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:04:18,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:04:18,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:04:18,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:04:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash 423686905, now seen corresponding path program 1 times [2024-12-01 23:04:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:04:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620261911] [2024-12-01 23:04:18,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:04:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:04:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:06:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:06:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:06:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620261911] [2024-12-01 23:06:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620261911] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:06:42,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:06:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-01 23:06:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955311484] [2024-12-01 23:06:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:06:42,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-01 23:06:42,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:06:42,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-01 23:06:42,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:06:42,666 INFO L87 Difference]: Start difference. First operand 288 states and 437 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:06:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:06:45,293 INFO L93 Difference]: Finished difference Result 701 states and 1059 transitions. [2024-12-01 23:06:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 23:06:45,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:06:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:06:45,299 INFO L225 Difference]: With dead ends: 701 [2024-12-01 23:06:45,299 INFO L226 Difference]: Without dead ends: 416 [2024-12-01 23:06:45,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-12-01 23:06:45,301 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 493 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:06:45,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 655 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-01 23:06:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-12-01 23:06:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 308. [2024-12-01 23:06:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 240 states have (on average 1.4333333333333333) internal successors, (344), 243 states have internal predecessors, (344), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2024-12-01 23:06:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 468 transitions. [2024-12-01 23:06:45,333 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 468 transitions. Word has length 176 [2024-12-01 23:06:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:06:45,334 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 468 transitions. [2024-12-01 23:06:45,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:06:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 468 transitions. [2024-12-01 23:06:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:06:45,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:45,337 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:06:45,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:06:45,337 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:45,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 682482229, now seen corresponding path program 1 times [2024-12-01 23:06:45,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:45,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625951362] [2024-12-01 23:06:45,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:06:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:08:41,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:41,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625951362] [2024-12-01 23:08:41,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625951362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:41,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:41,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-01 23:08:41,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614036128] [2024-12-01 23:08:41,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:41,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:08:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:41,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:08:41,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:08:41,583 INFO L87 Difference]: Start difference. First operand 308 states and 468 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:08:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:45,860 INFO L93 Difference]: Finished difference Result 1029 states and 1545 transitions. [2024-12-01 23:08:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:08:45,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:08:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:45,865 INFO L225 Difference]: With dead ends: 1029 [2024-12-01 23:08:45,865 INFO L226 Difference]: Without dead ends: 724 [2024-12-01 23:08:45,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2024-12-01 23:08:45,867 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 615 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:45,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 724 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 23:08:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-12-01 23:08:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 458. [2024-12-01 23:08:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 360 states have (on average 1.4444444444444444) internal successors, (520), 364 states have internal predecessors, (520), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-01 23:08:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 700 transitions. [2024-12-01 23:08:45,910 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 700 transitions. Word has length 176 [2024-12-01 23:08:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:45,911 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 700 transitions. [2024-12-01 23:08:45,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:08:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 700 transitions. [2024-12-01 23:08:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:08:45,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:45,914 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:45,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:08:45,914 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:45,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1383546807, now seen corresponding path program 1 times [2024-12-01 23:08:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:45,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114775721] [2024-12-01 23:08:45,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:08:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114775721] [2024-12-01 23:08:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114775721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:46,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:46,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:08:46,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853453917] [2024-12-01 23:08:46,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:46,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:08:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:46,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:08:46,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:08:46,029 INFO L87 Difference]: Start difference. First operand 458 states and 700 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:08:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:46,351 INFO L93 Difference]: Finished difference Result 1347 states and 2063 transitions. [2024-12-01 23:08:46,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:08:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:08:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:46,357 INFO L225 Difference]: With dead ends: 1347 [2024-12-01 23:08:46,357 INFO L226 Difference]: Without dead ends: 892 [2024-12-01 23:08:46,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:08:46,359 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 501 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:46,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 545 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:08:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2024-12-01 23:08:46,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 513. [2024-12-01 23:08:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 415 states have (on average 1.4313253012048193) internal successors, (594), 419 states have internal predecessors, (594), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-01 23:08:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 774 transitions. [2024-12-01 23:08:46,412 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 774 transitions. Word has length 176 [2024-12-01 23:08:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:46,412 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 774 transitions. [2024-12-01 23:08:46,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:08:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 774 transitions. [2024-12-01 23:08:46,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:08:46,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:46,415 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:46,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:08:46,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:08:46,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -597381449, now seen corresponding path program 1 times [2024-12-01 23:08:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892181278] [2024-12-01 