/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver Internal_SMTInterpol -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:06:34,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:06:35,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 21:06:35,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:06:35,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:06:35,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:06:35,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:06:35,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:06:35,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:06:35,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:06:35,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:06:35,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:06:35,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:06:35,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:06:35,044 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:06:35,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:06:35,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:06:35,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:06:35,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:06:35,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:06:35,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:06:35,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:06:35,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:06:35,048 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:06:35,049 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:06:35,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:06:35,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:06:35,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:06:35,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:06:35,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:06:35,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:06:35,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:06:35,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:06:35,052 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:06:35,053 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:06:35,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:06:35,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:06:35,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:06:35,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:06:35,054 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-02 21:06:35,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:06:35,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:06:35,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:06:35,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:06:35,242 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:06:35,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-02 21:06:36,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:06:36,537 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:06:36,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-02 21:06:36,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a580e7b72/f8a3dcdc0d1b4179a4f263c153f13153/FLAG85a987e37 [2024-11-02 21:06:36,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a580e7b72/f8a3dcdc0d1b4179a4f263c153f13153 [2024-11-02 21:06:36,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:06:36,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:06:36,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:06:36,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:06:36,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:06:36,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:36" (1/1) ... [2024-11-02 21:06:36,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe719b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:36, skipping insertion in model container [2024-11-02 21:06:36,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:36" (1/1) ... [2024-11-02 21:06:36,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:06:37,109 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-02 21:06:37,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:06:37,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:06:37,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-02 21:06:37,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:06:37,168 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:06:37,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37 WrapperNode [2024-11-02 21:06:37,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:06:37,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:06:37,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:06:37,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:06:37,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,195 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-11-02 21:06:37,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:06:37,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:06:37,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:06:37,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:06:37,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,214 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-02 21:06:37,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:06:37,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:06:37,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:06:37,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:06:37,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (1/1) ... [2024-11-02 21:06:37,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:06:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:06:37,248 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) [2024-11-02 21:06:37,252 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 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-02 21:06:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-02 21:06:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-02 21:06:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:06:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:06:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 21:06:37,357 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:06:37,358 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:06:37,557 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-02 21:06:37,557 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:06:37,565 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:06:37,566 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 21:06:37,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:37 BoogieIcfgContainer [2024-11-02 21:06:37,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:06:37,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:06:37,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:06:37,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:06:37,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:36" (1/3) ... [2024-11-02 21:06:37,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5c476b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:37, skipping insertion in model container [2024-11-02 21:06:37,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:37" (2/3) ... [2024-11-02 21:06:37,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5c476b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:37, skipping insertion in model container [2024-11-02 21:06:37,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:37" (3/3) ... [2024-11-02 21:06:37,574 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries2.c [2024-11-02 21:06:37,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:06:37,585 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:06:37,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:06:37,624 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;@64ba80c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:06:37,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:06:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 21:06:37,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:37,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:37,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:37,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1909413201, now seen corresponding path program 1 times [2024-11-02 21:06:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:37,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951250564] [2024-11-02 21:06:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:37,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 21:06:37,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:37,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:37,885 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951250564] [2024-11-02 21:06:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1951250564] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:37,886 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-02 21:06:37,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188109131] [2024-11-02 21:06:37,889 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 21:06:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:37,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 21:06:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 21:06:37,907 INFO L87 Difference]: Start difference. First operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 21:06:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:37,954 INFO L93 Difference]: Finished difference Result 75 states and 108 transitions. [2024-11-02 21:06:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 21:06:37,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-02 21:06:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:37,961 INFO L225 Difference]: With dead ends: 75 [2024-11-02 21:06:37,961 INFO L226 Difference]: Without dead ends: 39 [2024-11-02 21:06:37,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 21:06:37,965 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:37,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-02 21:06:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-02 21:06:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:06:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-02 21:06:37,989 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2024-11-02 21:06:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:37,989 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-02 21:06:37,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 21:06:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-02 21:06:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 21:06:37,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:37,990 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:37,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 21:06:37,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:37,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2092151088, now