/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/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 19:56:34,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 19:56:34,655 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 19:56:34,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 19:56:34,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 19:56:34,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 19:56:34,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 19:56:34,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 19:56:34,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 19:56:34,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 19:56:34,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 19:56:34,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 19:56:34,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 19:56:34,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 19:56:34,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 19:56:34,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 19:56:34,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 19:56:34,694 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 19:56:34,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 19:56:34,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 19:56:34,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 19:56:34,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 19:56:34,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 19:56:34,697 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 19:56:34,697 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 19:56:34,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 19:56:34,697 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 19:56:34,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 19:56:34,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 19:56:34,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 19:56:34,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 19:56:34,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 19:56:34,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 19:56:34,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 19:56:34,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 19:56:34,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 19:56:34,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 19:56:34,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 19:56:34,700 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 19:56:34,701 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 19:56:34,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 19:56:34,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 19:56:34,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 19:56:34,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 19:56:34,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-02 19:56:34,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 19:56:34,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 19:56:34,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 19:56:34,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 19:56:34,949 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 19:56:34,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2024-11-02 19:56:36,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 19:56:36,618 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 19:56:36,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2024-11-02 19:56:36,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7544cfe8/900512a0210d411f814d07250b2d4106/FLAG481e27b59 [2024-11-02 19:56:36,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7544cfe8/900512a0210d411f814d07250b2d4106 [2024-11-02 19:56:36,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 19:56:36,645 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 19:56:36,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 19:56:36,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 19:56:36,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 19:56:36,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:36" (1/1) ... [2024-11-02 19:56:36,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365e2f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:36, skipping insertion in model container [2024-11-02 19:56:36,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:36" (1/1) ... [2024-11-02 19:56:36,683 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 19:56:36,876 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-02 19:56:36,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 19:56:36,957 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 19:56:36,970 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c[728,741] [2024-11-02 19:56:37,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 19:56:37,023 INFO L204 MainTranslator]: Completed translation [2024-11-02 19:56:37,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37 WrapperNode [2024-11-02 19:56:37,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 19:56:37,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 19:56:37,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 19:56:37,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 19:56:37,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,062 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2024-11-02 19:56:37,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 19:56:37,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 19:56:37,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 19:56:37,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 19:56:37,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,097 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 19:56:37,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 19:56:37,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 19:56:37,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 19:56:37,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 19:56:37,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (1/1) ... [2024-11-02 19:56:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 19:56:37,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 19:56:37,158 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 19:56:37,170 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 19:56:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 19:56:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 19:56:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-02 19:56:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-02 19:56:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 19:56:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 19:56:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 19:56:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 19:56:37,295 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 19:56:37,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 19:56:37,632 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-02 19:56:37,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 19:56:37,648 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 19:56:37,648 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 19:56:37,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:37 BoogieIcfgContainer [2024-11-02 19:56:37,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 19:56:37,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 19:56:37,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 19:56:37,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 19:56:37,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:56:36" (1/3) ... [2024-11-02 19:56:37,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c66b4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:37, skipping insertion in model container [2024-11-02 19:56:37,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:37" (2/3) ... [2024-11-02 19:56:37,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c66b4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:37, skipping insertion in model container [2024-11-02 19:56:37,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:37" (3/3) ... [2024-11-02 19:56:37,659 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2024-11-02 19:56:37,676 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 19:56:37,676 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 19:56:37,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 19:56:37,746 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;@5596e91b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 19:56:37,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 19:56:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 19:56:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 19:56:37,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:37,761 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-02 19:56:37,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:37,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1428146956, now seen corresponding path program 1 times [2024-11-02 19:56:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:37,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843124946] [2024-11-02 19:56:37,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:37,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 19:56:37,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 19:56:38,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 19:56:38,134 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843124946] [2024-11-02 19:56:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [843124946] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 19:56:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55934213] [2024-11-02 19:56:38,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:38,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:56:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:56:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 19:56:38,184 INFO L87 Difference]: Start difference. First operand has 52 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:38,306 INFO L93 Difference]: Finished difference Result 115 states and 181 transitions. [2024-11-02 19:56:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 19:56:38,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-11-02 19:56:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:38,315 INFO L225 Difference]: With dead ends: 115 [2024-11-02 19:56:38,315 INFO L226 Difference]: Without dead ends: 60 [2024-11-02 19:56:38,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-02 19:56:38,321 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:38,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-02 19:56:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2024-11-02 19:56:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 19:56:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2024-11-02 19:56:38,356 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2024-11-02 19:56:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:38,356 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2024-11-02 19:56:38,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2024-11-02 19:56:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 19:56:38,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:38,359 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-02 19:56:38,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 19:56:38,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:38,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash -649725496, now seen corresponding path program 1 times [2024-11-02 19:56:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645445600] [2024-11-02 19:56:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:38,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 19:56:38,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 19:56:38,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 19:56:38,663 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:38,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645445600] [2024-11-02 19:56:38,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645445600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:56:38,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:56:38,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2024-11-02 19:56:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939847721] [2024-11-02 19:56:38,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:56:38,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 19:56:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 19:56:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 19:56:38,667 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:38,738 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2024-11-02 19:56:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 19:56:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2024-11-02 19:56:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:38,740 INFO L225 Difference]: With dead ends: 74 [2024-11-02 19:56:38,741 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 19:56:38,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 19:56:38,744 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 48 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:38,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 241 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 19:56:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-02 19:56:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 19:56:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-02 19:56:38,753 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 45 [2024-11-02 19:56:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:38,754 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-02 19:56:38,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-02 19:56:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 19:56:38,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:38,756 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:38,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 19:56:38,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:38,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2040676328, now seen corresponding path program 1 times [2024-11-02 19:56:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761051201] [2024-11-02 19:56:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:38,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 19:56:38,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 19:56:38,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 19:56:38,991 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761051201] [2024-11-02 19:56:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [761051201] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-02 19:56:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327042663] [2024-11-02 19:56:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:38,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 19:56:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 19:56:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:38,993 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:39,009 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2024-11-02 19:56:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 19:56:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-02 19:56:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:39,011 INFO L225 Difference]: With dead ends: 72 [2024-11-02 19:56:39,011 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 19:56:39,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:39,012 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:39,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 181 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 19:56:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 19:56:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 19:56:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2024-11-02 19:56:39,026 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 49 [2024-11-02 19:56:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:39,026 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2024-11-02 19:56:39,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2024-11-02 19:56:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 19:56:39,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:39,030 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:39,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 19:56:39,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:39,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:39,031 INFO L85 PathProgramCache]: Analyzing trace with hash 760812650, now seen corresponding path program 1 times [2024-11-02 19:56:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112349959] [2024-11-02 19:56:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:39,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 19:56:39,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 19:56:39,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 19:56:39,237 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112349959] [2024-11-02 19:56:39,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112349959] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:39,238 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:39,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2024-11-02 19:56:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210590318] [2024-11-02 19:56:39,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:39,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 19:56:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 19:56:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:39,240 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:39,314 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2024-11-02 19:56:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 19:56:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-02 19:56:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:39,316 INFO L225 Difference]: With dead ends: 79 [2024-11-02 19:56:39,316 INFO L226 Difference]: Without dead ends: 61 [2024-11-02 19:56:39,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:39,317 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:39,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 315 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-02 19:56:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-02 19:56:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-02 19:56:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-11-02 19:56:39,325 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 49 [2024-11-02 19:56:39,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:39,325 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-11-02 19:56:39,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,325 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-11-02 19:56:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 19:56:39,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:39,327 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:39,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 19:56:39,327 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:39,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1018978088, now seen corresponding path program 1 times [2024-11-02 19:56:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558813791] [2024-11-02 19:56:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:39,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 19:56:39,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 19:56:39,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 19:56:39,503 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558813791] [2024-11-02 19:56:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [558813791] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 19:56:39,503 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 19:56:39,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-02 19:56:39,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760490612] [2024-11-02 19:56:39,504 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:39,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 19:56:39,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 19:56:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:39,506 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:39,586 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-11-02 19:56:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 19:56:39,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-02 19:56:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:39,588 INFO L225 Difference]: With dead ends: 72 [2024-11-02 19:56:39,588 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 19:56:39,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:39,590 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:39,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 316 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 19:56:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-02 19:56:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 57 states have internal predecessors, (71), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-02 19:56:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2024-11-02 19:56:39,601 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 49 [2024-11-02 19:56:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:39,601 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2024-11-02 19:56:39,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,602 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2024-11-02 19:56:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-02 19:56:39,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:39,603 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:39,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 19:56:39,603 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:39,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1076236390, now seen corresponding path program 1 times [2024-11-02 19:56:39,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:39,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311480867] [2024-11-02 19:56:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:39,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:39,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 19:56:39,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 19:56:39,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 19:56:39,797 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311480867] [2024-11-02 19:56:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1311480867] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 19:56:39,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 19:56:39,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-02 19:56:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027492533] [2024-11-02 19:56:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 19:56:39,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 19:56:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 19:56:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-02 19:56:39,799 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:39,834 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-02 19:56:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 19:56:39,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-02 19:56:39,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:39,836 INFO L225 Difference]: With dead ends: 72 [2024-11-02 19:56:39,836 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 19:56:39,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-02 19:56:39,837 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 294 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 19:56:39,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 294 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:39,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 19:56:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-02 19:56:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 19:56:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-02 19:56:39,844 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 49 [2024-11-02 19:56:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:39,844 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-02 19:56:39,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 19:56:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-02 19:56:39,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 19:56:39,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:39,846 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:39,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 19:56:39,846 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:39,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash -493123304, now seen corresponding path program 1 times [2024-11-02 19:56:39,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:39,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956117706] [2024-11-02 19:56:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:39,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:39,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 19:56:39,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-02 19:56:40,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-02 19:56:40,079 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:40,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956117706] [2024-11-02 19:56:40,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [956117706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:56:40,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:56:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-02 19:56:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018113740] [2024-11-02 19:56:40,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:56:40,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 19:56:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 19:56:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-02 19:56:40,081 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:40,151 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2024-11-02 19:56:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 19:56:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-02 19:56:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:40,154 INFO L225 Difference]: With dead ends: 81 [2024-11-02 19:56:40,154 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 19:56:40,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-02 19:56:40,156 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:40,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 367 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 19:56:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 19:56:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-02 19:56:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-02 19:56:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2024-11-02 19:56:40,165 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 54 [2024-11-02 19:56:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:40,165 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2024-11-02 19:56:40,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 19:56:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2024-11-02 19:56:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-02 19:56:40,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 19:56:40,166 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 19:56:40,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 19:56:40,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 19:56:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 973238989, now seen corresponding path program 2 times [2024-11-02 19:56:40,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 19:56:40,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200489753] [2024-11-02 19:56:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 19:56:40,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 19:56:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 19:56:40,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-02 19:56:40,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 19:56:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 19:56:40,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 19:56:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 19:56:40,681 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 19:56:40,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200489753] [2024-11-02 19:56:40,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [200489753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 19:56:40,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 19:56:40,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2024-11-02 19:56:40,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172910022] [2024-11-02 19:56:40,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 19:56:40,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 19:56:40,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 19:56:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 19:56:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-02 19:56:40,683 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 19:56:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 19:56:40,755 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-02 19:56:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 19:56:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2024-11-02 19:56:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 19:56:40,757 INFO L225 Difference]: With dead ends: 55 [2024-11-02 19:56:40,757 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 19:56:40,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-02 19:56:40,758 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 19:56:40,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 199 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 19:56:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 19:56:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 19:56:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 19:56:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 19:56:40,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2024-11-02 19:56:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 19:56:40,760 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 19:56:40,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 19:56:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 19:56:40,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 19:56:40,765 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 19:56:40,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 19:56:40,771 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-02 19:56:40,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 19:56:40,815 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 19:56:40,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:56:40 BoogieIcfgContainer [2024-11-02 19:56:40,835 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 19:56:40,836 INFO L158 Benchmark]: Toolchain (without parser) took 4190.62ms. Allocated memory is still 362.8MB. Free memory was 313.7MB in the beginning and 226.8MB in the end (delta: 86.9MB). Peak memory consumption was 87.8MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,836 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 190.8MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-02 19:56:40,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.56ms. Allocated memory is still 362.8MB. Free memory was 313.3MB in the beginning and 297.9MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.63ms. Allocated memory is still 362.8MB. Free memory was 297.5MB in the beginning and 295.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,837 INFO L158 Benchmark]: Boogie Preprocessor took 51.77ms. Allocated memory is still 362.8MB. Free memory was 295.9MB in the beginning and 293.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,837 INFO L158 Benchmark]: RCFGBuilder took 532.57ms. Allocated memory is still 362.8MB. Free memory was 293.8MB in the beginning and 276.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,837 INFO L158 Benchmark]: TraceAbstraction took 3182.82ms. Allocated memory is still 362.8MB. Free memory was 275.3MB in the beginning and 226.8MB in the end (delta: 48.5MB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. [2024-11-02 19:56:40,838 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 190.8MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 378.56ms. Allocated memory is still 362.8MB. Free memory was 313.3MB in the beginning and 297.9MB in the end (delta: 15.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.63ms. Allocated memory is still 362.8MB. Free memory was 297.5MB in the beginning and 295.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.77ms. Allocated memory is still 362.8MB. Free memory was 295.9MB in the beginning and 293.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 532.57ms. Allocated memory is still 362.8MB. Free memory was 293.8MB in the beginning and 276.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3182.82ms. Allocated memory is still 362.8MB. Free memory was 275.3MB in the beginning and 226.8MB in the end (delta: 48.5MB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 2079 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1645 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 306 IncrementalHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 434 mSDtfsCounter, 306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 721 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=5, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 774 ConstructedInterpolants, 0 QuantifiedInterpolants, 1128 SizeOfPredicates, 13 NumberOfNonLiveVariables, 736 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 428/494 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (0 != \old(m)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0 != \old(m)) - ProcedureContractResult [Line: 24]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((0 != m) || (0 == \result)) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (0 != cond) Ensures: (0 != cond) RESULT: Ultimate proved your program to be correct! [2024-11-02 19:56:40,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...