./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 64bit --witnessprinter.graph.data.programhash d13852d5bc3a3892eb1c4eb80ad6cdb0363b1511a657b3cf838b40b5fe2186ee --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 09:05:56,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 09:05:56,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 09:05:56,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 09:05:56,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 09:05:56,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 09:05:56,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 09:05:56,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 09:05:56,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 09:05:56,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 09:05:56,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 09:05:56,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 09:05:56,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 09:05:56,896 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 09:05:56,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:05:56,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 09:05:56,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 09:05:56,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 09:05:56,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 09:05:56,898 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/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13852d5bc3a3892eb1c4eb80ad6cdb0363b1511a657b3cf838b40b5fe2186ee [2025-03-08 09:05:57,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 09:05:57,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 09:05:57,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 09:05:57,112 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 09:05:57,112 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 09:05:57,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c [2025-03-08 09:05:58,211 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0073420ca/9e488846df344b4ea2afc3a7ad8a81f3/FLAG70c6e310e [2025-03-08 09:05:58,620 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 09:05:58,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c [2025-03-08 09:05:58,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0073420ca/9e488846df344b4ea2afc3a7ad8a81f3/FLAG70c6e310e [2025-03-08 09:05:58,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0073420ca/9e488846df344b4ea2afc3a7ad8a81f3 [2025-03-08 09:05:58,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 09:05:58,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 09:05:58,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 09:05:58,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 09:05:58,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 09:05:58,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:05:58" (1/1) ... [2025-03-08 09:05:58,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72645251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:58, skipping insertion in model container [2025-03-08 09:05:58,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:05:58" (1/1) ... [2025-03-08 09:05:58,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 09:05:59,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c[1174,1187] [2025-03-08 09:05:59,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:05:59,407 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 09:05:59,415 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c[1174,1187] [2025-03-08 09:05:59,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:05:59,649 INFO L204 MainTranslator]: Completed translation [2025-03-08 09:05:59,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59 WrapperNode [2025-03-08 09:05:59,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 09:05:59,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 09:05:59,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 09:05:59,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 09:05:59,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:05:59,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:00,784 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18223 [2025-03-08 09:06:00,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 09:06:00,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 09:06:00,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 09:06:00,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 09:06:00,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:00,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,397 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]. [2025-03-08 09:06:01,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:01,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:02,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 09:06:02,239 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 09:06:02,239 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 09:06:02,239 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 09:06:02,239 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (1/1) ... [2025-03-08 09:06:02,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:06:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 09:06:02,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 09:06:02,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 09:06:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 09:06:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 09:06:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 09:06:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 09:06:02,907 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 09:06:02,909 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 09:06:36,613 INFO L? ?]: Removed 9827 outVars from TransFormulas that were not future-live. [2025-03-08 09:06:36,613 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 09:06:36,969 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 09:06:36,969 INFO L336 CfgBuilder]: Removed 11 assume(true) statements. [2025-03-08 09:06:36,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:06:36 BoogieIcfgContainer [2025-03-08 09:06:36,970 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 09:06:36,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 09:06:36,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 09:06:36,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 09:06:36,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:05:58" (1/3) ... [2025-03-08 09:06:36,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445c0d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:06:36, skipping insertion in model container [2025-03-08 09:06:36,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:05:59" (2/3) ... [2025-03-08 09:06:36,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445c0d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:06:36, skipping insertion in model container [2025-03-08 09:06:36,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:06:36" (3/3) ... [2025-03-08 09:06:36,977 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.2.prop2-func-interl.c [2025-03-08 09:06:36,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 09:06:36,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.needham.2.prop2-func-interl.c that has 1 procedures, 6631 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 09:06:37,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 09:06:37,104 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;@613cfbac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 09:06:37,104 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 09:06:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 6631 states, 6629 states have (on average 1.5036958817317845) internal successors, (9968), 6630 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-08 09:06:37,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:37,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:37,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:37,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:37,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1933389449, now seen corresponding path program 1 times [2025-03-08 09:06:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229056855] [2025-03-08 09:06:37,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:37,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:37,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 09:06:37,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 