seen corresponding path program 1 times [2024-11-02 21:06:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:37,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624909370] [2024-11-02 21:06:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:38,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:38,077 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624909370] [2024-11-02 21:06:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [624909370] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,078 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-02 21:06:38,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910754803] [2024-11-02 21:06:38,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 21:06:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 21:06:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:06:38,082 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 21:06:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,099 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-02 21:06:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 21:06:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,102 INFO L225 Difference]: With dead ends: 43 [2024-11-02 21:06:38,102 INFO L226 Difference]: Without dead ends: 39 [2024-11-02 21:06:38,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:06:38,103 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-02 21:06:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-02 21:06:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:06:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-02 21:06:38,109 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 17 [2024-11-02 21:06:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,110 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-02 21:06:38,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 21:06:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-02 21:06:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 21:06:38,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 21:06:38,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1014348991, now seen corresponding path program 1 times [2024-11-02 21:06:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630691194] [2024-11-02 21:06:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:38,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 21:06:38,182 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630691194] [2024-11-02 21:06:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [630691194] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,183 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-02 21:06:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835952988] [2024-11-02 21:06:38,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:06:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:06:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,184 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 21:06:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,209 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-11-02 21:06:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-02 21:06:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,210 INFO L225 Difference]: With dead ends: 66 [2024-11-02 21:06:38,210 INFO L226 Difference]: Without dead ends: 39 [2024-11-02 21:06:38,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,212 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-02 21:06:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-02 21:06:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:06:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2024-11-02 21:06:38,219 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 19 [2024-11-02 21:06:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,220 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2024-11-02 21:06:38,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 21:06:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2024-11-02 21:06:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 21:06:38,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,222 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 21:06:38,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash 719872684, now seen corresponding path program 1 times [2024-11-02 21:06:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224244673] [2024-11-02 21:06:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 21:06:38,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 21:06:38,300 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224244673] [2024-11-02 21:06:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1224244673] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,301 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-02 21:06:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14024786] [2024-11-02 21:06:38,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:06:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:06:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,302 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 21:06:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,328 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2024-11-02 21:06:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-02 21:06:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,331 INFO L225 Difference]: With dead ends: 69 [2024-11-02 21:06:38,331 INFO L226 Difference]: Without dead ends: 39 [2024-11-02 21:06:38,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,332 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-02 21:06:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-11-02 21:06:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-02 21:06:38,339 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 31 [2024-11-02 21:06:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,339 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-02 21:06:38,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 21:06:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-02 21:06:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-02 21:06:38,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,340 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 21:06:38,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash 683802393, now seen corresponding path program 1 times [2024-11-02 21:06:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550157733] [2024-11-02 21:06:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,430 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550157733] [2024-11-02 21:06:38,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [550157733] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,431 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 21:06:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886369553] [2024-11-02 21:06:38,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 21:06:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 21:06:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:06:38,432 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,453 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-02 21:06:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:06:38,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-02 21:06:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,456 INFO L225 Difference]: With dead ends: 40 [2024-11-02 21:06:38,456 INFO L226 Difference]: Without dead ends: 35 [2024-11-02 21:06:38,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:06:38,457 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-02 21:06:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-02 21:06:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-02 21:06:38,460 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 37 [2024-11-02 21:06:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,460 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-02 21:06:38,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-02 21:06:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-02 21:06:38,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,461 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 21:06:38,461 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689165, now seen corresponding path program 1 times [2024-11-02 21:06:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215318342] [2024-11-02 21:06:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,589 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215318342] [2024-11-02 21:06:38,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [215318342] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,589 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 21:06:38,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809555628] [2024-11-02 21:06:38,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:06:38,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:06:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,590 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,617 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-11-02 21:06:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-11-02 21:06:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,618 INFO L225 Difference]: With dead ends: 52 [2024-11-02 21:06:38,618 INFO L226 Difference]: Without dead ends: 45 [2024-11-02 21:06:38,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,619 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-02 21:06:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-02 21:06:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-02 21:06:38,627 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 40 [2024-11-02 21:06:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,627 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-02 21:06:38,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-02 21:06:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 21:06:38,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,630 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 21:06:38,631 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash 35157834, now seen corresponding path program 1 times [2024-11-02 21:06:38,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977120167] [2024-11-02 21:06:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 21:06:38,715 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977120167] [2024-11-02 21:06:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [977120167] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,715 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-02 21:06:38,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239400506] [2024-11-02 21:06:38,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:06:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:06:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,717 