/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 13:28:16,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 13:28:16,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 13:28:16,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 13:28:16,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 13:28:16,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 13:28:16,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 13:28:16,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 13:28:16,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 13:28:16,836 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 13:28:16,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 13:28:16,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 13:28:16,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 13:28:16,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 13:28:16,838 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 13:28:16,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 13:28:16,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 13:28:16,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 13:28:16,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 13:28:16,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 13:28:16,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 13:28:16,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 13:28:16,840 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 13:28:16,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 13:28:16,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 13:28:16,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:28:16,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 13:28:16,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 13:28:16,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 13:28:16,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 13:28:16,844 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 13:28:16,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 13:28:16,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 13:28:16,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 13:28:17,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 13:28:17,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 13:28:17,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 13:28:17,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i [2023-12-23 13:28:18,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 13:28:18,225 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 13:28:18,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i [2023-12-23 13:28:18,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ab8b3ae/8ad21d34a25c4ad48fb71d56bbd808ef/FLAG8f5966f04 [2023-12-23 13:28:18,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ab8b3ae/8ad21d34a25c4ad48fb71d56bbd808ef [2023-12-23 13:28:18,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 13:28:18,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 13:28:18,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 13:28:18,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 13:28:18,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 13:28:18,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e964e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18, skipping insertion in model container [2023-12-23 13:28:18,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 13:28:18,400 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i[919,932] [2023-12-23 13:28:18,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:28:18,446 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 13:28:18,454 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i[919,932] [2023-12-23 13:28:18,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:28:18,487 INFO L206 MainTranslator]: Completed translation [2023-12-23 13:28:18,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18 WrapperNode [2023-12-23 13:28:18,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 13:28:18,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 13:28:18,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 13:28:18,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 13:28:18,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,520 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2023-12-23 13:28:18,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 13:28:18,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 13:28:18,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 13:28:18,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 13:28:18,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,539 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]. [2023-12-23 13:28:18,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 13:28:18,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 13:28:18,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 13:28:18,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 13:28:18,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (1/1) ... [2023-12-23 13:28:18,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:28:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 13:28:18,604 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) [2023-12-23 13:28:18,644 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 [2023-12-23 13:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 13:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 13:28:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 13:28:18,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 13:28:18,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 13:28:18,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 13:28:18,728 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 13:28:18,729 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 13:28:24,700 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 13:28:24,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 13:28:24,752 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 13:28:24,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:28:24 BoogieIcfgContainer [2023-12-23 13:28:24,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 13:28:24,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 13:28:24,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 13:28:24,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 13:28:24,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:28:18" (1/3) ... [2023-12-23 13:28:24,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:28:24, skipping insertion in model container [2023-12-23 13:28:24,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:28:18" (2/3) ... [2023-12-23 13:28:24,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:28:24, skipping insertion in model container [2023-12-23 13:28:24,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:28:24" (3/3) ... [2023-12-23 13:28:24,769 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-70.i [2023-12-23 13:28:24,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 13:28:24,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 13:28:24,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 13:28:24,825 INFO L357 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, mHoare=true, 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;@6b7226f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 13:28:24,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 13:28:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 48 states have internal predecessors, (70), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-23 13:28:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:28:24,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:28:24,850 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:28:24,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:28:24,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:28:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2032269290, now seen corresponding path program 1 times [2023-12-23 13:28:24,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:28:24,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746505142] [2023-12-23 13:28:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:24,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:28:24,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:28:24,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 13:28:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:25,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 13:28:25,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-23 13:28:25,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:28:25,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:28:25,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746505142] [2023-12-23 13:28:25,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746505142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:28:25,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:28:25,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 13:28:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84634883] [2023-12-23 13:28:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:28:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 13:28:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:28:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 13:28:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:28:25,388 INFO L87 Difference]: Start difference. First operand has 75 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 48 states have internal predecessors, (70), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 13:28:27,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:28:27,315 INFO L93 Difference]: Finished difference Result 147 states and 263 transitions. [2023-12-23 13:28:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 13:28:27,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2023-12-23 13:28:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:28:27,359 INFO L225 Difference]: With dead ends: 147 [2023-12-23 13:28:27,359 INFO L226 Difference]: Without dead ends: 73 [2023-12-23 13:28:27,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:28:27,364 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-23 13:28:27,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-23 13:28:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-23 13:28:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-23 13:28:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-23 13:28:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2023-12-23 13:28:27,413 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 161 [2023-12-23 13:28:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:28:27,413 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2023-12-23 13:28:27,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 13:28:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2023-12-23 13:28:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:28:27,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:28:27,419 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:28:27,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 13:28:27,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:27,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:28:27,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:28:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash -702718824, now seen corresponding path program 1 times [2023-12-23 13:28:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:28:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280256025] [2023-12-23 13:28:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:28:27,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:28:27,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 13:28:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:28,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 13:28:28,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 618 proven. 39 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-23 13:28:30,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:28:30,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:28:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280256025] [2023-12-23 13:28:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280256025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:28:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [360685056] [2023-12-23 13:28:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:30,453 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:28:30,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:28:30,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 13:28:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:30,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 13:28:30,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-23 13:28:30,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:28:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [360685056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:28:30,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:28:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-23 13:28:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464451489] [2023-12-23 13:28:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:28:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 13:28:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:28:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 13:28:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-23 13:28:30,891 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:32,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:28:32,781 INFO L93 Difference]: Finished difference Result 291 states and 435 transitions. [2023-12-23 13:28:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 13:28:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 161 [2023-12-23 13:28:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:28:32,784 INFO L225 Difference]: With dead ends: 291 [2023-12-23 13:28:32,784 INFO L226 Difference]: Without dead ends: 219 [2023-12-23 13:28:32,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-23 13:28:32,785 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 213 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 13:28:32,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 494 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 13:28:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-23 13:28:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 211. [2023-12-23 13:28:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 150 states have (on average 1.3733333333333333) internal successors, (206), 152 states have internal predecessors, (206), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-23 13:28:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 318 transitions. [2023-12-23 13:28:32,805 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 318 transitions. Word has length 161 [2023-12-23 13:28:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:28:32,806 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 318 transitions. [2023-12-23 13:28:32,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 318 transitions. [2023-12-23 13:28:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:28:32,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:28:32,810 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:28:32,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 13:28:33,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 13:28:33,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:33,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:28:33,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:28:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash -309691814, now seen corresponding path program 1 times [2023-12-23 13:28:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:28:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713952950] [2023-12-23 13:28:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:33,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:28:33,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:28:33,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 13:28:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:33,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 13:28:33,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 618 proven. 39 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-23 13:28:35,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:28:35,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:28:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713952950] [2023-12-23 13:28:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713952950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:28:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1269479376] [2023-12-23 13:28:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:35,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:35,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:28:35,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:28:35,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 13:28:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:36,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 13:28:36,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-23 13:28:36,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:28:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1269479376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:28:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:28:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2023-12-23 13:28:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799783714] [2023-12-23 13:28:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:28:36,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 13:28:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:28:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 13:28:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-23 13:28:36,655 INFO L87 Difference]: Start difference. First operand 211 states and 318 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:38,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:39,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:28:39,937 INFO L93 Difference]: Finished difference Result 627 states and 944 transitions. [2023-12-23 13:28:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 13:28:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 161 [2023-12-23 13:28:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:28:39,944 INFO L225 Difference]: With dead ends: 627 [2023-12-23 13:28:39,944 INFO L226 Difference]: Without dead ends: 417 [2023-12-23 13:28:39,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-23 13:28:39,947 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-23 13:28:39,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 184 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-23 13:28:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-23 13:28:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 415. [2023-12-23 13:28:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 294 states have (on average 1.3401360544217686) internal successors, (394), 298 states have internal predecessors, (394), 112 states have call successors, (112), 8 states have call predecessors, (112), 8 states have return successors, (112), 108 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-23 13:28:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 618 transitions. [2023-12-23 13:28:39,997 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 618 transitions. Word has length 161 [2023-12-23 13:28:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:28:39,998 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 618 transitions. [2023-12-23 13:28:39,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 618 transitions. [2023-12-23 13:28:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:28:40,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:28:40,004 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:28:40,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-23 13:28:40,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 13:28:40,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:40,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:28:40,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:28:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -309632232, now seen corresponding path program 1 times [2023-12-23 13:28:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:28:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893732569] [2023-12-23 13:28:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:40,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:40,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:28:40,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:28:40,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 13:28:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:40,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 13:28:40,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 618 proven. 39 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-23 13:28:42,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:28:42,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:28:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893732569] [2023-12-23 13:28:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893732569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:28:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [521729054] [2023-12-23 13:28:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:28:42,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:28:42,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 13:28:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:43,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 13:28:43,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-23 13:28:43,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:28:43,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [521729054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:28:43,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:28:43,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-23 13:28:43,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390371080] [2023-12-23 13:28:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:28:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 13:28:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:28:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 13:28:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-23 13:28:43,726 INFO L87 Difference]: Start difference. First operand 415 states and 618 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:47,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:49,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:51,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:54,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:28:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:28:55,772 INFO L93 Difference]: Finished difference Result 1012 states and 1500 transitions. [2023-12-23 13:28:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 13:28:55,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 161 [2023-12-23 13:28:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:28:55,777 INFO L225 Difference]: With dead ends: 1012 [2023-12-23 13:28:55,777 INFO L226 Difference]: Without dead ends: 598 [2023-12-23 13:28:55,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-23 13:28:55,778 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 232 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-23 13:28:55,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 370 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-23 13:28:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-23 13:28:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 584. [2023-12-23 13:28:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 407 states have (on average 1.3144963144963144) internal successors, (535), 412 states have internal predecessors, (535), 165 states have call successors, (165), 11 states have call predecessors, (165), 11 states have return successors, (165), 160 states have call predecessors, (165), 165 states have call successors, (165) [2023-12-23 13:28:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 865 transitions. [2023-12-23 13:28:55,814 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 865 transitions. Word has length 161 [2023-12-23 13:28:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:28:55,820 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 865 transitions. [2023-12-23 13:28:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:28:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 865 transitions. [2023-12-23 13:28:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:28:55,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:28:55,821 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:28:55,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 13:28:56,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 13:28:56,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 13:28:56,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:28:56,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:28:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1594664, now seen corresponding path program 1 times [2023-12-23 13:28:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:28:56,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727921469] [2023-12-23 13:28:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:28:56,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:28:56,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:28:56,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:28:56,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 13:28:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:28:56,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 13:28:56,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:28:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 618 proven. 39 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-23 13:28:58,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:29:02,367 WARN L854 $PredicateComparison]: unable to prove that (forall ((~var_1_19~0 (_ BitVec 32))) (or (not (bvsge ((_ zero_extend 32) ~var_1_19~0) (_ bv3221225470 64))) (not (bvuge (bvadd (bvneg ((_ zero_extend 16) c_~last_1_var_1_9~0)) ~var_1_19~0 (bvneg c_~last_1_var_1_11~0)) (bvneg ((_ zero_extend 16) c_~var_1_9~0)))))) is different from false [2023-12-23 13:29:02,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:29:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727921469] [2023-12-23 13:29:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727921469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:29:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1917418069] [2023-12-23 13:29:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:29:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:29:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:29:02,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:29:02,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 13:29:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:29:03,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 13:29:03,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:29:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 618 proven. 39 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-23 13:29:04,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:29:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1917418069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:29:04,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:29:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-23 13:29:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282878789] [2023-12-23 13:29:04,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:29:04,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 13:29:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:29:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 13:29:04,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2023-12-23 13:29:04,986 INFO L87 Difference]: Start difference. First operand 584 states and 865 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 13:29:08,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:29:13,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:29:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:29:15,127 INFO L93 Difference]: Finished difference Result 1357 states and 1995 transitions. [2023-12-23 13:29:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 13:29:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2023-12-23 13:29:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:29:15,131 INFO L225 Difference]: With dead ends: 1357 [2023-12-23 13:29:15,131 INFO L226 Difference]: Without dead ends: 774 [2023-12-23 13:29:15,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=130, Invalid=379, Unknown=1, NotChecked=42, Total=552 [2023-12-23 13:29:15,133 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 233 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-23 13:29:15,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 521 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-23 13:29:15,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-12-23 13:29:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 720. [2023-12-23 13:29:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 488 states have (on average 1.2868852459016393) internal successors, (628), 494 states have internal predecessors, (628), 215 states have call successors, (215), 16 states have call predecessors, (215), 16 states have return successors, (215), 209 states have call predecessors, (215), 215 states have call successors, (215) [2023-12-23 13:29:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1058 transitions. [2023-12-23 13:29:15,176 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1058 transitions. Word has length 161 [2023-12-23 13:29:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:29:15,176 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1058 transitions. [2023-12-23 13:29:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 13:29:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1058 transitions. [2023-12-23 13:29:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-23 13:29:15,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:29:15,177 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:29:15,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 13:29:15,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 13:29:15,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 13:29:15,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:29:15,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:29:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1903364312, now seen corresponding path program 1 times [2023-12-23 13:29:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:29:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310696090] [2023-12-23 13:29:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:29:15,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:29:15,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:29:15,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:29:15,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-23 13:29:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:29:15,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 13:29:15,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:29:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 282 proven. 63 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-23 13:29:16,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:29:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-23 13:29:16,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:29:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310696090] [2023-12-23 13:29:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310696090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 13:29:16,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:29:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 13:29:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626287175] [2023-12-23 13:29:16,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:29:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 13:29:16,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:29:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 13:29:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 13:29:16,585 INFO L87 Difference]: Start difference. First operand 720 states and 1058 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-23 13:29:19,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:29:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:29:19,436 INFO L93 Difference]: Finished difference Result 973 states and 1412 transitions. [2023-12-23 13:29:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 13:29:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 161 [2023-12-23 13:29:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:29:19,472 INFO L225 Difference]: With dead ends: 973 [2023-12-23 13:29:19,472 INFO L226 Difference]: Without dead ends: 378 [2023-12-23 13:29:19,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 13:29:19,474 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 51 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-23 13:29:19,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 181 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-23 13:29:19,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-23 13:29:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 308. [2023-12-23 13:29:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 194 states have internal predecessors, (233), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 13:29:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 433 transitions. [2023-12-23 13:29:19,490 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 433 transitions. Word has length 161 [2023-12-23 13:29:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:29:19,490 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 433 transitions. [2023-12-23 13:29:19,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-23 13:29:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 433 transitions. [2023-12-23 13:29:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-23 13:29:19,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:29:19,491 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:29:19,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-23 13:29:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:29:19,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:29:19,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:29:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1412684916, now seen corresponding path program 1 times [2023-12-23 13:29:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:29:19,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29504665] [2023-12-23 13:29:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:29:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:29:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:29:19,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:29:19,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-23 13:29:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:29:20,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 13:29:20,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:29:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-23 13:29:20,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:29:20,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:29:20,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29504665] [2023-12-23 13:29:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29504665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:29:20,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:29:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 13:29:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046194745] [2023-12-23 13:29:20,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:29:20,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 13:29:20,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:29:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 13:29:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 13:29:20,519 INFO L87 Difference]: Start difference. First operand 308 states and 433 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:29:23,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:29:25,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 13:29:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:29:25,561 INFO L93 Difference]: Finished difference Result 492 states and 692 transitions. [2023-12-23 13:29:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 13:29:25,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 162 [2023-12-23 13:29:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:29:25,600 INFO L225 Difference]: With dead ends: 492 [2023-12-23 13:29:25,600 INFO L226 Difference]: Without dead ends: 334 [2023-12-23 13:29:25,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 13:29:25,601 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 93 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-23 13:29:25,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 329 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-23 13:29:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-23 13:29:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 308. [2023-12-23 13:29:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 194 states have (on average 1.1855670103092784) internal successors, (230), 194 states have internal predecessors, (230), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 13:29:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 430 transitions. [2023-12-23 13:29:25,639 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 430 transitions. Word has length 162 [2023-12-23 13:29:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:29:25,642 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 430 transitions. [2023-12-23 13:29:25,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 13:29:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 430 transitions. [2023-12-23 13:29:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-23 13:29:25,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:29:25,643 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:29:25,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-23 13:29:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:29:25,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:29:25,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:29:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 141080351, now seen corresponding path program 1 times [2023-12-23 13:29:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:29:25,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101624411] [2023-12-23 13:29:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:29:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:29:25,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:29:25,858 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:29:25,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-23 13:29:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:29:26,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-23 13:29:26,305 INFO L285 TraceCheckSpWp]: Computing forward predicates...