./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.06.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:07:31,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:07:31,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:07:31,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:07:31,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:07:31,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:07:31,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:07:31,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:07:31,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:07:31,654 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:07:31,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:07:31,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:07:31,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:07:31,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:07:31,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:07:31,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:07:31,657 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:07:31,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:07:31,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:07:31,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:07:31,658 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 [2025-02-05 16:07:31,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:07:31,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:07:31,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:07:31,875 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:07:31,876 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:07:31,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2025-02-05 16:07:33,140 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e213d6b5e/3c0868f86a3f4e8d8d56cbab38f87df8/FLAG33eb1f985 [2025-02-05 16:07:33,462 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:07:33,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2025-02-05 16:07:33,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e213d6b5e/3c0868f86a3f4e8d8d56cbab38f87df8/FLAG33eb1f985 [2025-02-05 16:07:33,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e213d6b5e/3c0868f86a3f4e8d8d56cbab38f87df8 [2025-02-05 16:07:33,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:07:33,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:07:33,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:07:33,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:07:33,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:07:33,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:07:33" (1/1) ... [2025-02-05 16:07:33,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd3874e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:33, skipping insertion in model container [2025-02-05 16:07:33,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:07:33" (1/1) ... [2025-02-05 16:07:33,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:07:33,887 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2025-02-05 16:07:33,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:07:34,012 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:07:34,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2025-02-05 16:07:34,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:07:34,094 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:07:34,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34 WrapperNode [2025-02-05 16:07:34,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:07:34,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:07:34,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:07:34,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:07:34,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,143 INFO L138 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 498 [2025-02-05 16:07:34,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:07:34,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:07:34,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:07:34,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:07:34,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,169 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]. [2025-02-05 16:07:34,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:07:34,182 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:07:34,182 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:07:34,182 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:07:34,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (1/1) ... [2025-02-05 16:07:34,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:07:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:34,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:07:34,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-02-05 16:07:34,235 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:07:34,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:07:34,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 16:07:34,235 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:07:34,235 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:07:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:07:34,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:07:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:07:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:07:34,236 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:07:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:07:34,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:07:34,298 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:07:34,300 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:07:34,758 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2025-02-05 16:07:34,758 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:07:34,771 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:07:34,771 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:07:34,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:07:34 BoogieIcfgContainer [2025-02-05 16:07:34,772 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:07:34,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:07:34,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:07:34,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:07:34,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:07:33" (1/3) ... [2025-02-05 16:07:34,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfeb532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:07:34, skipping insertion in model container [2025-02-05 16:07:34,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:07:34" (2/3) ... [2025-02-05 16:07:34,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfeb532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:07:34, skipping insertion in model container [2025-02-05 16:07:34,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:07:34" (3/3) ... [2025-02-05 16:07:34,779 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2025-02-05 16:07:34,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:07:34,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.06.cil-1.c that has 8 procedures, 254 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2025-02-05 16:07:34,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:07:34,835 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;@4e69871c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:07:34,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:07:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 223 states have (on average 1.5605381165919283) internal successors, (348), 227 states have internal predecessors, (348), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-05 16:07:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:34,845 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:34,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:34,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:34,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:34,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1117801751, now seen corresponding path program 1 times [2025-02-05 