/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-esbmc-regression/round_nondet.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:54:50,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:54:50,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:54:50,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:54:50,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:54:50,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:54:50,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:54:50,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:54:50,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:54:50,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:54:50,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:54:50,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:54:50,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:54:50,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:54:50,854 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:54:50,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:54:50,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:54:50,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:54:50,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:54:50,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:54:50,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:54:50,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:54:50,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:54:50,860 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:54:50,860 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:54:50,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:54:50,860 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:54:50,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:54:50,861 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:54:50,861 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:54:50,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:54:50,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:54:50,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:54:50,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:54:50,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:50,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:54:50,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:54:50,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:54:50,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:54:50,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:54:51,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:54:51,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:54:51,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:54:51,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:54:51,110 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:54:51,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/round_nondet.i [2024-11-03 13:54:52,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:54:52,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:54:52,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/round_nondet.i [2024-11-03 13:54:52,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a8c30fa/8d5c6b8b3b2545ed8c5042142120b019/FLAG25dc3a079 [2024-11-03 13:54:53,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a8c30fa/8d5c6b8b3b2545ed8c5042142120b019 [2024-11-03 13:54:53,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:54:53,125 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:54:53,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:53,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:54:53,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:54:53,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c34f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53, skipping insertion in model container [2024-11-03 13:54:53,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:54:53,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/round_nondet.i[38163,38176] [2024-11-03 13:54:53,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:53,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:54:53,619 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/round_nondet.i[38163,38176] [2024-11-03 13:54:53,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:53,730 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:54:53,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53 WrapperNode [2024-11-03 13:54:53,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:53,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:53,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:54:53,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:54:53,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,777 INFO L138 Inliner]: procedures = 461, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-03 13:54:53,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:53,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:54:53,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:54:53,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:54:53,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,796 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:54:53,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:54:53,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:54:53,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:54:53,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:54:53,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (1/1) ... [2024-11-03 13:54:53,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:54:53,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 13:54:53,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 13:54:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:54:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 13:54:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 13:54:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:54:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:54:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:54:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:54:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:54:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:54,000 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:54:54,002 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:54:54,142 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-03 13:54:54,143 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:54:54,153 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:54:54,153 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-03 13:54:54,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:54 BoogieIcfgContainer [2024-11-03 13:54:54,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:54:54,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:54:54,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:54:54,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:54:54,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:53" (1/3) ... [2024-11-03 13:54:54,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8626ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:54, skipping insertion in model container [2024-11-03 13:54:54,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:53" (2/3) ... [2024-11-03 13:54:54,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8626ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:54, skipping insertion in model container [2024-11-03 13:54:54,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:54" (3/3) ... [2024-11-03 13:54:54,163 INFO L112 eAbstractionObserver]: Analyzing ICFG round_nondet.i [2024-11-03 13:54:54,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:54:54,176 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:54:54,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:54:54,231 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;@59b6ca7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:54:54,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:54:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 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) [2024-11-03 13:54:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 13:54:54,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:54,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:54,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:54,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1502520411, now seen corresponding path program 1 times [2024-11-03 13:54:54,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430103064] [2024-11-03 13:54:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:54,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:54,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:54:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:54,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:54:54,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:54,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:54,366 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430103064] [2024-11-03 13:54:54,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1430103064] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:54,367 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:54,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:54:54,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57007887] [2024-11-03 13:54:54,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:54,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:54:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:54:54,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:54:54,396 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 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 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 13:54:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:54,420 INFO L93 Difference]: Finished difference Result 67 states and 95 transitions. [2024-11-03 13:54:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:54:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2024-11-03 13:54:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:54,431 INFO L225 Difference]: With dead ends: 67 [2024-11-03 13:54:54,431 INFO L226 Difference]: Without dead ends: 32 [2024-11-03 13:54:54,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:54:54,441 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:54,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:54:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-03 13:54:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-03 13:54:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:54:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-11-03 13:54:54,477 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 27 [2024-11-03 13:54:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:54,477 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-11-03 13:54:54,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 13:54:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-11-03 13:54:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 13:54:54,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:54,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:54,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:54:54,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:54,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:54,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1007136155, now seen corresponding path program 1 times [2024-11-03 13:54:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62192813] [2024-11-03 13:54:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:54,683 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:54,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:54,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:54,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:54:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:54,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:54,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:55,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:55,097 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:55,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62192813] [2024-11-03 13:54:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [62192813] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:55,098 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407756427] [2024-11-03 13:54:55,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:55,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:55,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:55,101 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:55,424 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2024-11-03 13:54:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:54:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 27 [2024-11-03 13:54:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:55,430 INFO L225 Difference]: With dead ends: 81 [2024-11-03 13:54:55,431 INFO L226 Difference]: Without dead ends: 55 [2024-11-03 13:54:55,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:54:55,434 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 25 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:55,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 134 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:54:55,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-03 13:54:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-11-03 13:54:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-03 13:54:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-03 13:54:55,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 27 [2024-11-03 13:54:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:55,454 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-03 13:54:55,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-03 13:54:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 13:54:55,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:55,457 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:55,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:54:55,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:55,659 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:55,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1139151692, now seen corresponding path program 1 times [2024-11-03 13:54:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065262891] [2024-11-03 13:54:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:55,661 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:55,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:55,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:55,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:54:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:55,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:55,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:55,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:55,954 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:55,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065262891] [2024-11-03 13:54:55,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2065262891] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:55,955 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:55,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 13:54:55,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599183994] [2024-11-03 13:54:55,955 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:55,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:54:55,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:54:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:55,959 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:56,392 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-11-03 13:54:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:54:56,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2024-11-03 13:54:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:56,393 INFO L225 Difference]: With dead ends: 79 [2024-11-03 13:54:56,393 INFO L226 Difference]: Without dead ends: 59 [2024-11-03 13:54:56,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:54:56,395 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 31 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:56,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 143 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 13:54:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-03 13:54:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2024-11-03 13:54:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:54:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-03 13:54:56,403 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2024-11-03 13:54:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:56,404 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-03 13:54:56,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-03 13:54:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-03 13:54:56,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:56,407 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 13:54:56,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:54:56,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:56,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:56,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash -812548960, now seen corresponding path program 1 times [2024-11-03 13:54:56,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31496941] [2024-11-03 13:54:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:56,610 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:56,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:56,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:56,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:54:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:56,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:56,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:56,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:56,800 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31496941] [2024-11-03 13:54:56,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [31496941] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:56,803 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:56,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033325948] [2024-11-03 13:54:56,803 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:56,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:56,804 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:56,888 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-03 13:54:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:54:56,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 29 [2024-11-03 13:54:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:56,890 INFO L225 Difference]: With dead ends: 59 [2024-11-03 13:54:56,890 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 13:54:56,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:56,891 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:56,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 129 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 13:54:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 13:54:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:54:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-03 13:54:56,901 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2024-11-03 13:54:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:56,902 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-03 13:54:56,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-03 13:54:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 13:54:56,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:56,903 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 13:54:56,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:54:57,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:57,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:57,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 846318223, now seen corresponding path program 1 times [2024-11-03 13:54:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484380867] [2024-11-03 13:54:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:57,106 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:57,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:57,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:54:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:57,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:57,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:57,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:57,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484380867] [2024-11-03 13:54:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1484380867] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:57,290 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:57,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:57,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279416895] [2024-11-03 13:54:57,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:57,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:57,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:57,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:57,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:57,291 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:57,366 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2024-11-03 13:54:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:54:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 30 [2024-11-03 13:54:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:57,367 INFO L225 Difference]: With dead ends: 59 [2024-11-03 13:54:57,367 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 13:54:57,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:57,368 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:57,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 13:54:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 13:54:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:54:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-03 13:54:57,378 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2024-11-03 13:54:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:57,379 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-03 13:54:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:54:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-03 13:54:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 13:54:57,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:57,381 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 13:54:57,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:54:57,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:57,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:57,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 36971597, now seen corresponding path program 1 times [2024-11-03 13:54:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506130407] [2024-11-03 13:54:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:57,583 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:57,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:57,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:57,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:54:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:57,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 13:54:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:57,651 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 13:54:57,652 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 13:54:57,652 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:54:57,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-03 13:54:57,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:57,857 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-03 13:54:57,875 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:54:57,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:54:57 BoogieIcfgContainer [2024-11-03 13:54:57,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:54:57,878 INFO L158 Benchmark]: Toolchain (without parser) took 4753.17ms. Allocated memory is still 352.3MB. Free memory was 305.8MB in the beginning and 216.6MB in the end (delta: 89.2MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,878 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:54:57,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.82ms. Allocated memory is still 352.3MB. Free memory was 305.4MB in the beginning and 322.9MB in the end (delta: -17.5MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.67ms. Allocated memory is still 352.3MB. Free memory was 322.9MB in the beginning and 319.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,879 INFO L158 Benchmark]: Boogie Preprocessor took 30.44ms. Allocated memory is still 352.3MB. Free memory was 319.8MB in the beginning and 317.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,879 INFO L158 Benchmark]: RCFGBuilder took 344.48ms. Allocated memory is still 352.3MB. Free memory was 317.7MB in the beginning and 304.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,879 INFO L158 Benchmark]: TraceAbstraction took 3721.02ms. Allocated memory is still 352.3MB. Free memory was 303.0MB in the beginning and 216.6MB in the end (delta: 86.4MB). Peak memory consumption was 85.9MB. Max. memory is 8.0GB. [2024-11-03 13:54:57,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 604.82ms. Allocated memory is still 352.3MB. Free memory was 305.4MB in the beginning and 322.9MB in the end (delta: -17.5MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.67ms. Allocated memory is still 352.3MB. Free memory was 322.9MB in the beginning and 319.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.44ms. Allocated memory is still 352.3MB. Free memory was 319.8MB in the beginning and 317.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 344.48ms. Allocated memory is still 352.3MB. Free memory was 317.7MB in the beginning and 304.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3721.02ms. Allocated memory is still 352.3MB. Free memory was 303.0MB in the beginning and 216.6MB in the end (delta: 86.4MB). Peak memory consumption was 85.9MB. 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 - UnprovableResult [Line: 1005]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of rint at line 1017. Possible FailurePath: [L1011] double d = __VERIFIER_nondet_double(); [L1012] CALL assume_abort_if_not(!(sizeof (d) == sizeof (float) ? __isinff (d) : sizeof (d) == sizeof (double) ? __isinf (d) : __isinfl (d))) VAL [\old(cond)=1] [L991] COND FALSE !(!cond) VAL [\old(cond)=1] [L1012] RET assume_abort_if_not(!(sizeof (d) == sizeof (float) ? __isinff (d) : sizeof (d) == sizeof (double) ? __isinf (d) : __isinfl (d))) VAL [d=-7.562500000000001] [L1013] CALL assume_abort_if_not(!(sizeof (d) == sizeof (float) ? __isnanf (d) : sizeof (d) == sizeof (double) ? __isnan (d) : __isnanl (d))) VAL [\old(cond)=1] [L991] COND FALSE !(!cond) VAL [\old(cond)=1] [L1013] RET assume_abort_if_not(!(sizeof (d) == sizeof (float) ? __isnanf (d) : sizeof (d) == sizeof (double) ? __isnan (d) : __isnanl (d))) VAL [d=-7.562500000000001] [L1015] int save_round = fegetround(); VAL [d=-7.562500000000001, save_round=1] [L1016] FCALL fesetround(0xc00) VAL [d=-7.562500000000001, save_round=1] [L1017] double result = rint(copysign(0.5 + fabs(d), d)); [L1018] FCALL fesetround(save_round) VAL [d=-7.562500000000001, result=-12.0, save_round=1] [L1020] CALL __VERIFIER_assert(round(d) == result) VAL [\old(cond)=0] [L1005] COND TRUE !(cond) VAL [\old(cond)=0] [L1005] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 375 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 202 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=2, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 SizeOfPredicates, 4 NumberOfNonLiveVariables, 261 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 70/70 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 could not prove your program: unable to determine feasibility of some traces [2024-11-03 13:54:57,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...