09:06:37,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:06:37,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:06:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:06:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:06:38,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229056855] [2025-03-08 09:06:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229056855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:06:38,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:06:38,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:06:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933138831] [2025-03-08 09:06:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:06:38,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:06:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:06:38,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:06:38,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:38,235 INFO L87 Difference]: Start difference. First operand has 6631 states, 6629 states have (on average 1.5036958817317845) internal successors, (9968), 6630 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:06:40,787 INFO L93 Difference]: Finished difference Result 13055 states and 19629 transitions. [2025-03-08 09:06:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:06:40,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2025-03-08 09:06:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:06:40,816 INFO L225 Difference]: With dead ends: 13055 [2025-03-08 09:06:40,817 INFO L226 Difference]: Without dead ends: 6630 [2025-03-08 09:06:40,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:40,833 INFO L435 NwaCegarLoop]: 8314 mSDtfsCounter, 0 mSDsluCounter, 16623 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24937 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 09:06:40,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24937 Invalid, 4954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 09:06:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2025-03-08 09:06:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6630. [2025-03-08 09:06:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6630 states, 6629 states have (on average 1.5033941771006185) internal successors, (9966), 6629 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6630 states to 6630 states and 9966 transitions. [2025-03-08 09:06:40,992 INFO L78 Accepts]: Start accepts. Automaton has 6630 states and 9966 transitions. Word has length 273 [2025-03-08 09:06:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:06:40,996 INFO L471 AbstractCegarLoop]: Abstraction has 6630 states and 9966 transitions. [2025-03-08 09:06:40,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6630 states and 9966 transitions. [2025-03-08 09:06:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-03-08 09:06:40,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:40,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:40,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 09:06:40,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:40,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash 199159037, now seen corresponding path program 1 times [2025-03-08 09:06:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048292901] [2025-03-08 09:06:41,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:41,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:41,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-03-08 09:06:41,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-03-08 09:06:41,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:06:41,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:06:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:06:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:06:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048292901] [2025-03-08 09:06:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048292901] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:06:41,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:06:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:06:41,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595371555] [2025-03-08 09:06:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:06:41,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:06:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:06:41,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:06:41,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:41,409 INFO L87 Difference]: Start difference. First operand 6630 states and 9966 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:06:43,649 INFO L93 Difference]: Finished difference Result 13056 states and 19627 transitions. [2025-03-08 09:06:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:06:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2025-03-08 09:06:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:06:43,667 INFO L225 Difference]: With dead ends: 13056 [2025-03-08 09:06:43,667 INFO L226 Difference]: Without dead ends: 6632 [2025-03-08 09:06:43,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:43,674 INFO L435 NwaCegarLoop]: 8314 mSDtfsCounter, 0 mSDsluCounter, 16620 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24934 SdHoareTripleChecker+Invalid, 4957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:06:43,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24934 Invalid, 4957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4957 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 09:06:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2025-03-08 09:06:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 6632. [2025-03-08 09:06:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6631 states have (on average 1.5032423465540643) internal successors, (9968), 6631 states have internal predecessors, (9968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 9968 transitions. [2025-03-08 09:06:43,770 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 9968 transitions. Word has length 274 [2025-03-08 09:06:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:06:43,771 INFO L471 AbstractCegarLoop]: Abstraction has 6632 states and 9968 transitions. [2025-03-08 09:06:43,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 9968 transitions. [2025-03-08 09:06:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-08 09:06:43,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:43,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:43,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 09:06:43,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:43,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash -484484558, now seen corresponding path program 1 times [2025-03-08 09:06:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:43,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020007005] [2025-03-08 09:06:43,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:43,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:43,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-08 09:06:43,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-08 09:06:43,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:06:43,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:06:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:06:44,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:06:44,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020007005] [2025-03-08 09:06:44,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020007005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:06:44,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:06:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:06:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209547930] [2025-03-08 09:06:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:06:44,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:06:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:06:44,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:06:44,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:44,215 INFO L87 Difference]: Start difference. First operand 6632 states and 9968 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:06:46,128 INFO L93 Difference]: Finished difference Result 13060 states and 19631 transitions. [2025-03-08 09:06:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:06:46,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2025-03-08 09:06:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:06:46,145 INFO L225 Difference]: With dead ends: 13060 [2025-03-08 09:06:46,145 INFO L226 Difference]: Without dead ends: 6634 [2025-03-08 09:06:46,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:06:46,155 