./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 8a0c70500e2bd83a121aaecd5906e653adb326671ed668009339cb988485240a --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 23:04:44,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 23:04:44,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-07 23:04:44,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 23:04:44,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 23:04:44,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 23:04:44,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 23:04:44,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 23:04:44,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 23:04:44,535 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 23:04:44,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 23:04:44,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 23:04:44,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 23:04:44,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 23:04:44,536 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 23:04:44,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 23:04:44,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 23:04:44,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 23:04:44,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 23:04:44,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 23:04:44,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 23:04:44,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 23:04:44,539 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0c70500e2bd83a121aaecd5906e653adb326671ed668009339cb988485240a [2025-02-07 23:04:44,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 23:04:44,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 23:04:44,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 23:04:44,820 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 23:04:44,820 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 23:04:44,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c [2025-02-07 23:04:46,126 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd09eaa2e/58386b1dd49e4ef79ec8c3b83247143f/FLAG3db2cddd3 [2025-02-07 23:04:46,550 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 23:04:46,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c [2025-02-07 23:04:46,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd09eaa2e/58386b1dd49e4ef79ec8c3b83247143f/FLAG3db2cddd3 [2025-02-07 23:04:46,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd09eaa2e/58386b1dd49e4ef79ec8c3b83247143f [2025-02-07 23:04:46,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 23:04:46,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 23:04:46,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 23:04:46,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 23:04:46,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 23:04:46,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 11:04:46" (1/1) ... [2025-02-07 23:04:46,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476cee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:46, skipping insertion in model container [2025-02-07 23:04:46,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 11:04:46" (1/1) ... [2025-02-07 23:04:46,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 23:04:46,899 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/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c[1177,1190] [2025-02-07 23:04:47,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 23:04:47,511 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 23:04:47,519 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/hardware-verification-bv/btor2c-lazyMod.extinction.1.prop1-func-interl.c[1177,1190] [2025-02-07 23:04:47,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 23:04:47,879 INFO L204 MainTranslator]: Completed translation [2025-02-07 23:04:47,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47 WrapperNode [2025-02-07 23:04:47,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 23:04:47,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 23:04:47,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 23:04:47,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 23:04:47,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:48,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:49,984 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18182 [2025-02-07 23:04:49,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 23:04:49,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 23:04:49,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 23:04:49,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 23:04:50,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:50,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:50,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:50,823 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]. [2025-02-07 23:04:50,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:50,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,469 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 23:04:51,898 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 23:04:51,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 23:04:51,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 23:04:51,899 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (1/1) ... [2025-02-07 23:04:51,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 23:04:51,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 23:04:51,945 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) [2025-02-07 23:04:51,958 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 [2025-02-07 23:04:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 23:04:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 23:04:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 23:04:51,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 23:04:53,271 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 23:04:53,273 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 23:05:27,752 INFO L? ?]: Removed 10179 outVars from TransFormulas that were not future-live. [2025-02-07 23:05:27,753 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 23:05:28,236 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 23:05:28,236 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 23:05:28,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 11:05:28 BoogieIcfgContainer [2025-02-07 23:05:28,237 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 23:05:28,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 23:05:28,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 23:05:28,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 23:05:28,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 11:04:46" (1/3) ... [2025-02-07 23:05:28,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0852d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 11:05:28, skipping insertion in model container [2025-02-07 23:05:28,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 11:04:47" (2/3) ... [2025-02-07 23:05:28,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0852d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 11:05:28, skipping insertion in model container [2025-02-07 23:05:28,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 11:05:28" (3/3) ... [2025-02-07 23:05:28,248 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.extinction.1.prop1-func-interl.c [2025-02-07 23:05:28,263 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 23:05:28,266 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.extinction.1.prop1-func-interl.c that has 1 procedures, 6372 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 23:05:28,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 23:05:28,426 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;@47b83b43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 23:05:28,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 23:05:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 6372 states, 6370 states have (on average 1.5031397174254317) internal successors, (9575), 6371 states have internal predecessors, (9575), 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) [2025-02-07 23:05:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-02-07 23:05:28,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:28,470 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] [2025-02-07 23:05:28,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:28,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash 963365277, now seen corresponding path program 1 times [2025-02-07 23:05:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764441790] [2025-02-07 23:05:28,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:28,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-02-07 23:05:29,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-02-07 23:05:29,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:29,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:30,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764441790] [2025-02-07 23:05:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764441790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:30,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:30,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:05:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734844074] [2025-02-07 23:05:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:30,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:05:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:30,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:05:30,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:05:30,844 INFO L87 Difference]: Start difference. First operand has 6372 states, 6370 states have (on average 1.5031397174254317) internal successors, (9575), 6371 states have internal predecessors, (9575), 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 65.5) internal successors, (262), 4 states have internal predecessors, (262), 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) [2025-02-07 23:05:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:05:33,873 INFO L93 Difference]: Finished difference Result 12435 states and 18689 transitions. [2025-02-07 23:05:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:05:33,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 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 262 [2025-02-07 23:05:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:05:33,913 INFO L225 Difference]: With dead ends: 12435 [2025-02-07 23:05:33,913 INFO L226 Difference]: Without dead ends: 6372 [2025-02-07 23:05:33,927 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 [2025-02-07 23:05:33,929 INFO L435 NwaCegarLoop]: 7989 mSDtfsCounter, 0 mSDsluCounter, 15973 mSDsCounter, 0 mSdLazyCounter, 4753 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23962 SdHoareTripleChecker+Invalid, 4753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-07 23:05:33,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23962 Invalid, 4753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 4753 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-07 23:05:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2025-02-07 23:05:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6372. [2025-02-07 23:05:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6372 states, 6371 states have (on average 1.5027468215350808) internal successors, (9574), 6371 states have internal predecessors, (9574), 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) [2025-02-07 23:05:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 9574 transitions. [2025-02-07 23:05:34,138 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 9574 transitions. Word has length 262 [2025-02-07 23:05:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:05:34,143 INFO L471 AbstractCegarLoop]: Abstraction has 6372 states and 9574 transitions. [2025-02-07 23:05:34,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 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) [2025-02-07 23:05:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 9574 transitions. [2025-02-07 23:05:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2025-02-07 23:05:34,148 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:34,149 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] [2025-02-07 23:05:34,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 23:05:34,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:34,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash -195758098, now seen corresponding path program 1 times [2025-02-07 23:05:34,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:34,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168148957] [2025-02-07 23:05:34,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:34,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:34,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 263 statements into 1 equivalence classes. [2025-02-07 23:05:34,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 263 of 263 statements. [2025-02-07 23:05:34,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:34,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168148957] [2025-02-07 23:05:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168148957] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:34,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:34,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:05:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939881393] [2025-02-07 23:05:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:34,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:05:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:34,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:05:34,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:05:34,725 INFO L87 Difference]: Start difference. First operand 6372 states and 9574 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2025-02-07 23:05:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:05:37,585 INFO L93 Difference]: Finished difference Result 12437 states and 18688 transitions. [2025-02-07 23:05:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:05:37,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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 263 [2025-02-07 23:05:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:05:37,612 INFO L225 Difference]: With dead ends: 12437 [2025-02-07 23:05:37,613 INFO L226 Difference]: Without dead ends: 6374 [2025-02-07 23:05:37,619 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 [2025-02-07 23:05:37,621 INFO L435 NwaCegarLoop]: 7989 mSDtfsCounter, 0 mSDsluCounter, 15970 mSDsCounter, 0 mSdLazyCounter, 4756 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23959 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-02-07 23:05:37,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23959 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4756 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-02-07 23:05:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6374 states. [2025-02-07 23:05:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6374 to 6374. [2025-02-07 23:05:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6374 states, 6373 states have (on average 1.5025890475443275) internal successors, (9576), 6373 states have internal predecessors, (9576), 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) [2025-02-07 23:05:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6374 states to 6374 states and 9576 transitions. [2025-02-07 23:05:37,754 INFO L78 Accepts]: Start accepts. Automaton has 6374 states and 9576 transitions. Word has length 263 [2025-02-07 23:05:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:05:37,755 INFO L471 AbstractCegarLoop]: Abstraction has 6374 states and 9576 transitions. [2025-02-07 23:05:37,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2025-02-07 23:05:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6374 states and 9576 transitions. [2025-02-07 23:05:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2025-02-07 23:05:37,760 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:37,760 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] [2025-02-07 23:05:37,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 23:05:37,760 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:37,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash 157985720, now seen corresponding path program 1 times [2025-02-07 23:05:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747640642] [2025-02-07 23:05:37,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:37,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 264 statements into 1 equivalence classes. [2025-02-07 23:05:37,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 264 of 264 statements. [2025-02-07 23:05:37,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:37,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747640642] [2025-02-07 23:05:38,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747640642] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:38,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:38,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:05:38,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228789125] [2025-02-07 23:05:38,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:38,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 23:05:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:38,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 23:05:38,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 23:05:38,268 INFO L87 Difference]: Start difference. First operand 6374 states and 9576 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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) [2025-02-07 23:05:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:05:40,854 INFO L93 Difference]: Finished difference Result 12445 states and 18698 transitions. [2025-02-07 23:05:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:05:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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 264 [2025-02-07 23:05:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:05:40,875 INFO L225 Difference]: With dead ends: 12445 [2025-02-07 23:05:40,875 INFO L226 Difference]: Without dead ends: 6380 [2025-02-07 23:05:40,885 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 [2025-02-07 23:05:40,886 INFO L435 NwaCegarLoop]: 7989 mSDtfsCounter, 4 mSDsluCounter, 15965 mSDsCounter, 0 mSdLazyCounter, 4761 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23954 SdHoareTripleChecker+Invalid, 4761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-07 23:05:40,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23954 Invalid, 4761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4761 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-07 23:05:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6380 states. [2025-02-07 23:05:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6380 to 6380. [2025-02-07 23:05:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6379 states have (on average 1.5024298479385483) internal successors, (9584), 6379 states have internal predecessors, (9584), 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) [2025-02-07 23:05:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 9584 transitions. [2025-02-07 23:05:40,996 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 9584 transitions. Word has length 264 [2025-02-07 23:05:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:05:40,997 INFO L471 AbstractCegarLoop]: Abstraction has 6380 states and 9584 transitions. [2025-02-07 23:05:40,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 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) [2025-02-07 23:05:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 9584 transitions. [2025-02-07 23:05:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2025-02-07 23:05:41,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:41,001 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] [2025-02-07 23:05:41,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 23:05:41,001 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:41,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash -318324680, now seen corresponding path program 1 times [2025-02-07 23:05:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766553045] [2025-02-07 23:05:41,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:41,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:41,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 265 statements into 1 equivalence classes. [2025-02-07 23:05:41,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 265 of 265 statements. [2025-02-07 23:05:41,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:41,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766553045] [2025-02-07 23:05:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766553045] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:41,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:05:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565470949] [2025-02-07 23:05:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:41,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:05:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:41,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:05:41,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:05:41,525 INFO L87 Difference]: Start difference. First operand 6380 states and 9584 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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) [2025-02-07 23:05:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:05:43,892 INFO L93 Difference]: Finished difference Result 12455 states and 18710 transitions. [2025-02-07 23:05:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 23:05:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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 265 [2025-02-07 23:05:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:05:43,908 INFO L225 Difference]: With dead ends: 12455 [2025-02-07 23:05:43,909 INFO L226 Difference]: Without dead ends: 6384 [2025-02-07 23:05:43,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:05:43,914 INFO L435 NwaCegarLoop]: 7989 mSDtfsCounter, 0 mSDsluCounter, 15965 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23954 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-07 23:05:43,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23954 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-07 23:05:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2025-02-07 23:05:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6380. [2025-02-07 23:05:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6379 states have (on average 1.5024298479385483) internal successors, (9584), 6379 states have internal predecessors, (9584), 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) [2025-02-07 23:05:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 9584 transitions. [2025-02-07 23:05:44,015 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 9584 transitions. Word has length 265 [2025-02-07 23:05:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:05:44,016 INFO L471 AbstractCegarLoop]: Abstraction has 6380 states and 9584 transitions. [2025-02-07 23:05:44,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 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) [2025-02-07 23:05:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 9584 transitions. [2025-02-07 23:05:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-07 23:05:44,019 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:44,019 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] [2025-02-07 23:05:44,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 23:05:44,020 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:44,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash 610242259, now seen corresponding path program 1 times [2025-02-07 23:05:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236518034] [2025-02-07 23:05:44,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:44,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:44,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 266 statements into 1 equivalence classes. [2025-02-07 23:05:44,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 266 of 266 statements. [2025-02-07 23:05:44,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:44,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236518034] [2025-02-07 23:05:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236518034] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 23:05:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963351426] [2025-02-07 23:05:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:44,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 23:05:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:44,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 23:05:44,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 23:05:44,662 INFO L87 Difference]: Start difference. First operand 6380 states and 9584 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 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) [2025-02-07 23:05:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 23:05:52,620 INFO L93 Difference]: Finished difference Result 18506 states and 27802 transitions. [2025-02-07 23:05:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 23:05:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 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 266 [2025-02-07 23:05:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 23:05:52,643 INFO L225 Difference]: With dead ends: 18506 [2025-02-07 23:05:52,643 INFO L226 Difference]: Without dead ends: 12435 [2025-02-07 23:05:52,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:05:52,651 INFO L435 NwaCegarLoop]: 6306 mSDtfsCounter, 9301 mSDsluCounter, 18666 mSDsCounter, 0 mSdLazyCounter, 12853 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9301 SdHoareTripleChecker+Valid, 24972 SdHoareTripleChecker+Invalid, 12854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2025-02-07 23:05:52,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9301 Valid, 24972 Invalid, 12854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12853 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2025-02-07 23:05:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12435 states. [2025-02-07 23:05:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12435 to 6575. [2025-02-07 23:05:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.502129601460298) internal successors, (9875), 6574 states have internal predecessors, (9875), 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) [2025-02-07 23:05:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 9875 transitions. [2025-02-07 23:05:52,786 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 9875 transitions. Word has length 266 [2025-02-07 23:05:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 23:05:52,787 INFO L471 AbstractCegarLoop]: Abstraction has 6575 states and 9875 transitions. [2025-02-07 23:05:52,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 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) [2025-02-07 23:05:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 9875 transitions. [2025-02-07 23:05:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2025-02-07 23:05:52,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 23:05:52,791 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] [2025-02-07 23:05:52,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 23:05:52,791 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 23:05:52,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 23:05:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 498655516, now seen corresponding path program 1 times [2025-02-07 23:05:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 23:05:52,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963653444] [2025-02-07 23:05:52,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 23:05:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 23:05:52,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 267 statements into 1 equivalence classes. [2025-02-07 23:05:52,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 267 of 267 statements. [2025-02-07 23:05:52,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 23:05:52,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 23:05:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 23:05:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 23:05:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963653444] [2025-02-07 23:05:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963653444] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 23:05:53,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 23:05:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 23:05:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737214693] [2025-02-07 23:05:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 23:05:53,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 23:05:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 23:05:53,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 23:05:53,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 23:05:53,635 INFO L87 Difference]: Start difference. First operand 6575 states and 9875 transitions. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 5 states have internal predecessors, (267), 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)