16:07:34,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:34,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763986222] [2025-02-05 16:07:34,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:34,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:34,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:34,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:34,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:35,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:35,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763986222] [2025-02-05 16:07:35,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763986222] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:35,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:35,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:07:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154288348] [2025-02-05 16:07:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:35,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:35,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:35,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:07:35,243 INFO L87 Difference]: Start difference. First operand has 254 states, 223 states have (on average 1.5605381165919283) internal successors, (348), 227 states have internal predecessors, (348), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:35,704 INFO L93 Difference]: Finished difference Result 754 states and 1178 transitions. [2025-02-05 16:07:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:07:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:35,715 INFO L225 Difference]: With dead ends: 754 [2025-02-05 16:07:35,715 INFO L226 Difference]: Without dead ends: 506 [2025-02-05 16:07:35,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:35,723 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 674 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:35,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1070 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-02-05 16:07:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 487. [2025-02-05 16:07:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 436 states have (on average 1.5298165137614679) internal successors, (667), 439 states have internal predecessors, (667), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2025-02-05 16:07:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 740 transitions. [2025-02-05 16:07:35,779 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 740 transitions. Word has length 112 [2025-02-05 16:07:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:35,780 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 740 transitions. [2025-02-05 16:07:35,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 740 transitions. [2025-02-05 16:07:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:35,783 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:35,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:35,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:07:35,783 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:35,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1614928149, now seen corresponding path program 1 times [2025-02-05 16:07:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533685110] [2025-02-05 16:07:35,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:35,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:35,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:35,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:35,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533685110] [2025-02-05 16:07:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533685110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727197688] [2025-02-05 16:07:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:35,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:35,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:35,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:35,999 INFO L87 Difference]: Start difference. First operand 487 states and 740 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:36,554 INFO L93 Difference]: Finished difference Result 1259 states and 1932 transitions. [2025-02-05 16:07:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:36,560 INFO L225 Difference]: With dead ends: 1259 [2025-02-05 16:07:36,560 INFO L226 Difference]: Without dead ends: 786 [2025-02-05 16:07:36,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:36,563 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 667 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:36,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 2011 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 16:07:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2025-02-05 16:07:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 711. [2025-02-05 16:07:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 638 states have (on average 1.5219435736677116) internal successors, (971), 642 states have internal predecessors, (971), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (54), 51 states have call predecessors, (54), 50 states have call successors, (54) [2025-02-05 16:07:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1077 transitions. [2025-02-05 16:07:36,599 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1077 transitions. Word has length 112 [2025-02-05 16:07:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:36,600 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1077 transitions. [2025-02-05 16:07:36,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:36,600 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1077 transitions. [2025-02-05 16:07:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:36,601 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:36,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:36,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:07:36,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:36,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2004346538, now seen corresponding path program 1 times [2025-02-05 16:07:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352233517] [2025-02-05 16:07:36,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:36,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:36,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:36,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:36,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352233517] [2025-02-05 16:07:36,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352233517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:36,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:36,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:36,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298553685] [2025-02-05 16:07:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:36,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:36,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:36,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:36,756 INFO L87 Difference]: Start difference. First operand 711 states and 1077 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:37,215 INFO L93 Difference]: Finished difference Result 1965 states and 3010 transitions. [2025-02-05 16:07:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:37,221 INFO L225 Difference]: With dead ends: 1965 [2025-02-05 16:07:37,221 INFO L226 Difference]: Without dead ends: 1268 [2025-02-05 16:07:37,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:37,224 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 662 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:37,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1995 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2025-02-05 16:07:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1184. [2025-02-05 16:07:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1065 states have (on average 1.5230046948356808) internal successors, (1622), 1073 states have internal predecessors, (1622), 82 states have call successors, (82), 31 states have call predecessors, (82), 36 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2025-02-05 16:07:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1800 transitions. [2025-02-05 16:07:37,273 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1800 transitions. Word has length 112 [2025-02-05 16:07:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:37,273 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1800 transitions. [2025-02-05 16:07:37,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1800 transitions. [2025-02-05 16:07:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:37,275 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:37,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:37,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:07:37,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:37,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1481133301, now seen corresponding path program 1 times [2025-02-05 16:07:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672009144] [2025-02-05 16:07:37,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:37,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:37,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:37,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:37,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672009144] [2025-02-05 16:07:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672009144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:37,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166412789] [2025-02-05 16:07:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:37,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:37,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:37,467 INFO L87 Difference]: Start difference. First operand 1184 states and 1800 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:37,948 INFO L93 Difference]: Finished difference Result 3472 states and 5359 transitions. [2025-02-05 16:07:37,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:37,959 INFO L225 Difference]: With dead ends: 3472 [2025-02-05 16:07:37,959 INFO L226 Difference]: Without dead ends: 2302 [2025-02-05 16:07:37,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:37,962 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 657 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:37,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1983 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2025-02-05 16:07:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2199. [2025-02-05 16:07:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1982 states have (on average 1.5348133198789102) internal successors, (3042), 2004 states have internal predecessors, (3042), 142 states have call successors, (142), 55 states have call predecessors, (142), 74 states have return successors, (204), 147 states have call predecessors, (204), 140 states have call successors, (204) [2025-02-05 16:07:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3388 transitions. [2025-02-05 16:07:38,073 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3388 transitions. Word has length 112 [2025-02-05 16:07:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:38,074 INFO L471 AbstractCegarLoop]: Abstraction has 2199 states and 3388 transitions. [2025-02-05 16:07:38,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3388 transitions. [2025-02-05 16:07:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:38,076 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:38,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:38,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:07:38,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:38,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1039378806, now seen corresponding path program 1 times [2025-02-05 16:07:38,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:38,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550343096] [2025-02-05 16:07:38,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:38,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:38,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:38,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:38,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:38,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550343096] [2025-02-05 16:07:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550343096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300778206] [2025-02-05 16:07:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:38,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:38,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:38,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:38,230 INFO L87 Difference]: Start difference. First operand 2199 states and 3388 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:38,832 INFO L93 Difference]: Finished difference Result 6743 states and 10613 transitions. [2025-02-05 16:07:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:38,851 INFO L225 Difference]: With dead ends: 6743 [2025-02-05 16:07:38,851 INFO L226 Difference]: Without dead ends: 4558 [2025-02-05 16:07:38,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:38,857 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 652 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:38,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1971 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2025-02-05 16:07:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4418. [2025-02-05 16:07:39,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4418 states, 3987 states have (on average 1.5555555555555556) internal successors, (6202), 4055 states have internal predecessors, (6202), 262 states have call successors, (262), 103 states have call predecessors, (262), 168 states have return successors, (516), 275 states have call predecessors, (516), 260 states have call successors, (516) [2025-02-05 16:07:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6980 transitions. [2025-02-05 16:07:39,055 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 6980 transitions. Word has length 112 [2025-02-05 16:07:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:39,055 INFO L471 AbstractCegarLoop]: Abstraction has 4418 states and 6980 transitions. [2025-02-05 16:07:39,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 6980 transitions. [2025-02-05 16:07:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:39,058 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:39,058 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:39,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:07:39,059 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:39,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1025128661, now seen corresponding path program 1 times [2025-02-05 16:07:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524517458] [2025-02-05 16:07:39,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:39,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:39,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:39,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:39,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524517458] [2025-02-05 16:07:39,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524517458] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:39,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:39,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006531800] [2025-02-05 16:07:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:39,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:39,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:39,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:39,169 INFO L87 Difference]: Start difference. First operand 4418 states and 6980 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:39,830 INFO L93 Difference]: Finished difference Result 13982 states and 22767 transitions. [2025-02-05 16:07:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:39,875 INFO L225 Difference]: With dead ends: 13982 [2025-02-05 16:07:39,876 INFO L226 Difference]: Without dead ends: 9578 [2025-02-05 16:07:39,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:39,890 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 674 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:39,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1354 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2025-02-05 16:07:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9369. [2025-02-05 16:07:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9369 states, 8456 states have (on average 1.5820719016083256) internal successors, (13378), 8670 states have internal predecessors, (13378), 502 states have call successors, (502), 199 states have call predecessors, (502), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2025-02-05 16:07:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9369 states to 9369 states and 15404 transitions. [2025-02-05 16:07:40,329 INFO L78 Accepts]: Start accepts. Automaton has 9369 states and 15404 transitions. Word has length 112 [2025-02-05 16:07:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:40,329 INFO L471 AbstractCegarLoop]: Abstraction has 9369 states and 15404 transitions. [2025-02-05 16:07:40,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9369 states and 15404 transitions. [2025-02-05 16:07:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:40,336 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:40,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:40,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 16:07:40,336 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:40,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash 54837654, now seen corresponding path program 1 times [2025-02-05 16:07:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:40,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998649311] [2025-02-05 16:07:40,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:40,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:40,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:40,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:40,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998649311] [2025-02-05 16:07:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998649311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808679028] [2025-02-05 16:07:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:40,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:40,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:40,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:40,444 INFO L87 Difference]: Start difference. First operand 9369 states and 15404 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:41,452 INFO L93 Difference]: Finished difference Result 31563 states and 53794 transitions. [2025-02-05 16:07:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:41,571 INFO L225 Difference]: With dead ends: 31563 [2025-02-05 16:07:41,572 INFO L226 Difference]: Without dead ends: 22208 [2025-02-05 16:07:41,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:41,611 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 833 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:41,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1920 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 16:07:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22208 states. [2025-02-05 16:07:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22208 to 20309. [2025-02-05 16:07:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20309 states, 18302 states have (on average 1.6081302589880888) internal successors, (29432), 18970 states have internal predecessors, (29432), 950 states have call successors, (950), 391 states have call predecessors, (950), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2025-02-05 16:07:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20309 states to 20309 states and 35426 transitions. [2025-02-05 16:07:42,717 INFO L78 Accepts]: Start accepts. Automaton has 20309 states and 35426 transitions. Word has length 112 [2025-02-05 16:07:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:42,718 INFO L471 AbstractCegarLoop]: Abstraction has 20309 states and 35426 transitions. [2025-02-05 16:07:42,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 20309 states and 35426 transitions. [2025-02-05 16:07:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:42,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:42,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:42,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 16:07:42,730 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:42,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash -330529129, now seen corresponding path program 1 times [2025-02-05 16:07:42,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:42,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276807905] [2025-02-05 16:07:42,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:42,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:42,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:42,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:42,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:42,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276807905] [2025-02-05 16:07:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276807905] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:42,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:42,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:07:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862487131] [2025-02-05 16:07:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:42,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:42,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:42,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:07:42,837 INFO L87 Difference]: Start difference. First operand 20309 states and 35426 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:43,700 INFO L93 Difference]: Finished difference Result 45721 states and 83098 transitions. [2025-02-05 16:07:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:07:43,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:43,810 INFO L225 Difference]: With dead ends: 45721 [2025-02-05 16:07:43,812 INFO L226 Difference]: Without dead ends: 25426 [2025-02-05 16:07:43,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:43,869 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 478 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:43,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 709 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:07:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25426 states. [2025-02-05 16:07:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25426 to 20309. [2025-02-05 16:07:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20309 states, 18302 states have (on average 1.6045787345645284) internal successors, (29367), 18970 states have internal predecessors, (29367), 950 states have call successors, (950), 391 states have call predecessors, (950), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2025-02-05 16:07:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20309 states to 20309 states and 35361 transitions. [2025-02-05 16:07:45,164 INFO L78 Accepts]: Start accepts. Automaton has 20309 states and 35361 transitions. Word has length 112 [2025-02-05 16:07:45,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:45,164 INFO L471 AbstractCegarLoop]: Abstraction has 20309 states and 35361 transitions. [2025-02-05 16:07:45,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 20309 states and 35361 transitions. [2025-02-05 16:07:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:45,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:45,181 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:45,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 16:07:45,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:45,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1319607670, now seen corresponding path program 1 times [2025-02-05 16:07:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71855931] [2025-02-05 16:07:45,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:45,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:45,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:45,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:45,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71855931] [2025-02-05 16:07:45,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71855931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:45,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:45,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107964440] [2025-02-05 16:07:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:45,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:45,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:45,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:45,316 INFO L87 Difference]: Start difference. First operand 20309 states and 35361 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:46,977 INFO L93 Difference]: Finished difference Result 67543 states and 124383 transitions. [2025-02-05 16:07:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:07:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:47,196 INFO L225 Difference]: With dead ends: 67543 [2025-02-05 16:07:47,196 INFO L226 Difference]: Without dead ends: 47248 [2025-02-05 16:07:47,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:47,256 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 760 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:47,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1889 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:07:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47248 states. [2025-02-05 16:07:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47248 to 44523. [2025-02-05 16:07:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44523 states, 39874 states have (on average 1.6230375683402718) internal successors, (64717), 41936 states have internal predecessors, (64717), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2025-02-05 16:07:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44523 states to 44523 states and 84727 transitions. [2025-02-05 16:07:49,910 INFO L78 Accepts]: Start accepts. Automaton has 44523 states and 84727 transitions. Word has length 112 [2025-02-05 16:07:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:49,912 INFO L471 AbstractCegarLoop]: Abstraction has 44523 states and 84727 transitions. [2025-02-05 16:07:49,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 44523 states and 84727 transitions. [2025-02-05 16:07:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:49,929 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:49,929 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:49,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 16:07:49,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:49,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1121014089, now seen corresponding path program 1 times [2025-02-05 16:07:49,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738179483] [2025-02-05 16:07:49,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:49,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:49,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:49,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:49,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738179483] [2025-02-05 16:07:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738179483] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:50,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:50,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:07:50,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25943574] [2025-02-05 16:07:50,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:50,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:50,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:50,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:50,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:07:50,010 INFO L87 Difference]: Start difference. First operand 44523 states and 84727 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:52,198 INFO L93 Difference]: Finished difference Result 99977 states and 201398 transitions. [2025-02-05 16:07:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:07:52,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:07:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:52,540 INFO L225 Difference]: With dead ends: 99977 [2025-02-05 16:07:52,540 INFO L226 Difference]: Without dead ends: 55468 [2025-02-05 16:07:52,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:52,705 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 474 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:52,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 695 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:07:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55468 states. [2025-02-05 16:07:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55468 to 44523. [2025-02-05 16:07:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44523 states, 39874 states have (on average 1.6198023774890906) internal successors, (64588), 41936 states have internal predecessors, (64588), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2025-02-05 16:07:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44523 states to 44523 states and 84598 transitions. [2025-02-05 16:07:57,284 INFO L78 Accepts]: Start accepts. Automaton has 44523 states and 84598 transitions. Word has length 112 [2025-02-05 16:07:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:57,285 INFO L471 AbstractCegarLoop]: Abstraction has 44523 states and 84598 transitions. [2025-02-05 16:07:57,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:07:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44523 states and 84598 transitions. [2025-02-05 16:07:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 16:07:57,301 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:57,301 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:57,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 16:07:57,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:57,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 47182166, now seen corresponding path program 1 times [2025-02-05 16:07:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950546389] [2025-02-05 16:07:57,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:57,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:57,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 16:07:57,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 16:07:57,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:57,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950546389] [2025-02-05 16:07:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950546389] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:07:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:07:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068508220] [2025-02-05 16:07:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:57,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:07:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:57,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:07:57,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:57,397 INFO L87 Difference]: Start difference. First operand 44523 states and 84598 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 16:08:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:08:01,729 INFO L93 Difference]: Finished difference Result 145001 states and 301832 transitions. [2025-02-05 16:08:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 16:08:01,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2025-02-05 16:08:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:08:02,233 INFO L225 Difference]: With dead ends: 145001 [2025-02-05 16:08:02,233 INFO L226 Difference]: Without dead ends: 100492 [2025-02-05 16:08:02,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:08:02,382 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 687 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:08:02,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1858 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:08:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100492 states.