INFO L435 NwaCegarLoop]: 8314 mSDtfsCounter, 0 mSDsluCounter, 16615 mSDsCounter, 0 mSdLazyCounter, 4962 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24929 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-08 09:06:46,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24929 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4962 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-08 09:06:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2025-03-08 09:06:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6634. [2025-03-08 09:06:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6634 states, 6633 states have (on average 1.5030906075682195) internal successors, (9970), 6633 states have internal predecessors, (9970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6634 states to 6634 states and 9970 transitions. [2025-03-08 09:06:46,258 INFO L78 Accepts]: Start accepts. Automaton has 6634 states and 9970 transitions. Word has length 275 [2025-03-08 09:06:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:06:46,258 INFO L471 AbstractCegarLoop]: Abstraction has 6634 states and 9970 transitions. [2025-03-08 09:06:46,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6634 states and 9970 transitions. [2025-03-08 09:06:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-08 09:06:46,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:46,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:46,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 09:06:46,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:46,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash -245746238, now seen corresponding path program 1 times [2025-03-08 09:06:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:46,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82711610] [2025-03-08 09:06:46,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:46,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-08 09:06:46,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-08 09:06:46,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:06:46,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:06:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:06:46,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:06:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82711610] [2025-03-08 09:06:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82711610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:06:46,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:06:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 09:06:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008250749] [2025-03-08 09:06:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:06:46,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 09:06:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:06:46,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 09:06:46,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 09:06:46,715 INFO L87 Difference]: Start difference. First operand 6634 states and 9970 transitions. Second operand has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:06:53,055 INFO L93 Difference]: Finished difference Result 19476 states and 29274 transitions. [2025-03-08 09:06:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 09:06:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2025-03-08 09:06:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:06:53,082 INFO L225 Difference]: With dead ends: 19476 [2025-03-08 09:06:53,082 INFO L226 Difference]: Without dead ends: 13048 [2025-03-08 09:06:53,091 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 [2025-03-08 09:06:53,092 INFO L435 NwaCegarLoop]: 6663 mSDtfsCounter, 9680 mSDsluCounter, 19835 mSDsCounter, 0 mSdLazyCounter, 13051 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9680 SdHoareTripleChecker+Valid, 26498 SdHoareTripleChecker+Invalid, 13052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:06:53,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9680 Valid, 26498 Invalid, 13052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 13051 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2025-03-08 09:06:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13048 states. [2025-03-08 09:06:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13048 to 6957. [2025-03-08 09:06:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6957 states, 6956 states have (on average 1.5027314548591144) internal successors, (10453), 6956 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10453 transitions. [2025-03-08 09:06:53,221 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10453 transitions. Word has length 276 [2025-03-08 09:06:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:06:53,223 INFO L471 AbstractCegarLoop]: Abstraction has 6957 states and 10453 transitions. [2025-03-08 09:06:53,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.2) internal successors, (276), 5 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10453 transitions. [2025-03-08 09:06:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-03-08 09:06:53,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:53,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:53,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 09:06:53,226 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:53,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2035019394, now seen corresponding path program 1 times [2025-03-08 09:06:53,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:53,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117195968] [2025-03-08 09:06:53,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:53,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-08 09:06:53,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-08 09:06:53,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:06:53,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:06:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:06:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:06:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117195968] [2025-03-08 09:06:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117195968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:06:53,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:06:53,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 09:06:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153966748] [2025-03-08 09:06:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:06:53,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 09:06:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:06:53,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 09:06:53,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 09:06:53,922 INFO L87 Difference]: Start difference. First operand 6957 states and 10453 transitions. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:06:57,339 INFO L93 Difference]: Finished difference Result 13979 states and 21018 transitions. [2025-03-08 09:06:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 09:06:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2025-03-08 09:06:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:06:57,349 INFO L225 Difference]: With dead ends: 13979 [2025-03-08 09:06:57,349 INFO L226 Difference]: Without dead ends: 7551 [2025-03-08 09:06:57,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 09:06:57,355 INFO L435 NwaCegarLoop]: 8311 mSDtfsCounter, 1430 mSDsluCounter, 32957 mSDsCounter, 0 mSdLazyCounter, 8245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 41268 SdHoareTripleChecker+Invalid, 8247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:06:57,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 41268 Invalid, 8247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8245 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-08 09:06:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7551 states. [2025-03-08 09:06:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7551 to 6958. [2025-03-08 09:06:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 6957 states have (on average 1.5026591921805377) internal successors, (10454), 6957 states have internal predecessors, (10454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10454 transitions. [2025-03-08 09:06:57,438 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10454 transitions. Word has length 277 [2025-03-08 09:06:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:06:57,439 INFO L471 AbstractCegarLoop]: Abstraction has 6958 states and 10454 transitions. [2025-03-08 