/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/floor_nondet.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:54:11,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:54:11,325 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 13:54:11,331 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:54:11,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:54:11,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:54:11,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:54:11,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:54:11,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:54:11,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:54:11,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:54:11,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:54:11,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:54:11,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:54:11,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:54:11,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:54:11,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:54:11,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:54:11,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:54:11,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:54:11,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:54:11,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:54:11,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:54:11,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:54:11,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:54:11,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:54:11,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:54:11,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:54:11,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:54:11,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:11,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:54:11,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:54:11,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:54:11,372 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:54:11,372 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:54:11,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:54:11,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:54:11,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:54:11,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:54:11,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:54:11,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:54:11,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:54:11,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:54:11,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:54:11,614 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:54:11,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/floor_nondet.i [2024-11-03 13:54:13,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:54:13,264 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:54:13,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/floor_nondet.i [2024-11-03 13:54:13,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778810889/d2b80ae28fc440ff87cbaa155ab8f19e/FLAG8ed3799c7 [2024-11-03 13:54:13,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778810889/d2b80ae28fc440ff87cbaa155ab8f19e [2024-11-03 13:54:13,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:54:13,616 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:54:13,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:13,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:54:13,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:54:13,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:13" (1/1) ... [2024-11-03 13:54:13,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11081f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:13, skipping insertion in model container [2024-11-03 13:54:13,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:54:13" (1/1) ... [2024-11-03 13:54:13,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:54:14,043 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/floor_nondet.i[38163,38176] [2024-11-03 13:54:14,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:14,070 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:54:14,104 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/floor_nondet.i[38163,38176] [2024-11-03 13:54:14,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:54:14,202 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:54:14,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14 WrapperNode [2024-11-03 13:54:14,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:54:14,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:14,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:54:14,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:54:14,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,286 INFO L138 Inliner]: procedures = 461, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2024-11-03 13:54:14,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:54:14,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:54:14,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:54:14,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:54:14,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,310 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 13:54:14,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:54:14,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:54:14,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:54:14,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:54:14,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (1/1) ... [2024-11-03 13:54:14,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:54:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:54:14,357 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 13:54:14,358 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 13:54:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:54:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 13:54:14,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 13:54:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:54:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:54:14,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:54:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:54:14,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:54:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:14,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2024-11-03 13:54:14,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:54:14,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:54:14,609 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-03 13:54:14,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:54:14,622 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:54:14,623 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-03 13:54:14,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:14 BoogieIcfgContainer [2024-11-03 13:54:14,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:54:14,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:54:14,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:54:14,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:54:14,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:54:13" (1/3) ... [2024-11-03 13:54:14,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ae23ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:14, skipping insertion in model container [2024-11-03 13:54:14,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:54:14" (2/3) ... [2024-11-03 13:54:14,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ae23ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:54:14, skipping insertion in model container [2024-11-03 13:54:14,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:54:14" (3/3) ... [2024-11-03 13:54:14,633 INFO L112 eAbstractionObserver]: Analyzing ICFG floor_nondet.i [2024-11-03 13:54:14,648 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:54:14,649 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:54:14,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:54:14,703 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;@427762a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:54:14,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:54:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 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 13:54:14,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 13:54:14,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:14,715 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 13:54:14,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:14,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:14,721 INFO L85 PathProgramCache]: Analyzing trace with hash -632255995, now seen corresponding path program 1 times [2024-11-03 13:54:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039070273] [2024-11-03 13:54:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:14,732 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:14,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:14,734 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 13:54:14,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:54:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:14,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:54:14,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 13:54:14,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:14,941 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039070273] [2024-11-03 13:54:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1039070273] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:54:14,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:54:14,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-03 13:54:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710808005] [2024-11-03 13:54:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:14,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:54:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:14,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:54:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:14,977 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 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 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:15,025 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2024-11-03 13:54:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:54:15,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-11-03 13:54:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:15,034 INFO L225 Difference]: With dead ends: 71 [2024-11-03 13:54:15,034 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 13:54:15,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:15,040 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:15,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:54:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 13:54:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-03 13:54:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-03 13:54:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-03 13:54:15,073 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 27 [2024-11-03 13:54:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:15,074 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-03 13:54:15,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-03 13:54:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 13:54:15,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:15,076 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 13:54:15,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:54:15,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:15,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:15,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2136548126, now seen corresponding path program 1 times [2024-11-03 13:54:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172283377] [2024-11-03 13:54:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:15,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:15,282 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 13:54:15,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:54:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:15,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:54:15,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 13:54:15,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:15,389 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172283377] [2024-11-03 13:54:15,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1172283377] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:54:15,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:54:15,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-03 13:54:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645424441] [2024-11-03 13:54:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:15,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:54:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:54:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:15,393 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:15,426 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-03 13:54:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:54:15,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-03 13:54:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:15,429 INFO L225 Difference]: With dead ends: 64 [2024-11-03 13:54:15,429 INFO L226 Difference]: Without dead ends: 36 [2024-11-03 13:54:15,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:15,431 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:15,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:54:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-03 13:54:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-03 13:54:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-03 13:54:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-03 13:54:15,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 28 [2024-11-03 13:54:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:15,444 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-03 13:54:15,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-03 13:54:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-03 13:54:15,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:15,445 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 13:54:15,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:54:15,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:15,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:15,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1302988330, now seen corresponding path program 1 times [2024-11-03 13:54:15,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:15,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123807460] [2024-11-03 13:54:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:15,651 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:15,654 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 13:54:15,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:54:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:15,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:54:15,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 13:54:15,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 13:54:15,756 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:15,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123807460] [2024-11-03 13:54:15,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [123807460] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 13:54:15,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 13:54:15,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-03 13:54:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85972938] [2024-11-03 13:54:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:15,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:54:15,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:54:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:15,759 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:15,782 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-03 13:54:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:54:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-03 13:54:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:15,784 INFO L225 Difference]: With dead ends: 64 [2024-11-03 13:54:15,784 INFO L226 Difference]: Without dead ends: 36 [2024-11-03 13:54:15,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:54:15,786 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:15,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:54:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-03 13:54:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-03 13:54:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-03 13:54:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-03 13:54:15,794 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 29 [2024-11-03 13:54:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:15,794 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-03 13:54:15,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 13:54:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-03 13:54:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-03 13:54:15,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:15,796 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 13:54:15,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:54:15,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:15,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash -912578969, now seen corresponding path program 1 times [2024-11-03 13:54:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665383113] [2024-11-03 13:54:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:16,001 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 13:54:16,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:54:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:16,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:16,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:16,259 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 13:54:16,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:16,341 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 13:54:16,342 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:16,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665383113] [2024-11-03 13:54:16,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1665383113] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:16,342 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:16,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776993118] [2024-11-03 13:54:16,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:16,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:16,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:16,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:16,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:16,344 INFO L87 Difference]: Start difference. First operand 34 states and 43 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 13:54:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:16,617 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2024-11-03 13:54:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:54:16,620 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 13:54:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:16,622 INFO L225 Difference]: With dead ends: 82 [2024-11-03 13:54:16,622 INFO L226 Difference]: Without dead ends: 62 [2024-11-03 13:54:16,623 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 13:54:16,625 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:16,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 182 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:54:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-03 13:54:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-03 13:54:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 39 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-03 13:54:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2024-11-03 13:54:16,645 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 30 [2024-11-03 13:54:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:16,646 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2024-11-03 13:54:16,646 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 13:54:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2024-11-03 13:54:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:54:16,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:16,647 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, 1, 1, 1, 1] [2024-11-03 13:54:16,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:54:16,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:16,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:16,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 932323024, now seen corresponding path program 1 times [2024-11-03 13:54:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:16,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916237651] [2024-11-03 13:54:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:16,853 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:16,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:16,855 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 13:54:16,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:54:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:16,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:16,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:54:17,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:54:17,107 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916237651] [2024-11-03 13:54:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [916237651] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:17,107 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 13:54:17,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407863794] [2024-11-03 13:54:17,107 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:17,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 13:54:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 13:54:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:54:17,109 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 13:54:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:17,636 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2024-11-03 13:54:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:54:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 31 [2024-11-03 13:54:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:17,641 INFO L225 Difference]: With dead ends: 80 [2024-11-03 13:54:17,641 INFO L226 Difference]: Without dead ends: 60 [2024-11-03 13:54:17,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 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 13:54:17,643 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:17,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 153 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:54:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-03 13:54:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-11-03 13:54:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-03 13:54:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-03 13:54:17,652 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 31 [2024-11-03 13:54:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:17,653 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-03 13:54:17,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 13:54:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-03 13:54:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-03 13:54:17,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:17,654 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 13:54:17,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:54:17,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:17,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:17,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1881140254, now seen corresponding path program 1 times [2024-11-03 13:54:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069110583] [2024-11-03 13:54:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:17,856 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:17,859 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 13:54:17,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:54:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:17,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:17,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:54:17,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:54:18,052 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069110583] [2024-11-03 13:54:18,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2069110583] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:18,053 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:18,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:18,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098631472] [2024-11-03 13:54:18,053 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:18,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:18,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:18,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:18,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:18,055 INFO L87 Difference]: Start difference. First operand 58 states and 73 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 13:54:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:18,322 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-03 13:54:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:54:18,326 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 32 [2024-11-03 13:54:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:18,327 INFO L225 Difference]: With dead ends: 78 [2024-11-03 13:54:18,327 INFO L226 Difference]: Without dead ends: 58 [2024-11-03 13:54:18,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 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 13:54:18,329 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:18,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 213 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:54:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-03 13:54:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-03 13:54:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-03 13:54:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2024-11-03 13:54:18,336 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 32 [2024-11-03 13:54:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:18,336 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2024-11-03 13:54:18,336 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 13:54:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2024-11-03 13:54:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 13:54:18,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:18,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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 13:54:18,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:54:18,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:18,538 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:18,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1219928427, now seen corresponding path program 1 times [2024-11-03 13:54:18,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:18,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115092625] [2024-11-03 13:54:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:18,539 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:18,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:18,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:18,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:54:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:54:18,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:54:18,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:54:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-03 13:54:18,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:54:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-03 13:54:18,725 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:54:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115092625] [2024-11-03 13:54:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [115092625] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:54:18,725 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:54:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 13:54:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97387248] [2024-11-03 13:54:18,725 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:54:18,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:54:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:54:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:54:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:54:18,727 INFO L87 Difference]: Start difference. First operand 56 states and 68 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 13:54:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:54:18,812 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2024-11-03 13:54:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:54:18,813 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 33 [2024-11-03 13:54:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:54:18,814 INFO L225 Difference]: With dead ends: 86 [2024-11-03 13:54:18,814 INFO L226 Difference]: Without dead ends: 42 [2024-11-03 13:54:18,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 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 13:54:18,815 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:54:18,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:54:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-03 13:54:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-03 13:54:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 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 13:54:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-03 13:54:18,824 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 33 [2024-11-03 13:54:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:54:18,824 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-03 13:54:18,824 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 13:54:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-03 13:54:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 13:54:18,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:54:18,825 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-03 13:54:18,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:54:19,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:19,027 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:54:19,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:54:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 410581801, now seen corresponding path program 1 times [2024-11-03 13:54:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:54:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738451332] [2024-11-03 13:54:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:54:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:54:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:19,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:54:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:54:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:19,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 13:54:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 13:54:19,130 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 13:54:19,130 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 13:54:19,131 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:54:19,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-03 13:54:19,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:54:19,337 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:54:19,356 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:54:19,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:54:19 BoogieIcfgContainer [2024-11-03 13:54:19,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:54:19,359 INFO L158 Benchmark]: Toolchain (without parser) took 5742.97ms. Allocated memory was 188.7MB in the beginning and 331.4MB in the end (delta: 142.6MB). Free memory was 140.9MB in the beginning and 217.3MB in the end (delta: -76.4MB). Peak memory consumption was 66.5MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,359 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:54:19,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.41ms. Allocated memory is still 188.7MB. Free memory was 140.5MB in the beginning and 90.5MB in the end (delta: 50.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.17ms. Allocated memory was 188.7MB in the beginning and 331.4MB in the end (delta: 142.6MB). Free memory was 90.5MB in the beginning and 295.9MB in the end (delta: -205.5MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,360 INFO L158 Benchmark]: Boogie Preprocessor took 33.37ms. Allocated memory is still 331.4MB. Free memory was 295.9MB in the beginning and 293.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,360 INFO L158 Benchmark]: RCFGBuilder took 300.99ms. Allocated memory is still 331.4MB. Free memory was 293.8MB in the beginning and 279.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,360 INFO L158 Benchmark]: TraceAbstraction took 4731.60ms. Allocated memory is still 331.4MB. Free memory was 278.6MB in the beginning and 217.3MB in the end (delta: 61.3MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2024-11-03 13:54:19,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 586.41ms. Allocated memory is still 188.7MB. Free memory was 140.5MB in the beginning and 90.5MB in the end (delta: 50.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 85.17ms. Allocated memory was 188.7MB in the beginning and 331.4MB in the end (delta: 142.6MB). Free memory was 90.5MB in the beginning and 295.9MB in the end (delta: -205.5MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.37ms. Allocated memory is still 331.4MB. Free memory was 295.9MB in the beginning and 293.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 300.99ms. Allocated memory is still 331.4MB. Free memory was 293.8MB in the beginning and 279.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4731.60ms. Allocated memory is still 331.4MB. Free memory was 278.6MB in the beginning and 217.3MB in the end (delta: 61.3MB). Peak memory consumption was 61.3MB. 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=0.25390625000000006] [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=0.25390625000000006] [L1015] int save_round = fegetround(); VAL [d=0.25390625000000006, save_round=1] [L1016] FCALL fesetround(0x400) VAL [d=0.25390625000000006, save_round=1] [L1017] double result = rint(d); [L1018] FCALL fesetround(save_round) VAL [d=0.25390625000000006, result=1.5, save_round=1] [L1020] CALL __VERIFIER_assert(floor(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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 883 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 565 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 318 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 636 SizeOfPredicates, 4 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 104/110 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 13:54:19,390 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...