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,739 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-02 21:06:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-02 21:06:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,740 INFO L225 Difference]: With dead ends: 49 [2024-11-02 21:06:38,740 INFO L226 Difference]: Without dead ends: 43 [2024-11-02 21:06:38,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,741 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-02 21:06:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-02 21:06:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-02 21:06:38,746 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 42 [2024-11-02 21:06:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,746 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-02 21:06:38,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-02 21:06:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-02 21:06:38,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,747 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 21:06:38,747 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 542098259, now seen corresponding path program 1 times [2024-11-02 21:06:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813437300] [2024-11-02 21:06:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:38,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:06:38,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 21:06:38,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-02 21:06:38,911 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813437300] [2024-11-02 21:06:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [813437300] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:06:38,911 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:06:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 21:06:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111430588] [2024-11-02 21:06:38,911 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:06:38,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:06:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:06:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,913 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:38,934 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2024-11-02 21:06:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:06:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-02 21:06:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:38,935 INFO L225 Difference]: With dead ends: 69 [2024-11-02 21:06:38,935 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 21:06:38,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:06:38,936 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:38,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 21:06:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 21:06:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-02 21:06:38,944 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 50 [2024-11-02 21:06:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:38,944 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-02 21:06:38,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-02 21:06:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-02 21:06:38,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:38,946 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:38,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 21:06:38,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:38,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash 841034003, now seen corresponding path program 1 times [2024-11-02 21:06:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:38,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703333980] [2024-11-02 21:06:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:38,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:39,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:06:39,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-02 21:06:39,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-02 21:06:39,147 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:39,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703333980] [2024-11-02 21:06:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1703333980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:39,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:39,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 21:06:39,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853885195] [2024-11-02 21:06:39,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:39,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:06:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:39,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:06:39,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:06:39,148 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:39,197 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2024-11-02 21:06:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 21:06:39,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2024-11-02 21:06:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:39,199 INFO L225 Difference]: With dead ends: 85 [2024-11-02 21:06:39,199 INFO L226 Difference]: Without dead ends: 63 [2024-11-02 21:06:39,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:06:39,200 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 9 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:39,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 219 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:06:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-02 21:06:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-02 21:06:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-11-02 21:06:39,205 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 62 [2024-11-02 21:06:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:39,205 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-02 21:06:39,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-11-02 21:06:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-02 21:06:39,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:39,206 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:39,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 21:06:39,206 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:39,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 923057875, now seen corresponding path program 2 times [2024-11-02 21:06:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100340469] [2024-11-02 21:06:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:39,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:06:39,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-02 21:06:39,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-02 21:06:39,520 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100340469] [2024-11-02 21:06:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2100340469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:39,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 21:06:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947160858] [2024-11-02 21:06:39,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:39,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:06:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:06:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:06:39,522 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:39,596 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2024-11-02 21:06:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 21:06:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-02 21:06:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:39,597 INFO L225 Difference]: With dead ends: 104 [2024-11-02 21:06:39,597 INFO L226 Difference]: Without dead ends: 97 [2024-11-02 21:06:39,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:06:39,598 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:39,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 216 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 21:06:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-02 21:06:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-02 21:06:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 91 states have internal predecessors, (113), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-11-02 21:06:39,613 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 74 [2024-11-02 21:06:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:39,615 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-11-02 21:06:39,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-11-02 21:06:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:39,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:39,616 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:39,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 21:06:39,616 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:39,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2022113907, now seen corresponding path program 3 times [2024-11-02 21:06:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41752786] [2024-11-02 21:06:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:39,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-02 21:06:39,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 202 proven. 23 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-02 21:06:40,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 212 proven. 7 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-02 21:06:40,408 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:40,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41752786] [2024-11-02 21:06:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [41752786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:40,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-02 21:06:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890424231] [2024-11-02 21:06:40,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:40,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-02 21:06:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-02 21:06:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-02 21:06:40,409 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:06:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:40,896 INFO L93 Difference]: Finished difference Result 282 states and 360 transitions. [2024-11-02 21:06:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 21:06:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 108 [2024-11-02 21:06:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:40,897 INFO L225 Difference]: With dead ends: 282 [2024-11-02 21:06:40,897 INFO L226 Difference]: Without dead ends: 226 [2024-11-02 21:06:40,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-02 21:06:40,898 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:40,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 353 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 21:06:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-02 21:06:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 180. [2024-11-02 21:06:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.2471264367816093) internal successors, (217), 174 states have internal predecessors, (217), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2024-11-02 21:06:40,933 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 108 [2024-11-02 21:06:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:40,934 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2024-11-02 21:06:40,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:06:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2024-11-02 21:06:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:40,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:40,937 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:40,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 21:06:40,937 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:40,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 436276209, now seen corresponding path program 1 times [2024-11-02 21:06:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276416454] [2024-11-02 21:06:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:40,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:41,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-02 21:06:41,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-02 21:06:41,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-02 21:06:41,560 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276416454] [2024-11-02 21:06:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [276416454] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:41,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:41,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-02 21:06:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126478676] [2024-11-02 21:06:41,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:41,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-02 21:06:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-02 21:06:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-02 21:06:41,562 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:42,292 INFO L93 Difference]: Finished difference Result 371 states and 469 transitions. [2024-11-02 21:06:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-02 21:06:42,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:42,293 INFO L225 Difference]: With dead ends: 371 [2024-11-02 21:06:42,293 INFO L226 Difference]: Without dead ends: 221 [2024-11-02 21:06:42,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=859, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 21:06:42,295 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 92 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:42,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 359 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 21:06:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-02 21:06:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 202. [2024-11-02 21:06:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.260204081632653) internal successors, (247), 196 states have internal predecessors, (247), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 255 transitions. [2024-11-02 21:06:42,307 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 255 transitions. Word has length 108 [2024-11-02 21:06:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:42,307 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 255 transitions. [2024-11-02 21:06:42,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 255 transitions. [2024-11-02 21:06:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:42,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:42,308 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 14, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:42,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 21:06:42,308 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:42,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1734295817, now seen corresponding path program 2 times [2024-11-02 21:06:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:42,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096400670] [2024-11-02 21:06:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:42,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 21:06:42,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 174 proven. 220 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-02 21:06:43,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 306 proven. 77 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-02 21:06:43,317 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096400670] [2024-11-02 21:06:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1096400670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:43,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-02 21:06:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505909573] [2024-11-02 21:06:43,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-02 21:06:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-02 21:06:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-02 21:06:43,318 INFO L87 Difference]: Start difference. First operand 202 states and 255 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:47,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:06:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:48,625 INFO L93 Difference]: Finished difference Result 356 states and 454 transitions. [2024-11-02 21:06:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-02 21:06:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:48,627 INFO L225 Difference]: With dead ends: 356 [2024-11-02 21:06:48,628 INFO L226 Difference]: Without dead ends: 315 [2024-11-02 21:06:48,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=383, Invalid=1873, Unknown=0, NotChecked=0, Total=2256 [2024-11-02 21:06:48,629 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 61 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:48,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 456 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 631 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-02 21:06:48,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-02 21:06:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 268. [2024-11-02 21:06:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 262 states have internal predecessors, (331), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 339 transitions. [2024-11-02 21:06:48,651 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 339 transitions. Word has length 108 [2024-11-02 21:06:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:48,651 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 339 transitions. [2024-11-02 21:06:48,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 339 transitions. [2024-11-02 21:06:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:48,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:48,652 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:48,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 21:06:48,653 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:48,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1515441099, now seen corresponding path program 3 times [2024-11-02 21:06:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:48,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323226565] [2024-11-02 21:06:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:48,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-02 21:06:48,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-02 21:06:49,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-02 21:06:49,743 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323226565] [2024-11-02 21:06:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [323226565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:49,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2024-11-02 21:06:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117732345] [2024-11-02 21:06:49,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:49,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-02 21:06:49,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-02 21:06:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2024-11-02 21:06:49,745 INFO L87 Difference]: Start difference. First operand 268 states and 339 transitions. Second operand has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:50,154 INFO L93 Difference]: Finished difference Result 463 states and 587 transitions. [2024-11-02 21:06:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 21:06:50,154 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:50,156 INFO L225 Difference]: With dead ends: 463 [2024-11-02 21:06:50,156 INFO L226 Difference]: Without dead ends: 337 [2024-11-02 21:06:50,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2024-11-02 21:06:50,157 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:50,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 594 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 21:06:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-02 21:06:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 319. [2024-11-02 21:06:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 313 states have (on average 1.2651757188498403) internal successors, (396), 313 states have internal predecessors, (396), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 404 transitions. [2024-11-02 21:06:50,173 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 404 transitions. Word has length 108 [2024-11-02 21:06:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:50,174 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 404 transitions. [2024-11-02 21:06:50,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 404 transitions. [2024-11-02 21:06:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:50,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:50,175 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:50,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 21:06:50,175 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:50,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1693621067, now seen corresponding path program 4 times [2024-11-02 21:06:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381087838] [2024-11-02 21:06:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:50,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-02 21:06:50,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:50,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 21:06:50,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-11-02 21:06:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 171 proven. 126 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-02 21:06:50,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 184 proven. 113 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-02 21:06:51,153 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381087838] [2024-11-02 21:06:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [381087838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:51,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:51,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2024-11-02 21:06:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809136497] [2024-11-02 21:06:51,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:51,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-02 21:06:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-02 21:06:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2024-11-02 21:06:51,155 INFO L87 Difference]: Start difference. First operand 319 states and 404 transitions. Second operand has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:51,754 INFO L93 Difference]: Finished difference Result 693 states and 875 transitions. [2024-11-02 21:06:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-02 21:06:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:51,756 INFO L225 Difference]: With dead ends: 693 [2024-11-02 21:06:51,756 INFO L226 Difference]: Without dead ends: 581 [2024-11-02 21:06:51,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2024-11-02 21:06:51,758 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:51,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 486 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 21:06:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-02 21:06:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 566. [2024-11-02 21:06:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 560 states have (on average 1.2660714285714285) internal successors, (709), 560 states have internal predecessors, (709), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 717 transitions. [2024-11-02 21:06:51,795 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 717 transitions. Word has length 108 [2024-11-02 21:06:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:51,795 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 717 transitions. [2024-11-02 21:06:51,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 29 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 717 transitions. [2024-11-02 21:06:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:51,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:51,800 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:51,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 21:06:51,800 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:51,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1580277875, now seen corresponding path program 5 times [2024-11-02 21:06:51,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:51,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289066999] [2024-11-02 21:06:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:51,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:51,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-02 21:06:51,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 69 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-02 21:06:52,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:52,387 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-02 21:06:52,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-02 21:06:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 237 proven. 60 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-02 21:06:52,476 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289066999] [2024-11-02 21:06:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [289066999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:52,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:52,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2024-11-02 21:06:52,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30245708] [2024-11-02 21:06:52,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:52,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-02 21:06:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-02 21:06:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-02 21:06:52,477 INFO L87 Difference]: Start difference. First operand 566 states and 717 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:06:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:53,335 INFO L93 Difference]: Finished difference Result 1102 states and 1390 transitions. [2024-11-02 21:06:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-02 21:06:53,335 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 108 [2024-11-02 21:06:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:53,338 INFO L225 Difference]: With dead ends: 1102 [2024-11-02 21:06:53,338 INFO L226 Difference]: Without dead ends: 915 [2024-11-02 21:06:53,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2024-11-02 21:06:53,339 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:53,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 524 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 21:06:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2024-11-02 21:06:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 794. [2024-11-02 21:06:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.248730964467005) internal successors, (984), 788 states have internal predecessors, (984), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 992 transitions. [2024-11-02 21:06:53,409 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 992 transitions. Word has length 108 [2024-11-02 21:06:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:53,409 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 992 transitions. [2024-11-02 21:06:53,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:06:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 992 transitions. [2024-11-02 21:06:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:53,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:53,411 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:53,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 21:06:53,411 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:53,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1026811059, now seen corresponding path program 6 times [2024-11-02 21:06:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:53,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085969179] [2024-11-02 21:06:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:53,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-02 21:06:53,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 218 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-02 21:06:53,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 200 proven. 205 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-02 21:06:54,327 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085969179] [2024-11-02 21:06:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1085969179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:54,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-02 21:06:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187893551] [2024-11-02 21:06:54,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:54,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-02 21:06:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-02 21:06:54,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-02 21:06:54,328 INFO L87 Difference]: Start difference. First operand 794 states and 992 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:55,761 INFO L93 Difference]: Finished difference Result 1301 states and 1634 transitions. [2024-11-02 21:06:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-02 21:06:55,761 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:55,764 INFO L225 Difference]: With dead ends: 1301 [2024-11-02 21:06:55,764 INFO L226 Difference]: Without dead ends: 1035 [2024-11-02 21:06:55,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=424, Invalid=2546, Unknown=0, NotChecked=0, Total=2970 [2024-11-02 21:06:55,766 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 110 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:55,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 557 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 21:06:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-02 21:06:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 917. [2024-11-02 21:06:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 911 states have (on average 1.2546652030735455) internal successors, (1143), 911 states have internal predecessors, (1143), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1151 transitions. [2024-11-02 21:06:55,841 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1151 transitions. Word has length 108 [2024-11-02 21:06:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:55,841 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1151 transitions. [2024-11-02 21:06:55,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1151 transitions. [2024-11-02 21:06:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:55,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:55,843 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:55,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 21:06:55,843 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:55,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash 655076527, now seen corresponding path program 7 times [2024-11-02 21:06:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813270516] [2024-11-02 21:06:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:55,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-02 21:06:55,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-02 21:06:56,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:06:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-02 21:06:56,984 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:06:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813270516] [2024-11-02 21:06:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1813270516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:06:56,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:06:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-02 21:06:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972645094] [2024-11-02 21:06:56,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:06:56,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-02 21:06:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:06:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-02 21:06:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-02 21:06:56,985 INFO L87 Difference]: Start difference. First operand 917 states and 1151 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:06:59,480 INFO L93 Difference]: Finished difference Result 1312 states and 1655 transitions. [2024-11-02 21:06:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-02 21:06:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:06:59,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:06:59,483 INFO L225 Difference]: With dead ends: 1312 [2024-11-02 21:06:59,483 INFO L226 Difference]: Without dead ends: 976 [2024-11-02 21:06:59,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2024-11-02 21:06:59,484 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 113 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:06:59,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 440 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 21:06:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-11-02 21:06:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 949. [2024-11-02 21:06:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 943 states have (on average 1.2608695652173914) internal successors, (1189), 943 states have internal predecessors, (1189), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:06:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1197 transitions. [2024-11-02 21:06:59,561 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1197 transitions. Word has length 108 [2024-11-02 21:06:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:06:59,561 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1197 transitions. [2024-11-02 21:06:59,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:06:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1197 transitions. [2024-11-02 21:06:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:06:59,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:06:59,563 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:06:59,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 21:06:59,563 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:06:59,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:06:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash 778863597, now seen corresponding path program 8 times [2024-11-02 21:06:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:06:59,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281615871] [2024-11-02 21:06:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:06:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:06:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:06:59,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-02 21:06:59,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:06:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 202 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-02 21:06:59,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 202 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-02 21:07:00,097 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281615871] [2024-11-02 21:07:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [281615871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:00,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-02 21:07:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310420667] [2024-11-02 21:07:00,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:00,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-02 21:07:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:00,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-02 21:07:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-02 21:07:00,098 INFO L87 Difference]: Start difference. First operand 949 states and 1197 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:00,602 INFO L93 Difference]: Finished difference Result 1659 states and 2089 transitions. [2024-11-02 21:07:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-02 21:07:00,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:00,606 INFO L225 Difference]: With dead ends: 1659 [2024-11-02 21:07:00,606 INFO L226 Difference]: Without dead ends: 1323 [2024-11-02 21:07:00,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2024-11-02 21:07:00,607 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 114 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:00,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 390 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 21:07:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2024-11-02 21:07:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1065. [2024-11-02 21:07:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1059 states have (on average 1.2606232294617563) internal successors, (1335), 1059 states have internal predecessors, (1335), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:07:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1343 transitions. [2024-11-02 21:07:00,696 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1343 transitions. Word has length 108 [2024-11-02 21:07:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:00,696 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1343 transitions. [2024-11-02 21:07:00,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1343 transitions. [2024-11-02 21:07:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:00,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:00,698 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:00,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 21:07:00,698 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:00,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 819538347, now seen corresponding path program 9 times [2024-11-02 21:07:00,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:00,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293933492] [2024-11-02 21:07:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:00,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:00,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 21:07:00,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-02 21:07:01,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-02 21:07:01,376 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:01,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293933492] [2024-11-02 21:07:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [293933492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:01,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:01,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-02 21:07:01,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372223763] [2024-11-02 21:07:01,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:01,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-02 21:07:01,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-02 21:07:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-02 21:07:01,378 INFO L87 Difference]: Start difference. First operand 1065 states and 1343 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:01,710 INFO L93 Difference]: Finished difference Result 1326 states and 1672 transitions. [2024-11-02 21:07:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 21:07:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:01,714 INFO L225 Difference]: With dead ends: 1326 [2024-11-02 21:07:01,714 INFO L226 Difference]: Without dead ends: 1104 [2024-11-02 21:07:01,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-02 21:07:01,715 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 39 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:01,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 490 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 21:07:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2024-11-02 21:07:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1036. [2024-11-02 21:07:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1030 states have (on average 1.2572815533980584) internal successors, (1295), 1030 states have internal predecessors, (1295), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:07:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1303 transitions. [2024-11-02 21:07:01,803 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1303 transitions. Word has length 108 [2024-11-02 21:07:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:01,803 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1303 transitions. [2024-11-02 21:07:01,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1303 transitions. [2024-11-02 21:07:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:01,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:01,805 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:01,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 21:07:01,805 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:01,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash -917939467, now seen corresponding path program 10 times [2024-11-02 21:07:01,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:01,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129417321] [2024-11-02 21:07:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:01,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:01,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-02 21:07:01,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 92 proven. 335 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-02 21:07:02,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:02,495 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-02 21:07:02,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2024-11-02 21:07:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 253 proven. 156 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-02 21:07:02,577 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129417321] [2024-11-02 21:07:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1129417321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:02,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2024-11-02 21:07:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637516593] [2024-11-02 21:07:02,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:02,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-02 21:07:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-02 21:07:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-02 21:07:02,579 INFO L87 Difference]: Start difference. First operand 1036 states and 1303 transitions. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:04,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:04,234 INFO L93 Difference]: Finished difference Result 1551 states and 1951 transitions. [2024-11-02 21:07:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-02 21:07:04,235 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:04,238 INFO L225 Difference]: With dead ends: 1551 [2024-11-02 21:07:04,238 INFO L226 Difference]: Without dead ends: 1437 [2024-11-02 21:07:04,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=521, Invalid=4035, Unknown=0, NotChecked=0, Total=4556 [2024-11-02 21:07:04,240 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:04,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 565 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 21:07:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-02 21:07:04,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1258. [2024-11-02 21:07:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1252 states have (on average 1.2531948881789137) internal successors, (1569), 1252 states have internal predecessors, (1569), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:07:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1577 transitions. [2024-11-02 21:07:04,361 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1577 transitions. Word has length 108 [2024-11-02 21:07:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:04,361 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1577 transitions. [2024-11-02 21:07:04,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1577 transitions. [2024-11-02 21:07:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:04,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:04,363 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:04,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-02 21:07:04,363 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:04,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1939007821, now seen corresponding path program 11 times [2024-11-02 21:07:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542483546] [2024-11-02 21:07:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:04,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-02 21:07:04,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 92 proven. 317 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-02 21:07:04,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:04,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 21:07:04,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2024-11-02 21:07:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 92 proven. 317 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-02 21:07:05,098 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542483546] [2024-11-02 21:07:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1542483546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:05,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2024-11-02 21:07:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067740484] [2024-11-02 21:07:05,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:05,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-02 21:07:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-02 21:07:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-11-02 21:07:05,100 INFO L87 Difference]: Start difference. First operand 1258 states and 1577 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:05,739 INFO L93 Difference]: Finished difference Result 2085 states and 2628 transitions. [2024-11-02 21:07:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 21:07:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:05,744 INFO L225 Difference]: With dead ends: 2085 [2024-11-02 21:07:05,744 INFO L226 Difference]: Without dead ends: 1642 [2024-11-02 21:07:05,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-02 21:07:05,745 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 53 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:05,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 800 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 21:07:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-02 21:07:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1526. [2024-11-02 21:07:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1520 states have (on average 1.2769736842105264) internal successors, (1941), 1520 states have internal predecessors, (1941), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:07:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1949 transitions. [2024-11-02 21:07:05,880 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1949 transitions. Word has length 108 [2024-11-02 21:07:05,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:05,880 INFO L471 AbstractCegarLoop]: Abstraction has 1526 states and 1949 transitions. [2024-11-02 21:07:05,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1949 transitions. [2024-11-02 21:07:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:05,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:05,883 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:05,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-02 21:07:05,883 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:05,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1916375567, now seen corresponding path program 12 times [2024-11-02 21:07:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152768952] [2024-11-02 21:07:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:05,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-02 21:07:05,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:06,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 21:07:06,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2024-11-02 21:07:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 213 proven. 207 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-02 21:07:06,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 242 proven. 178 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-02 21:07:07,590 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152768952] [2024-11-02 21:07:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [152768952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:07,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:07,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2024-11-02 21:07:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498505848] [2024-11-02 21:07:07,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:07,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-02 21:07:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-02 21:07:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2024-11-02 21:07:07,591 INFO L87 Difference]: Start difference. First operand 1526 states and 1949 transitions. Second operand has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:09,052 INFO L93 Difference]: Finished difference Result 2562 states and 3261 transitions. [2024-11-02 21:07:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-02 21:07:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:09,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:09,058 INFO L225 Difference]: With dead ends: 2562 [2024-11-02 21:07:09,058 INFO L226 Difference]: Without dead ends: 2287 [2024-11-02 21:07:09,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=581, Invalid=2725, Unknown=0, NotChecked=0, Total=3306 [2024-11-02 21:07:09,059 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 143 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:09,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 628 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 21:07:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2024-11-02 21:07:09,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2109. [2024-11-02 21:07:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2109 states, 2103 states have (on average 1.2772230147408463) internal successors, (2686), 2103 states have internal predecessors, (2686), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 21:07:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2694 transitions. [2024-11-02 21:07:09,260 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2694 transitions. Word has length 108 [2024-11-02 21:07:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:09,261 INFO L471 AbstractCegarLoop]: Abstraction has 2109 states and 2694 transitions. [2024-11-02 21:07:09,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2694 transitions. [2024-11-02 21:07:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:09,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:09,263 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:09,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-02 21:07:09,263 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:09,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1984224943, now seen corresponding path program 13 times [2024-11-02 21:07:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392891346] [2024-11-02 21:07:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:09,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-02 21:07:09,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 243 proven. 63 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-02 21:07:10,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 259 proven. 103 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-02 21:07:11,111 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392891346] [2024-11-02 21:07:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1392891346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:11,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2024-11-02 21:07:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319299942] [2024-11-02 21:07:11,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:11,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-02 21:07:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-02 21:07:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 21:07:11,113 INFO L87 Difference]: Start difference. First operand 2109 states and 2694 transitions. Second operand has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:07:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:14,279 INFO L93 Difference]: Finished difference Result 3766 states and 4814 transitions. [2024-11-02 21:07:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-02 21:07:14,280 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 108 [2024-11-02 21:07:14,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:14,288 INFO L225 Difference]: With dead ends: 3766 [2024-11-02 21:07:14,288 INFO L226 Difference]: Without dead ends: 3236 [2024-11-02 21:07:14,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1058, Invalid=4948, Unknown=0, NotChecked=0, Total=6006 [2024-11-02 21:07:14,290 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 314 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:14,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 513 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 21:07:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2024-11-02 21:07:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2182. [2024-11-02 21:07:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2175 states have (on average 1.2832183908045978) internal successors, (2791), 2175 states have internal predecessors, (2791), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:07:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2803 transitions. [2024-11-02 21:07:14,538 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2803 transitions. Word has length 108 [2024-11-02 21:07:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:14,539 INFO L471 AbstractCegarLoop]: Abstraction has 2182 states and 2803 transitions. [2024-11-02 21:07:14,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.742857142857143) internal successors, (96), 35 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:07:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2803 transitions. [2024-11-02 21:07:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:14,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:14,541 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:14,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-02 21:07:14,541 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:14,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:14,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1947265775, now seen corresponding path program 14 times [2024-11-02 21:07:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:14,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481611869] [2024-11-02 21:07:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:14,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-02 21:07:14,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 160 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-02 21:07:15,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 257 proven. 149 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-02 21:07:16,208 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481611869] [2024-11-02 21:07:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1481611869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:16,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2024-11-02 21:07:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131501399] [2024-11-02 21:07:16,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-02 21:07:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-02 21:07:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 21:07:16,210 INFO L87 Difference]: Start difference. First operand 2182 states and 2803 transitions. Second operand has 35 states, 35 states have (on average 3.142857142857143) internal successors, (110), 35 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:07:54,712 INFO L93 Difference]: Finished difference Result 2735 states and 3516 transitions. [2024-11-02 21:07:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-02 21:07:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.142857142857143) internal successors, (110), 35 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-02 21:07:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:07:54,718 INFO L225 Difference]: With dead ends: 2735 [2024-11-02 21:07:54,718 INFO L226 Difference]: Without dead ends: 2427 [2024-11-02 21:07:54,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=827, Invalid=4420, Unknown=9, NotChecked=0, Total=5256 [2024-11-02 21:07:54,720 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 154 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 21:07:54,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 618 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 21:07:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2024-11-02 21:07:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2239. [2024-11-02 21:07:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2232 states have (on average 1.2853942652329748) internal successors, (2869), 2232 states have internal predecessors, (2869), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:07:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2881 transitions. [2024-11-02 21:07:54,957 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2881 transitions. Word has length 108 [2024-11-02 21:07:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:07:54,957 INFO L471 AbstractCegarLoop]: Abstraction has 2239 states and 2881 transitions. [2024-11-02 21:07:54,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.142857142857143) internal successors, (110), 35 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 21:07:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2881 transitions. [2024-11-02 21:07:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:07:54,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:07:54,960 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:07:54,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-02 21:07:54,960 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:07:54,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:07:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1399019725, now seen corresponding path program 15 times [2024-11-02 21:07:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:07:54,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226043183] [2024-11-02 21:07:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:07:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:07:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:07:55,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-02 21:07:55,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:07:56,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 21:07:56,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-02 21:07:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 175 proven. 271 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-02 21:07:56,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:07:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 153 proven. 259 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-02 21:07:57,475 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:07:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226043183] [2024-11-02 21:07:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1226043183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:07:57,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:07:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 39 [2024-11-02 21:07:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72134952] [2024-11-02 21:07:57,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:07:57,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-02 21:07:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:07:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-02 21:07:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2024-11-02 21:07:57,477 INFO L87 Difference]: Start difference. First operand 2239 states and 2881 transitions. Second operand has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:08:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:08:02,415 INFO L93 Difference]: Finished difference Result 4991 states and 6392 transitions. [2024-11-02 21:08:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-02 21:08:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 108 [2024-11-02 21:08:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:08:02,425 INFO L225 Difference]: With dead ends: 4991 [2024-11-02 21:08:02,425 INFO L226 Difference]: Without dead ends: 4423 [2024-11-02 21:08:02,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3133 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1723, Invalid=8579, Unknown=0, NotChecked=0, Total=10302 [2024-11-02 21:08:02,428 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 148 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:08:02,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 701 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-02 21:08:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2024-11-02 21:08:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 3786. [2024-11-02 21:08:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3786 states, 3779 states have (on average 1.2791743847578725) internal successors, (4834), 3779 states have internal predecessors, (4834), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 21:08:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 4846 transitions. [2024-11-02 21:08:02,899 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 4846 transitions. Word has length 108 [2024-11-02 21:08:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:08:02,899 INFO L471 AbstractCegarLoop]: Abstraction has 3786 states and 4846 transitions. [2024-11-02 21:08:02,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-02 21:08:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 4846 transitions. [2024-11-02 21:08:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 21:08:02,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:08:02,903 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:08:02,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-02 21:08:02,903 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:08:02,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:08:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1575531243, now seen corresponding path program 16 times [2024-11-02 21:08:02,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:08:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250745652] [2024-11-02 21:08:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:08:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 21:08:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:08:02,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-02 21:08:02,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:08:04,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 21:08:04,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2024-11-02 21:08:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 190 proven. 226 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-02 21:08:04,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:08:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 197 proven. 219 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-02 21:08:06,265 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:08:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250745652] [2024-11-02 21:08:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250745652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:08:06,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:08:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2024-11-02 21:08:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439228666] [2024-11-02 21:08:06,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:08:06,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-02 21:08:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:08:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-02 21:08:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 21:08:06,266 INFO L87 Difference]: Start difference. First operand 3786 states and 4846 transitions. Second operand has 36 states, 36 states have (on average 3.4722222222222223) internal successors, (125), 36 states have internal predecessors, (125), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)