23:08:46,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:10:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892181278] [2024-12-01 23:10:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892181278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-01 23:10:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980678042] [2024-12-01 23:10:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:43,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-01 23:10:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:43,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-01 23:10:43,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:10:43,619 INFO L87 Difference]: Start difference. First operand 513 states and 774 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:10:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:47,471 INFO L93 Difference]: Finished difference Result 1283 states and 1915 transitions. [2024-12-01 23:10:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:10:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:10:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:47,475 INFO L225 Difference]: With dead ends: 1283 [2024-12-01 23:10:47,475 INFO L226 Difference]: Without dead ends: 773 [2024-12-01 23:10:47,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-12-01 23:10:47,477 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 460 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:47,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 849 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 23:10:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-12-01 23:10:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 536. [2024-12-01 23:10:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 438 states have (on average 1.4429223744292237) internal successors, (632), 442 states have internal predecessors, (632), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-01 23:10:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 812 transitions. [2024-12-01 23:10:47,510 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 812 transitions. Word has length 176 [2024-12-01 23:10:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:47,510 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 812 transitions. [2024-12-01 23:10:47,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:10:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 812 transitions. [2024-12-01 23:10:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:10:47,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:47,513 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:47,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 23:10:47,513 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:10:47,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:47,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1500130679, now seen corresponding path program 1 times [2024-12-01 23:10:47,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:47,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683021447] [2024-12-01 23:10:47,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:12:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:12:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:12:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683021447] [2024-12-01 23:12:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683021447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:12:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:12:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-01 23:12:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143500920] [2024-12-01 23:12:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:12:03,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-01 23:12:03,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:12:03,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-01 23:12:03,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:12:03,862 INFO L87 Difference]: Start difference. First operand 536 states and 812 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:12:06,166 INFO L93 Difference]: Finished difference Result 1291 states and 1935 transitions. [2024-12-01 23:12:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 23:12:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:12:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:12:06,169 INFO L225 Difference]: With dead ends: 1291 [2024-12-01 23:12:06,169 INFO L226 Difference]: Without dead ends: 758 [2024-12-01 23:12:06,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-12-01 23:12:06,170 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 544 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:12:06,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 656 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-01 23:12:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-12-01 23:12:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 518. [2024-12-01 23:12:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 420 states have (on average 1.4357142857142857) internal successors, (603), 424 states have internal predecessors, (603), 90 states have call successors, (90), 7 states have call predecessors, (90), 7 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-01 23:12:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 783 transitions. [2024-12-01 23:12:06,200 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 783 transitions. Word has length 176 [2024-12-01 23:12:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:12:06,200 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 783 transitions. [2024-12-01 23:12:06,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 783 transitions. [2024-12-01 23:12:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 23:12:06,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:12:06,202 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:12:06,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:12:06,202 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:12:06,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:12:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2126252409, now seen corresponding path program 1 times [2024-12-01 23:12:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:12:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354443515] [2024-12-01 23:12:06,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:12:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:12:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:12:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:12:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:12:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354443515] [2024-12-01 23:12:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354443515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:12:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:12:06,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:12:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591359989] [2024-12-01 23:12:06,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:12:06,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:12:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:12:06,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:12:06,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:12:06,316 INFO L87 Difference]: Start difference. First operand 518 states and 783 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:12:06,549 INFO L93 Difference]: Finished difference Result 1189 states and 1795 transitions. [2024-12-01 23:12:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:12:06,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-01 23:12:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:12:06,554 INFO L225 Difference]: With dead ends: 1189 [2024-12-01 23:12:06,554 INFO L226 Difference]: Without dead ends: 674 [2024-12-01 23:12:06,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:12:06,556 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 170 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:12:06,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 538 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:12:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-12-01 23:12:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 564. [2024-12-01 23:12:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.4240362811791383) internal successors, (628), 444 states have internal predecessors, (628), 114 states have call successors, (114), 8 states have call predecessors, (114), 8 states have return successors, (114), 111 states have call predecessors, (114), 114 states have call successors, (114) [2024-12-01 23:12:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 856 transitions. [2024-12-01 23:12:06,606 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 856 transitions. Word has length 176 [2024-12-01 23:12:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:12:06,606 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 856 transitions. [2024-12-01 23:12:06,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 856 transitions. [2024-12-01 23:12:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:12:06,608 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:12:06,608 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:12:06,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:12:06,608 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:12:06,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:12:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash 986038459, now seen corresponding path program 1 times [2024-12-01 23:12:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:12:06,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920335451] [2024-12-01 23:12:06,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:12:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:12:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:12:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:12:09,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:12:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920335451] [2024-12-01 23:12:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920335451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:12:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:12:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-01 23:12:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428562221] [2024-12-01 23:12:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:12:09,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-01 23:12:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:12:09,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-01 23:12:09,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 23:12:09,725 INFO L87 Difference]: Start difference. First operand 564 states and 856 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:12:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:12:12,510 INFO L93 Difference]: Finished difference Result 1426 states and 2134 transitions. [2024-12-01 23:12:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:12:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 177 [2024-12-01 23:12:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:12:12,514 INFO L225 Difference]: With dead ends: 1426 [2024-12-01 23:12:12,514 INFO L226 Difference]: Without dead ends: 865 [2024-12-01 23:12:12,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2024-12-01 23:12:12,516 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 702 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:12:12,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1263 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-01 23:12:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-12-01 23:12:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 623. [2024-12-01 23:12:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 482 states have (on average 1.4128630705394192) internal successors, (681), 486 states have internal predecessors, (681), 130 states have call successors, (130), 10 states have call predecessors, (130), 10 states have return successors, (130), 126 states have call predecessors, (130), 130 states have call successors, (130) [2024-12-01 23:12:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 941 transitions. [2024-12-01 23:12:12,555 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 941 transitions. Word has length 177 [2024-12-01 23:12:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:12:12,556 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 941 transitions. [2024-12-01 23:12:12,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:12:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 941 transitions. [2024-12-01 23:12:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:12:12,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:12:12,557 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:12:12,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:12:12,557 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:12:12,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:12:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash -35029895, now seen corresponding path program 1 times [2024-12-01 23:12:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:12:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120850809] [2024-12-01 23:12:12,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:12:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:12:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:12:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:12:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:12:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120850809] [2024-12-01 23:12:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120850809] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:12:12,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:12:12,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:12:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874714119] [2024-12-01 23:12:12,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:12:12,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:12:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:12:12,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:12:12,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:12:12,895 INFO L87 Difference]: Start difference. First operand 623 states and 941 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:12:13,725 INFO L93 Difference]: Finished difference Result 1533 states and 2298 transitions. [2024-12-01 23:12:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:12:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-12-01 23:12:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:12:13,729 INFO L225 Difference]: With dead ends: 1533 [2024-12-01 23:12:13,729 INFO L226 Difference]: Without dead ends: 913 [2024-12-01 23:12:13,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:12:13,731 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 452 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:12:13,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 784 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:12:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-12-01 23:12:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 771. [2024-12-01 23:12:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 605 states have (on average 1.4099173553719009) internal successors, (853), 611 states have internal predecessors, (853), 152 states have call successors, (152), 13 states have call predecessors, (152), 13 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-01 23:12:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1157 transitions. [2024-12-01 23:12:13,783 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1157 transitions. Word has length 177 [2024-12-01 23:12:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:12:13,783 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1157 transitions. [2024-12-01 23:12:13,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1157 transitions. [2024-12-01 23:12:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:12:13,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:12:13,785 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:12:13,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 23:12:13,785 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:12:13,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:12:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 909990344, now seen corresponding path program 1 times [2024-12-01 23:12:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:12:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887020929] [2024-12-01 23:12:13,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:12:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:12:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:12:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:12:13,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:12:13,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887020929] [2024-12-01 23:12:13,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887020929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:12:13,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:12:13,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:12:13,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861526183] [2024-12-01 23:12:13,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:12:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:12:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:12:13,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:12:13,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:12:13,855 INFO L87 Difference]: Start difference. First operand 771 states and 1157 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:12:13,935 INFO L93 Difference]: Finished difference Result 1539 states and 2311 transitions. [2024-12-01 23:12:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:12:13,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-12-01 23:12:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:12:13,939 INFO L225 Difference]: With dead ends: 1539 [2024-12-01 23:12:13,939 INFO L226 Difference]: Without dead ends: 771 [2024-12-01 23:12:13,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:12:13,940 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:12:13,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:12:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-12-01 23:12:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 769. [2024-12-01 23:12:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 603 states have (on average 1.4013266998341625) internal successors, (845), 609 states have internal predecessors, (845), 152 states have call successors, (152), 13 states have call predecessors, (152), 13 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-01 23:12:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1149 transitions. [2024-12-01 23:12:13,988 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1149 transitions. Word has length 177 [2024-12-01 23:12:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:12:13,989 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1149 transitions. [2024-12-01 23:12:13,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:12:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1149 transitions. [2024-12-01 23:12:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:12:13,990 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:12:13,990 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:12:13,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 23:12:13,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:12:13,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:12:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1084154362, now seen corresponding path program 1 times [2024-12-01 23:12:13,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:12:13,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216730650] [2024-12-01 23:12:13,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:12:13,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:12:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:14:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:14:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:14:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216730650] [2024-12-01 23:14:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216730650] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:14:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:14:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-01 23:14:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772771054] [2024-12-01 23:14:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:14:06,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:14:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:14:06,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:14:06,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:14:06,537 INFO L87 Difference]: Start difference. First operand 769 states and 1149 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:14:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:14:09,341 INFO L93 Difference]: Finished difference Result 1319 states and 1967 transitions. [2024-12-01 23:14:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 23:14:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-12-01 23:14:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:14:09,345 INFO L225 Difference]: With dead ends: 1319 [2024-12-01 23:14:09,345 INFO L226 Difference]: Without dead ends: 931 [2024-12-01 23:14:09,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-12-01 23:14:09,346 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 446 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:14:09,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 636 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-01 23:14:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-12-01 23:14:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 748. [2024-12-01 23:14:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 582 states have (on average 1.395189003436426) internal successors, (812), 588 states have internal predecessors, (812), 152 states have call successors, (152), 13 states have call predecessors, (152), 13 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-01 23:14:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1116 transitions. [2024-12-01 23:14:09,396 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1116 transitions. Word has length 177 [2024-12-01 23:14:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:14:09,396 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1116 transitions. [2024-12-01 23:14:09,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:14:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1116 transitions. [2024-12-01 23:14:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:14:09,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:14:09,398 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:14:09,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 23:14:09,398 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:14:09,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:14:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2105222716, now seen corresponding path program 1 times [2024-12-01 23:14:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:14:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175582357] [2024-12-01 23:14:09,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:14:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:14:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:16:18,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:16:18,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175582357] [2024-12-01 23:16:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175582357] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:18,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-01 23:16:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732893210] [2024-12-01 23:16:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:18,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:16:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:16:18,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:16:18,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:16:18,389 INFO L87 Difference]: Start difference. First operand 748 states and 1116 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:16:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:22,982 INFO L93 Difference]: Finished difference Result 1545 states and 2302 transitions. [2024-12-01 23:16:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:16:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-12-01 23:16:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:22,986 INFO L225 Difference]: With dead ends: 1545 [2024-12-01 23:16:22,986 INFO L226 Difference]: Without dead ends: 800 [2024-12-01 23:16:22,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-12-01 23:16:22,989 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 445 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:22,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 754 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 23:16:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-12-01 23:16:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 733. [2024-12-01 23:16:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 567 states have (on average 1.3897707231040564) internal successors, (788), 573 states have internal predecessors, (788), 152 states have call successors, (152), 13 states have call predecessors, (152), 13 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-01 23:16:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1092 transitions. [2024-12-01 23:16:23,074 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1092 transitions. Word has length 177 [2024-12-01 23:16:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:23,074 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1092 transitions. [2024-12-01 23:16:23,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:16:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1092 transitions. [2024-12-01 23:16:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:16:23,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:23,076 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:23,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 23:16:23,077 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:16:23,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash 563336633, now seen corresponding path program 1 times [2024-12-01 23:16:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:16:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605831634] [2024-12-01 23:16:23,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:16:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-01 23:18:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:18:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605831634] [2024-12-01 23:18:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605831634] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:18:03,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:18:03,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-01 23:18:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370021691] [2024-12-01 23:18:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:18:03,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:18:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:18:03,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:18:03,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:18:03,789 INFO L87 Difference]: Start difference. First operand 733 states and 1092 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:18:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:18:08,614 INFO L93 Difference]: Finished difference Result 1741 states and 2578 transitions. [2024-12-01 23:18:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 23:18:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-12-01 23:18:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:18:08,618 INFO L225 Difference]: With dead ends: 1741 [2024-12-01 23:18:08,618 INFO L226 Difference]: Without dead ends: 1011 [2024-12-01 23:18:08,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-12-01 23:18:08,619 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 610 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-01 23:18:08,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 770 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-01 23:18:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2024-12-01 23:18:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 761. [2024-12-01 23:18:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 595 states have (on average 1.3949579831932772) internal successors, (830), 601 states have internal predecessors, (830), 152 states have call successors, (152), 13 states have call predecessors, (152), 13 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-01 23:18:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1134 transitions. [2024-12-01 23:18:08,709 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1134 transitions. Word has length 177 [2024-12-01 23:18:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:18:08,709 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1134 transitions. [2024-12-01 23:18:08,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-01 23:18:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1134 transitions. [2024-12-01 23:18:08,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-01 23:18:08,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:18:08,711 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:18:08,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 23:18:08,711 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:18:08,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:18:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -457731721, now seen corresponding path program 1 times [2024-12-01 23:18:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:18:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662868422] [2024-12-01 23:18:08,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:18:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat