/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 External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 19:33:08,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 19:33:08,410 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 19:33:08,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 19:33:08,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 19:33:08,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 19:33:08,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 19:33:08,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 19:33:08,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 19:33:08,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 19:33:08,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 19:33:08,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 19:33:08,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 19:33:08,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 19:33:08,455 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 19:33:08,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 19:33:08,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 19:33:08,456 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 19:33:08,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 19:33:08,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 19:33:08,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 19:33:08,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 19:33:08,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 19:33:08,458 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 19:33:08,458 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 19:33:08,459 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 19:33:08,459 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 19:33:08,459 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 19:33:08,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 19:33:08,460 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 19:33:08,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 19:33:08,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 19:33:08,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 19:33:08,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 19:33:08,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 19:33:08,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 19:33:08,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 19:33:08,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 19:33:08,463 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 19:33:08,463 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:08,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 19:33:08,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 19:33:08,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 19:33:08,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 19:33:08,464 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 19:33:08,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:08,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 19:33:08,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 19:33:08,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 19:33:08,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 19:33:08,780 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 19:33:08,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2024-10-31 19:33:10,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 19:33:10,382 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 19:33:10,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2024-10-31 19:33:10,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e6f244c/1e0aed2455e34ec0b146354808649618/FLAG5606b6291 [2024-10-31 19:33:10,415 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e6f244c/1e0aed2455e34ec0b146354808649618 [2024-10-31 19:33:10,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 19:33:10,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 19:33:10,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 19:33:10,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 19:33:10,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 19:33:10,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68acbe14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10, skipping insertion in model container [2024-10-31 19:33:10,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 19:33:10,617 WARN L251 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_4-3a.c.cil.c[730,743] [2024-10-31 19:33:10,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 19:33:10,701 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 19:33:10,714 WARN L251 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_4-3a.c.cil.c[730,743] [2024-10-31 19:33:10,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 19:33:10,755 INFO L204 MainTranslator]: Completed translation [2024-10-31 19:33:10,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10 WrapperNode [2024-10-31 19:33:10,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 19:33:10,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 19:33:10,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 19:33:10,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 19:33:10,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,794 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-10-31 19:33:10,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 19:33:10,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 19:33:10,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 19:33:10,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 19:33:10,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,837 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]. [2024-10-31 19:33:10,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 19:33:10,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 19:33:10,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 19:33:10,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 19:33:10,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (1/1) ... [2024-10-31 19:33:10,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 19:33:10,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 19:33:10,903 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) [2024-10-31 19:33:10,909 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 [2024-10-31 19:33:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 19:33:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 19:33:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-31 19:33:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-31 19:33:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 19:33:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 19:33:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-31 19:33:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-31 19:33:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 19:33:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 19:33:11,033 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 19:33:11,036 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 19:33:11,319 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-10-31 19:33:11,320 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 19:33:11,337 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 19:33:11,338 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 19:33:11,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:33:11 BoogieIcfgContainer [2024-10-31 19:33:11,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 19:33:11,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 19:33:11,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 19:33:11,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 19:33:11,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 07:33:10" (1/3) ... [2024-10-31 19:33:11,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:33:11, skipping insertion in model container [2024-10-31 19:33:11,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:10" (2/3) ... [2024-10-31 19:33:11,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3625b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:33:11, skipping insertion in model container [2024-10-31 19:33:11,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:33:11" (3/3) ... [2024-10-31 19:33:11,348 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2024-10-31 19:33:11,364 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 19:33:11,365 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 19:33:11,430 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 19:33:11,436 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;@1fb51f10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 19:33:11,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 19:33:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 19:33:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 19:33:11,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:11,449 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 19:33:11,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:11,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 173410466, now seen corresponding path program 1 times [2024-10-31 19:33:11,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754428757] [2024-10-31 19:33:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:11,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:11,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-10-31 19:33:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:11,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 19:33:11,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:11,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:11,866 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754428757] [2024-10-31 19:33:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [754428757] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 19:33:11,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 19:33:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-10-31 19:33:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496997359] [2024-10-31 19:33:11,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 19:33:11,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 19:33:11,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 19:33:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:11,898 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 19:33:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:12,076 INFO L93 Difference]: Finished difference Result 128 states and 197 transitions. [2024-10-31 19:33:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 19:33:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-10-31 19:33:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:12,090 INFO L225 Difference]: With dead ends: 128 [2024-10-31 19:33:12,090 INFO L226 Difference]: Without dead ends: 71 [2024-10-31 19:33:12,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-31 19:33:12,100 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 15 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:12,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 510 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-31 19:33:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-10-31 19:33:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.326086956521739) internal successors, (61), 48 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-10-31 19:33:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-10-31 19:33:12,148 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2024-10-31 19:33:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:12,149 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-10-31 19:33:12,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 19:33:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-10-31 19:33:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-31 19:33:12,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:12,151 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1] [2024-10-31 19:33:12,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-10-31 19:33:12,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:12,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:12,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash -843557043, now seen corresponding path program 1 times [2024-10-31 19:33:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:12,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222932907] [2024-10-31 19:33:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:12,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:12,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-10-31 19:33:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:12,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 19:33:12,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:12,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:12,610 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222932907] [2024-10-31 19:33:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [222932907] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 19:33:12,611 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 19:33:12,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2024-10-31 19:33:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876308118] [2024-10-31 19:33:12,611 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 19:33:12,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 19:33:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 19:33:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 19:33:12,617 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-31 19:33:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:12,716 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-10-31 19:33:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 19:33:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-10-31 19:33:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:12,718 INFO L225 Difference]: With dead ends: 118 [2024-10-31 19:33:12,718 INFO L226 Difference]: Without dead ends: 86 [2024-10-31 19:33:12,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:12,720 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:12,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 426 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-31 19:33:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2024-10-31 19:33:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 54 states have internal predecessors, (67), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-10-31 19:33:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-10-31 19:33:12,736 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 35 [2024-10-31 19:33:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:12,737 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-10-31 19:33:12,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-31 19:33:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-10-31 19:33:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 19:33:12,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:12,738 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2024-10-31 19:33:12,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-10-31 19:33:12,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:12,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:12,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1508244029, now seen corresponding path program 1 times [2024-10-31 19:33:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44943653] [2024-10-31 19:33:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:12,941 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:12,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:12,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-10-31 19:33:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:13,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 19:33:13,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:13,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 19:33:13,181 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44943653] [2024-10-31 19:33:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [44943653] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 19:33:13,181 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 19:33:13,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2024-10-31 19:33:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746215428] [2024-10-31 19:33:13,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 19:33:13,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 19:33:13,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 19:33:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:13,184 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-31 19:33:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:13,305 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2024-10-31 19:33:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 19:33:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-10-31 19:33:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:13,307 INFO L225 Difference]: With dead ends: 108 [2024-10-31 19:33:13,307 INFO L226 Difference]: Without dead ends: 85 [2024-10-31 19:33:13,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-31 19:33:13,309 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:13,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 509 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-31 19:33:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2024-10-31 19:33:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 60 states have internal predecessors, (74), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-10-31 19:33:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2024-10-31 19:33:13,319 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 39 [2024-10-31 19:33:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:13,320 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2024-10-31 19:33:13,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-31 19:33:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2024-10-31 19:33:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 19:33:13,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:13,322 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-10-31 19:33:13,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-10-31 19:33:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:13,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -54729342, now seen corresponding path program 2 times [2024-10-31 19:33:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093576163] [2024-10-31 19:33:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:13,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:13,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:13,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-10-31 19:33:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:13,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 19:33:13,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 19:33:13,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-31 19:33:13,877 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:13,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093576163] [2024-10-31 19:33:13,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2093576163] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 19:33:13,878 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 19:33:13,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-10-31 19:33:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604175039] [2024-10-31 19:33:13,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 19:33:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 19:33:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 19:33:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-31 19:33:13,880 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-31 19:33:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:14,750 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-10-31 19:33:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 19:33:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-10-31 19:33:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:14,753 INFO L225 Difference]: With dead ends: 88 [2024-10-31 19:33:14,753 INFO L226 Difference]: Without dead ends: 86 [2024-10-31 19:33:14,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-31 19:33:14,755 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 6 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:14,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 369 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 19:33:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-31 19:33:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2024-10-31 19:33:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 63 states have internal predecessors, (77), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-10-31 19:33:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2024-10-31 19:33:14,774 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 39 [2024-10-31 19:33:14,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:14,774 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2024-10-31 19:33:14,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-31 19:33:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2024-10-31 19:33:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-31 19:33:14,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:14,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-10-31 19:33:14,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-10-31 19:33:14,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:14,978 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:14,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1136903568, now seen corresponding path program 1 times [2024-10-31 19:33:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497811460] [2024-10-31 19:33:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:14,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:14,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:14,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:14,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-10-31 19:33:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:15,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 19:33:15,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 19:33:15,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 19:33:15,234 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:15,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497811460] [2024-10-31 19:33:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [497811460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 19:33:15,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 19:33:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2024-10-31 19:33:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718194904] [2024-10-31 19:33:15,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 19:33:15,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 19:33:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 19:33:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:15,238 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 19:33:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:15,346 INFO L93 Difference]: Finished difference Result 117 states and 150 transitions. [2024-10-31 19:33:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 19:33:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-10-31 19:33:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:15,348 INFO L225 Difference]: With dead ends: 117 [2024-10-31 19:33:15,348 INFO L226 Difference]: Without dead ends: 106 [2024-10-31 19:33:15,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:15,350 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 28 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:15,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 380 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-31 19:33:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2024-10-31 19:33:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 74 states have internal predecessors, (87), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (22), 15 states have call predecessors, (22), 15 states have call successors, (22) [2024-10-31 19:33:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2024-10-31 19:33:15,365 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 44 [2024-10-31 19:33:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:15,366 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2024-10-31 19:33:15,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 19:33:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2024-10-31 19:33:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-31 19:33:15,368 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:15,368 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 19:33:15,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-10-31 19:33:15,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:15,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:15,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1837968146, now seen corresponding path program 1 times [2024-10-31 19:33:15,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:15,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437152555] [2024-10-31 19:33:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:15,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:15,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:15,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-10-31 19:33:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:15,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 19:33:15,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 19:33:15,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 19:33:15,932 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437152555] [2024-10-31 19:33:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [437152555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 19:33:15,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 19:33:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2024-10-31 19:33:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032751812] [2024-10-31 19:33:15,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 19:33:15,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 19:33:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 19:33:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-31 19:33:15,935 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 19:33:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:16,208 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2024-10-31 19:33:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 19:33:16,209 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2024-10-31 19:33:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:16,211 INFO L225 Difference]: With dead ends: 135 [2024-10-31 19:33:16,211 INFO L226 Difference]: Without dead ends: 128 [2024-10-31 19:33:16,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-10-31 19:33:16,212 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 22 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:16,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 654 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 19:33:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-31 19:33:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 115. [2024-10-31 19:33:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 87 states have internal predecessors, (100), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (31), 20 states have call predecessors, (31), 19 states have call successors, (31) [2024-10-31 19:33:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 151 transitions. [2024-10-31 19:33:16,234 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 151 transitions. Word has length 44 [2024-10-31 19:33:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:16,234 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 151 transitions. [2024-10-31 19:33:16,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 19:33:16,235 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 151 transitions. [2024-10-31 19:33:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-31 19:33:16,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:16,236 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-10-31 19:33:16,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-10-31 19:33:16,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:16,437 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:16,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1365970097, now seen corresponding path program 1 times [2024-10-31 19:33:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:16,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458500334] [2024-10-31 19:33:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:16,438 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:16,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:16,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-10-31 19:33:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:16,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 19:33:16,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 19:33:16,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 19:33:16,649 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458500334] [2024-10-31 19:33:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1458500334] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 19:33:16,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 19:33:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2024-10-31 19:33:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108139459] [2024-10-31 19:33:16,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 19:33:16,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 19:33:16,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 19:33:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 19:33:16,651 INFO L87 Difference]: Start difference. First operand 115 states and 151 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 19:33:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:16,770 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2024-10-31 19:33:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 19:33:16,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-10-31 19:33:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:16,773 INFO L225 Difference]: With dead ends: 167 [2024-10-31 19:33:16,773 INFO L226 Difference]: Without dead ends: 130 [2024-10-31 19:33:16,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-31 19:33:16,774 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 13 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:16,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 390 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-10-31 19:33:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2024-10-31 19:33:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 79 states have internal predecessors, (92), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2024-10-31 19:33:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2024-10-31 19:33:16,798 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 49 [2024-10-31 19:33:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:16,799 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2024-10-31 19:33:16,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 19:33:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2024-10-31 19:33:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-31 19:33:16,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:16,800 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-31 19:33:16,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-10-31 19:33:17,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:17,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:17,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2111348749, now seen corresponding path program 1 times [2024-10-31 19:33:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612788293] [2024-10-31 19:33:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:17,003 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:17,005 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:17,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-10-31 19:33:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:33:17,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 19:33:17,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:33:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 19:33:17,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:33:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 19:33:17,338 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:33:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612788293] [2024-10-31 19:33:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [612788293] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 19:33:17,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 19:33:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-31 19:33:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454650217] [2024-10-31 19:33:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 19:33:17,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 19:33:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:33:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 19:33:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-31 19:33:17,340 INFO L87 Difference]: Start difference. First operand 103 states and 131 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 19:33:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:33:17,527 INFO L93 Difference]: Finished difference Result 168 states and 220 transitions. [2024-10-31 19:33:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 19:33:17,528 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-10-31 19:33:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:33:17,529 INFO L225 Difference]: With dead ends: 168 [2024-10-31 19:33:17,529 INFO L226 Difference]: Without dead ends: 140 [2024-10-31 19:33:17,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-10-31 19:33:17,531 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 31 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:33:17,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 480 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 19:33:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-31 19:33:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2024-10-31 19:33:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 103 states have internal predecessors, (121), 23 states have call successors, (23), 8 states have call predecessors, (23), 14 states have return successors, (33), 23 states have call predecessors, (33), 22 states have call successors, (33) [2024-10-31 19:33:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2024-10-31 19:33:17,561 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 49 [2024-10-31 19:33:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:33:17,563 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2024-10-31 19:33:17,563 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 19:33:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2024-10-31 19:33:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-31 19:33:17,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:33:17,564 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 19:33:17,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-10-31 19:33:17,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:17,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:33:17,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:33:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1849173563, now seen corresponding path program 1 times [2024-10-31 19:33:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:33:17,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516050936] [2024-10-31 19:33:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:33:17,766 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:33:17,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:33:17,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-10-31 19:33:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 19:33:17,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 19:33:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 19:33:17,969 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-10-31 19:33:17,969 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 19:33:17,970 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 19:33:17,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-10-31 19:33:18,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:33:18,175 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 19:33:18,204 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 19:33:18,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 07:33:18 BoogieIcfgContainer [2024-10-31 19:33:18,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 19:33:18,207 INFO L158 Benchmark]: Toolchain (without parser) took 7787.28ms. Allocated memory was 207.6MB in the beginning and 283.1MB in the end (delta: 75.5MB). Free memory was 172.2MB in the beginning and 244.9MB in the end (delta: -72.7MB). Peak memory consumption was 3.8MB. Max. memory is 8.0GB. [2024-10-31 19:33:18,207 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 207.6MB. Free memory is still 184.4MB. There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 19:33:18,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.70ms. Allocated memory is still 207.6MB. Free memory was 172.2MB in the beginning and 156.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-10-31 19:33:18,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.61ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 19:33:18,208 INFO L158 Benchmark]: Boogie Preprocessor took 68.23ms. Allocated memory is still 207.6MB. Free memory was 154.9MB in the beginning and 152.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 19:33:18,208 INFO L158 Benchmark]: RCFGBuilder took 475.10ms. Allocated memory is still 207.6MB. Free memory was 152.8MB in the beginning and 137.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-10-31 19:33:18,209 INFO L158 Benchmark]: TraceAbstraction took 6864.75ms. Allocated memory was 207.6MB in the beginning and 283.1MB in the end (delta: 75.5MB). Free memory was 136.0MB in the beginning and 244.9MB in the end (delta: -108.9MB). There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 19:33:18,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 207.6MB. Free memory is still 184.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.70ms. Allocated memory is still 207.6MB. Free memory was 172.2MB in the beginning and 156.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.61ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.23ms. Allocated memory is still 207.6MB. Free memory was 154.9MB in the beginning and 152.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 475.10ms. Allocated memory is still 207.6MB. Free memory was 152.8MB in the beginning and 137.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6864.75ms. Allocated memory was 207.6MB in the beginning and 283.1MB in the end (delta: 75.5MB). Free memory was 136.0MB in the beginning and 244.9MB in the end (delta: -108.9MB). There was no memory consumed. 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L241] RET, EXPR base2flt(0, 0) [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=-108, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-108, \old(m)=16777216, e=-108, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=-108, \old(m)=16777216, e=-108, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-108, \old(m)=16777216, e=-108, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=-108, \old(m)=16777216, e=-108, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-108, \old(m)=16777216, e=-108, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-108, \old(m)=16777216, __retres4=335544320] [L80] return (__retres4); VAL [\old(e)=-108, \old(m)=16777216, \result=335544320] [L242] RET, EXPR base2flt(ma, ea) VAL [ea=-108, ma=16777216] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-24, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-24, \old(m)=16777216, e=-24, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=-24, \old(m)=16777216, e=-24, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-24, \old(m)=16777216, e=-24, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=-24, \old(m)=16777216, e=-24, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-24, \old(m)=16777216, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-24, \old(m)=16777216, __retres4=1744830464] [L80] return (__retres4); VAL [\old(e)=-24, \old(m)=16777216, \result=1744830464] [L243] RET, EXPR base2flt(mb, eb) VAL [a=335544320, ea=-108, eb=-24, ma=16777216, mb=16777216] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=335544320, \old(b)=1744830464] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=335544320, \old(b)=1744830464, a=335544320, b=1744830464] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=335544320, \old(b)=1744830464, a=1744830464, b=335544320] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] mb = mb | (1U << 24U) VAL [\old(a)=335544320, \old(b)=1744830464, a=1744830464, ea=-24, eb=-108, ma=16777216, mb=16777216] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L114] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=335544320, \old(b)=1744830464, a=1744830464, ea=-24, eb=-108, ma=16777216, mb=16777216] [L115] delta = ea - eb VAL [\old(a)=335544320, \old(b)=1744830464, a=1744830464, delta=84, ea=-24, ma=16777216, mb=16777216] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0] [L17] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 3718 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3171 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 647 IncrementalHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 547 mSDtfsCounter, 647 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 663 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 86 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 375 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 644 ConstructedInterpolants, 1 QuantifiedInterpolants, 1060 SizeOfPredicates, 16 NumberOfNonLiveVariables, 672 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 271/298 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 RESULT: Ultimate proved your program to be incorrect! [2024-10-31 19:33:18,244 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...