09:06:57,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:06:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10454 transitions. [2025-03-08 09:06:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3392 [2025-03-08 09:06:57,532 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:06:57,534 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:06:57,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 09:06:57,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:06:57,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:06:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash 559514935, now seen corresponding path program 1 times [2025-03-08 09:06:57,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:06:57,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546892373] [2025-03-08 09:06:57,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:06:57,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:06:57,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3391 statements into 1 equivalence classes. [2025-03-08 09:07:02,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3391 of 3391 statements. [2025-03-08 09:07:02,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:07:02,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:07:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:07:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:07:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546892373] [2025-03-08 09:07:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546892373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:07:06,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:07:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 09:07:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074064793] [2025-03-08 09:07:06,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:07:06,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 09:07:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:07:06,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 09:07:06,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:07:06,573 INFO L87 Difference]: Start difference. First operand 6958 states and 10454 transitions. Second operand has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:07:07,994 INFO L93 Difference]: Finished difference Result 13387 states and 20118 transitions. [2025-03-08 09:07:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 09:07:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3391 [2025-03-08 09:07:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:07:08,004 INFO L225 Difference]: With dead ends: 13387 [2025-03-08 09:07:08,005 INFO L226 Difference]: Without dead ends: 6959 [2025-03-08 09:07:08,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:07:08,012 INFO L435 NwaCegarLoop]: 8315 mSDtfsCounter, 0 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16625 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 09:07:08,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16625 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 09:07:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6959 states. [2025-03-08 09:07:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6959 to 6959. [2025-03-08 09:07:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6958 states have (on average 1.5025869502730669) internal successors, (10455), 6958 states have internal predecessors, (10455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 10455 transitions. [2025-03-08 09:07:08,208 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 10455 transitions. Word has length 3391 [2025-03-08 09:07:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:07:08,208 INFO L471 AbstractCegarLoop]: Abstraction has 6959 states and 10455 transitions. [2025-03-08 09:07:08,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 10455 transitions. [2025-03-08 09:07:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3392 [2025-03-08 09:07:08,259 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:07:08,261 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 09:07:08,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 09:07:08,262 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:07:08,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:07:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1972465000, now seen corresponding path program 1 times [2025-03-08 09:07:08,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:07:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869980303] [2025-03-08 09:07:08,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:07:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:07:08,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3391 statements into 1 equivalence classes. [2025-03-08 09:07:11,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3391 of 3391 statements. [2025-03-08 09:07:11,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:07:11,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:07:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 09:07:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:07:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869980303] [2025-03-08 09:07:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869980303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:07:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:07:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 09:07:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339189574] [2025-03-08 09:07:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:07:14,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 09:07:14,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:07:14,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 09:07:14,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:07:14,837 INFO L87 Difference]: Start difference. First operand 6959 states and 10455 transitions. Second operand has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:07:16,261 INFO L93 Difference]: Finished difference Result 13389 states and 20120 transitions. [2025-03-08 09:07:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 09:07:16,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3391 [2025-03-08 09:07:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:07:16,274 INFO L225 Difference]: With dead ends: 13389 [2025-03-08 09:07:16,274 INFO L226 Difference]: Without dead ends: 6960 [2025-03-08 09:07:16,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:07:16,283 INFO L435 NwaCegarLoop]: 8315 mSDtfsCounter, 0 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16625 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 09:07:16,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16625 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 09:07:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2025-03-08 09:07:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6960. [2025-03-08 09:07:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.5025147291277483) internal successors, (10456), 6959 states have internal predecessors, (10456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 10456 transitions. [2025-03-08 09:07:16,357 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 10456 transitions. Word has length 3391 [2025-03-08 09:07:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:07:16,357 INFO L471 AbstractCegarLoop]: Abstraction has 6960 states and 10456 transitions. [2025-03-08 09:07:16,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1130.3333333333333) internal successors, (3391), 3 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 09:07:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 10456 transitions. [2025-03-08 09:07:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3392 [2025-03-08 09:07:16,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:07:16,408 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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SelfDestructingSolverStorable6 [2025-03-08 09:07:16,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:07:16,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:07:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1101785465, now seen corresponding path program 1 times [2025-03-08 09:07:16,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:07:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121516806] [2025-03-08 09:07:16,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:07:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:07:16,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3391 statements into 1 equivalence classes.