./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 19:26:17,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 19:26:17,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 19:26:17,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 19:26:17,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 19:26:17,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 19:26:17,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 19:26:17,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 19:26:17,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 19:26:17,982 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 19:26:17,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 19:26:17,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 19:26:17,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 19:26:17,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 19:26:17,983 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 19:26:17,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 19:26:17,984 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 19:26:17,985 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:26:17,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 19:26:17,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 19:26:17,985 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 372612807ec8a09625942983a4318ea5cf13bd58b55643cc4c787d7ad1a0ebc5 [2025-03-03 19:26:18,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 19:26:18,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 19:26:18,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 19:26:18,204 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 19:26:18,205 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 19:26:18,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-03 19:26:19,370 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5d868e2/c8e8c399754e44498a1bdbec0f3c102c/FLAGb77bc0cbf [2025-03-03 19:26:19,607 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 19:26:19,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-03 19:26:19,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5d868e2/c8e8c399754e44498a1bdbec0f3c102c/FLAGb77bc0cbf [2025-03-03 19:26:19,944 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5d868e2/c8e8c399754e44498a1bdbec0f3c102c [2025-03-03 19:26:19,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 19:26:19,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 19:26:19,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 19:26:19,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 19:26:19,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 19:26:19,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:26:19" (1/1) ... [2025-03-03 19:26:19,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0077c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:19, skipping insertion in model container [2025-03-03 19:26:19,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:26:19" (1/1) ... [2025-03-03 19:26:19,970 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 19:26:20,076 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2025-03-03 19:26:20,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:26:20,178 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 19:26:20,185 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i[916,929] [2025-03-03 19:26:20,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:26:20,241 INFO L204 MainTranslator]: Completed translation [2025-03-03 19:26:20,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20 WrapperNode [2025-03-03 19:26:20,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 19:26:20,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 19:26:20,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 19:26:20,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 19:26:20,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,294 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 324 [2025-03-03 19:26:20,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 19:26:20,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 19:26:20,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 19:26:20,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 19:26:20,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,337 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]. [2025-03-03 19:26:20,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 19:26:20,377 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 19:26:20,377 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 19:26:20,377 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 19:26:20,378 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (1/1) ... [2025-03-03 19:26:20,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:26:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:26:20,404 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) [2025-03-03 19:26:20,410 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 [2025-03-03 19:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 19:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 19:26:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 19:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 19:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 19:26:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 19:26:20,505 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 19:26:20,507 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 19:26:20,986 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-03 19:26:20,986 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 19:26:21,001 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 19:26:21,001 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 19:26:21,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:26:21 BoogieIcfgContainer [2025-03-03 19:26:21,002 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 19:26:21,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 19:26:21,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 19:26:21,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 19:26:21,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 07:26:19" (1/3) ... [2025-03-03 19:26:21,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efc0c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:26:21, skipping insertion in model container [2025-03-03 19:26:21,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:26:20" (2/3) ... [2025-03-03 19:26:21,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efc0c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:26:21, skipping insertion in model container [2025-03-03 19:26:21,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:26:21" (3/3) ... [2025-03-03 19:26:21,008 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2025-03-03 19:26:21,017 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 19:26:21,019 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i that has 2 procedures, 140 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 19:26:21,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 19:26:21,069 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;@78037378, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 19:26:21,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 19:26:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 80 states have (on average 1.4125) internal successors, (113), 81 states have internal predecessors, (113), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-03 19:26:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2025-03-03 19:26:21,091 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:21,091 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:21,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:21,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1761421225, now seen corresponding path program 1 times [2025-03-03 19:26:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403305574] [2025-03-03 19:26:21,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:21,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:21,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 348 statements into 1 equivalence classes. [2025-03-03 19:26:21,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 348 of 348 statements. [2025-03-03 19:26:21,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:21,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2025-03-03 19:26:21,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403305574] [2025-03-03 19:26:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403305574] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:26:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274946848] [2025-03-03 19:26:21,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:21,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:26:21,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:26:21,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:26:21,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 19:26:21,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 348 statements into 1 equivalence classes. [2025-03-03 19:26:21,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 348 of 348 statements. [2025-03-03 19:26:21,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:21,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:21,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 19:26:21,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:26:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2025-03-03 19:26:21,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 19:26:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274946848] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 19:26:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 19:26:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535232028] [2025-03-03 19:26:21,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:21,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 19:26:21,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:21,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 19:26:21,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:26:21,749 INFO L87 Difference]: Start difference. First operand has 140 states, 80 states have (on average 1.4125) internal successors, (113), 81 states have internal predecessors, (113), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2025-03-03 19:26:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:21,778 INFO L93 Difference]: Finished difference Result 274 states and 506 transitions. [2025-03-03 19:26:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 19:26:21,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 348 [2025-03-03 19:26:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:21,784 INFO L225 Difference]: With dead ends: 274 [2025-03-03 19:26:21,785 INFO L226 Difference]: Without dead ends: 137 [2025-03-03 19:26:21,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:26:21,789 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:21,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:26:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-03-03 19:26:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2025-03-03 19:26:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 78 states have internal predecessors, (108), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-03 19:26:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 222 transitions. [2025-03-03 19:26:21,863 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 222 transitions. Word has length 348 [2025-03-03 19:26:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:21,863 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 222 transitions. [2025-03-03 19:26:21,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2025-03-03 19:26:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 222 transitions. [2025-03-03 19:26:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2025-03-03 19:26:21,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:21,867 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:21,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 19:26:22,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 19:26:22,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:22,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1970180980, now seen corresponding path program 1 times [2025-03-03 19:26:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:22,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215042397] [2025-03-03 19:26:22,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:22,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 348 statements into 1 equivalence classes. [2025-03-03 19:26:22,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 348 of 348 statements. [2025-03-03 19:26:22,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:22,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-03 19:26:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215042397] [2025-03-03 19:26:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215042397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:26:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:26:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882140706] [2025-03-03 19:26:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:22,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:26:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:22,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:26:22,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:26:22,368 INFO L87 Difference]: Start difference. First operand 137 states and 222 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:22,447 INFO L93 Difference]: Finished difference Result 365 states and 592 transitions. [2025-03-03 19:26:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:26:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 348 [2025-03-03 19:26:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:22,452 INFO L225 Difference]: With dead ends: 365 [2025-03-03 19:26:22,453 INFO L226 Difference]: Without dead ends: 231 [2025-03-03 19:26:22,456 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 [2025-03-03 19:26:22,457 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 144 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:22,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 558 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:26:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-03 19:26:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2025-03-03 19:26:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 130 states have (on average 1.376923076923077) internal successors, (179), 131 states have internal predecessors, (179), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-03 19:26:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 369 transitions. [2025-03-03 19:26:22,497 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 369 transitions. Word has length 348 [2025-03-03 19:26:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:22,497 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 369 transitions. [2025-03-03 19:26:22,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 369 transitions. [2025-03-03 19:26:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2025-03-03 19:26:22,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:22,502 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:22,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 19:26:22,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:22,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1230301051, now seen corresponding path program 1 times [2025-03-03 19:26:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:22,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954582728] [2025-03-03 19:26:22,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:22,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 349 statements into 1 equivalence classes. [2025-03-03 19:26:22,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 349 of 349 statements. [2025-03-03 19:26:22,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:22,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-03 19:26:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954582728] [2025-03-03 19:26:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954582728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:26:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:26:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191953156] [2025-03-03 19:26:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:23,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:26:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:23,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:26:23,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:26:23,760 INFO L87 Difference]: Start difference. First operand 228 states and 369 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:23,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:23,874 INFO L93 Difference]: Finished difference Result 533 states and 845 transitions. [2025-03-03 19:26:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 19:26:23,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 349 [2025-03-03 19:26:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:23,879 INFO L225 Difference]: With dead ends: 533 [2025-03-03 19:26:23,881 INFO L226 Difference]: Without dead ends: 308 [2025-03-03 19:26:23,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:26:23,882 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 50 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:23,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 860 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 19:26:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-03-03 19:26:23,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 276. [2025-03-03 19:26:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 168 states have (on average 1.3630952380952381) internal successors, (229), 171 states have internal predecessors, (229), 103 states have call successors, (103), 4 states have call predecessors, (103), 4 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2025-03-03 19:26:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 435 transitions. [2025-03-03 19:26:23,927 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 435 transitions. Word has length 349 [2025-03-03 19:26:23,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:23,929 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 435 transitions. [2025-03-03 19:26:23,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 435 transitions. [2025-03-03 19:26:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2025-03-03 19:26:23,934 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:23,935 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:23,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 19:26:23,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:23,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1321855910, now seen corresponding path program 1 times [2025-03-03 19:26:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809917972] [2025-03-03 19:26:23,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:23,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 349 statements into 1 equivalence classes. [2025-03-03 19:26:24,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 349 of 349 statements. [2025-03-03 19:26:24,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:24,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-03 19:26:28,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809917972] [2025-03-03 19:26:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809917972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:28,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:26:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-03 19:26:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586257059] [2025-03-03 19:26:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:28,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 19:26:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:28,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 19:26:28,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-03 19:26:28,803 INFO L87 Difference]: Start difference. First operand 276 states and 435 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 5 states have call predecessors, (57), 5 states have call successors, (57) [2025-03-03 19:26:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:34,710 INFO L93 Difference]: Finished difference Result 1862 states and 2860 transitions. [2025-03-03 19:26:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-03 19:26:34,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 5 states have call predecessors, (57), 5 states have call successors, (57) Word has length 349 [2025-03-03 19:26:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:34,719 INFO L225 Difference]: With dead ends: 1862 [2025-03-03 19:26:34,719 INFO L226 Difference]: Without dead ends: 1589 [2025-03-03 19:26:34,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2025-03-03 19:26:34,721 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 1283 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:34,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1119 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-03-03 19:26:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2025-03-03 19:26:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1200. [2025-03-03 19:26:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 777 states have (on average 1.3655083655083655) internal successors, (1061), 796 states have internal predecessors, (1061), 388 states have call successors, (388), 34 states have call predecessors, (388), 34 states have return successors, (388), 369 states have call predecessors, (388), 388 states have call successors, (388) [2025-03-03 19:26:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1837 transitions. [2025-03-03 19:26:34,894 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1837 transitions. Word has length 349 [2025-03-03 19:26:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:34,895 INFO L471 AbstractCegarLoop]: Abstraction has 1200 states and 1837 transitions. [2025-03-03 19:26:34,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 5 states have call predecessors, (57), 5 states have call successors, (57) [2025-03-03 19:26:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1837 transitions. [2025-03-03 19:26:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2025-03-03 19:26:34,898 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:34,898 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:34,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 19:26:34,899 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:34,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1110504997, now seen corresponding path program 1 times [2025-03-03 19:26:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947096680] [2025-03-03 19:26:34,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:34,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:34,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 349 statements into 1 equivalence classes. [2025-03-03 19:26:35,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 349 of 349 statements. [2025-03-03 19:26:35,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:35,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-03 19:26:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947096680] [2025-03-03 19:26:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947096680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:41,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:26:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-03 19:26:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576746780] [2025-03-03 19:26:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:41,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 19:26:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:41,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 19:26:41,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-03-03 19:26:41,879 INFO L87 Difference]: Start difference. First operand 1200 states and 1837 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:43,018 INFO L93 Difference]: Finished difference Result 2679 states and 4048 transitions. [2025-03-03 19:26:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 19:26:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 349 [2025-03-03 19:26:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:43,032 INFO L225 Difference]: With dead ends: 2679 [2025-03-03 19:26:43,032 INFO L226 Difference]: Without dead ends: 1516 [2025-03-03 19:26:43,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2025-03-03 19:26:43,038 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 90 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:43,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1781 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 19:26:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2025-03-03 19:26:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1300. [2025-03-03 19:26:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 877 states have (on average 1.3580387685290765) internal successors, (1191), 896 states have internal predecessors, (1191), 388 states have call successors, (388), 34 states have call predecessors, (388), 34 states have return successors, (388), 369 states have call predecessors, (388), 388 states have call successors, (388) [2025-03-03 19:26:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1967 transitions. [2025-03-03 19:26:43,241 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1967 transitions. Word has length 349 [2025-03-03 19:26:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:43,244 INFO L471 AbstractCegarLoop]: Abstraction has 1300 states and 1967 transitions. [2025-03-03 19:26:43,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1967 transitions. [2025-03-03 19:26:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2025-03-03 19:26:43,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:43,247 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:43,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 19:26:43,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:43,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1377007836, now seen corresponding path program 1 times [2025-03-03 19:26:43,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:43,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973975770] [2025-03-03 19:26:43,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:43,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:43,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 349 statements into 1 equivalence classes. [2025-03-03 19:26:43,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 349 of 349 statements. [2025-03-03 19:26:43,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:43,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:26:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2025-03-03 19:26:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:26:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973975770] [2025-03-03 19:26:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973975770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:26:49,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:26:49,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-03 19:26:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659111432] [2025-03-03 19:26:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:26:49,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 19:26:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:26:49,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 19:26:49,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-03-03 19:26:49,427 INFO L87 Difference]: Start difference. First operand 1300 states and 1967 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:26:50,832 INFO L93 Difference]: Finished difference Result 2809 states and 4198 transitions. [2025-03-03 19:26:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 19:26:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 349 [2025-03-03 19:26:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:26:50,843 INFO L225 Difference]: With dead ends: 2809 [2025-03-03 19:26:50,844 INFO L226 Difference]: Without dead ends: 1546 [2025-03-03 19:26:50,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2025-03-03 19:26:50,848 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 65 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 19:26:50,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1614 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 19:26:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2025-03-03 19:26:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1290. [2025-03-03 19:26:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 867 states have (on average 1.362168396770473) internal successors, (1181), 886 states have internal predecessors, (1181), 388 states have call successors, (388), 34 states have call predecessors, (388), 34 states have return successors, (388), 369 states have call predecessors, (388), 388 states have call successors, (388) [2025-03-03 19:26:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1957 transitions. [2025-03-03 19:26:51,035 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1957 transitions. Word has length 349 [2025-03-03 19:26:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:26:51,036 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 1957 transitions. [2025-03-03 19:26:51,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2025-03-03 19:26:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1957 transitions. [2025-03-03 19:26:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2025-03-03 19:26:51,039 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:26:51,040 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:26:51,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 19:26:51,040 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:26:51,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:26:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash -355299395, now seen corresponding path program 1 times [2025-03-03 19:26:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:26:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107044734] [2025-03-03 19:26:51,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:26:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:26:51,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 349 statements into 1 equivalence classes. [2025-03-03 19:26:51,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 349 of 349 statements. [2025-03-03 19:26:51,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:26:51,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat