/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_loopvsstraightlinecode_100-1loop_file-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 21:44:38,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 21:44:38,826 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 21:44:38,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 21:44:38,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 21:44:38,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 21:44:38,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 21:44:38,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 21:44:38,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 21:44:38,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 21:44:38,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 21:44:38,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 21:44:38,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 21:44:38,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 21:44:38,866 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 21:44:38,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 21:44:38,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 21:44:38,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 21:44:38,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 21:44:38,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 21:44:38,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 21:44:38,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 21:44:38,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 21:44:38,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 21:44:38,870 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 21:44:38,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 21:44:38,870 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 21:44:38,870 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 21:44:38,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 21:44:38,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 21:44:38,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 21:44:38,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 21:44:38,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 21:44:38,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 21:44:38,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 21:44:38,874 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 21:44:38,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 21:44:39,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 21:44:39,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 21:44:39,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 21:44:39,139 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 21:44:39,140 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 21:44:39,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-61.i [2023-12-23 21:44:40,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 21:44:40,582 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 21:44:40,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-61.i [2023-12-23 21:44:40,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7755d14/cb21aac9e61c4db39361f9a35fa46fd6/FLAGa64b055fb [2023-12-23 21:44:40,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e7755d14/cb21aac9e61c4db39361f9a35fa46fd6 [2023-12-23 21:44:40,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 21:44:40,617 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 21:44:40,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 21:44:40,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 21:44:40,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 21:44:40,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:40,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf56232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40, skipping insertion in model container [2023-12-23 21:44:40,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:40,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 21:44:40,776 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_loopvsstraightlinecode_100-1loop_file-61.i[916,929] [2023-12-23 21:44:40,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 21:44:40,856 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 21:44:40,871 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_loopvsstraightlinecode_100-1loop_file-61.i[916,929] [2023-12-23 21:44:40,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 21:44:40,950 INFO L206 MainTranslator]: Completed translation [2023-12-23 21:44:40,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40 WrapperNode [2023-12-23 21:44:40,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 21:44:40,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 21:44:40,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 21:44:40,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 21:44:40,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:40,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,004 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 197 [2023-12-23 21:44:41,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 21:44:41,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 21:44:41,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 21:44:41,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 21:44:41,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,034 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 21:44:41,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 21:44:41,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 21:44:41,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 21:44:41,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 21:44:41,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (1/1) ... [2023-12-23 21:44:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 21:44:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 21:44:41,098 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 21:44:41,126 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 21:44:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 21:44:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 21:44:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 21:44:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 21:44:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 21:44:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 21:44:41,235 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 21:44:41,240 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 21:44:41,834 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 21:44:41,962 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 21:44:41,963 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 21:44:41,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:44:41 BoogieIcfgContainer [2023-12-23 21:44:41,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 21:44:41,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 21:44:41,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 21:44:41,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 21:44:41,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:44:40" (1/3) ... [2023-12-23 21:44:41,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247411e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:44:41, skipping insertion in model container [2023-12-23 21:44:41,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:44:40" (2/3) ... [2023-12-23 21:44:41,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247411e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:44:41, skipping insertion in model container [2023-12-23 21:44:41,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:44:41" (3/3) ... [2023-12-23 21:44:41,970 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-61.i [2023-12-23 21:44:41,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 21:44:41,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 21:44:42,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 21:44:42,046 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;@43fc82d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 21:44:42,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 21:44:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 21:44:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-23 21:44:42,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:44:42,079 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:44:42,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:44:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 269210861, now seen corresponding path program 1 times [2023-12-23 21:44:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:44:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396218241] [2023-12-23 21:44:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:42,097 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 21:44:42,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:44:42,104 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 21:44:42,148 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 21:44:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:42,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 21:44:42,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:44:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2023-12-23 21:44:42,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 21:44:42,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:44:42,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396218241] [2023-12-23 21:44:42,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396218241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 21:44:42,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 21:44:42,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 21:44:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107257412] [2023-12-23 21:44:42,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 21:44:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 21:44:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:44:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 21:44:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 21:44:42,539 INFO L87 Difference]: Start difference. First operand has 79 states, 50 states have (on average 1.52) internal successors, (76), 51 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-23 21:44:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:44:42,736 INFO L93 Difference]: Finished difference Result 157 states and 281 transitions. [2023-12-23 21:44:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 21:44:42,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2023-12-23 21:44:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:44:42,747 INFO L225 Difference]: With dead ends: 157 [2023-12-23 21:44:42,747 INFO L226 Difference]: Without dead ends: 77 [2023-12-23 21:44:42,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 163 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 21:44:42,755 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 21:44:42,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 21:44:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-23 21:44:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-23 21:44:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 21:44:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2023-12-23 21:44:42,815 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 164 [2023-12-23 21:44:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:44:42,816 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2023-12-23 21:44:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-23 21:44:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2023-12-23 21:44:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-23 21:44:42,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:44:42,826 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,843 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 (2)] Forceful destruction successful, exit code 0 [2023-12-23 21:44:43,036 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 21:44:43,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:44:43,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:44:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash -225792091, now seen corresponding path program 1 times [2023-12-23 21:44:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:44:43,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961000312] [2023-12-23 21:44:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:43,040 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 21:44:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:44:43,041 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 21:44:43,043 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 21:44:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:43,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 21:44:43,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:44:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-12-23 21:44:43,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:44:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-23 21:44:44,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:44:44,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961000312] [2023-12-23 21:44:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961000312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 21:44:44,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:44:44,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 21:44:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933827756] [2023-12-23 21:44:44,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:44:44,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 21:44:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:44:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 21:44:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 21:44:44,081 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 21:44:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:44:45,044 INFO L93 Difference]: Finished difference Result 243 states and 377 transitions. [2023-12-23 21:44:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 21:44:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 164 [2023-12-23 21:44:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:44:45,048 INFO L225 Difference]: With dead ends: 243 [2023-12-23 21:44:45,048 INFO L226 Difference]: Without dead ends: 167 [2023-12-23 21:44:45,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 21:44:45,050 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 319 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 21:44:45,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 271 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 21:44:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-23 21:44:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 86. [2023-12-23 21:44:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-23 21:44:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 130 transitions. [2023-12-23 21:44:45,086 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 130 transitions. Word has length 164 [2023-12-23 21:44:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:44:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 130 transitions. [2023-12-23 21:44:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 21:44:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 130 transitions. [2023-12-23 21:44:45,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-23 21:44:45,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:44:45,094 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:45,108 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 (3)] Forceful destruction successful, exit code 0 [2023-12-23 21:44:45,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 21:44:45,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:44:45,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:44:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1589445806, now seen corresponding path program 1 times [2023-12-23 21:44:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:44:45,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527463239] [2023-12-23 21:44:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:45,307 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 21:44:45,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:44:45,309 INFO L229 MonitoredProcess]: Starting monitored process 4 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 21:44:45,312 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 (4)] Waiting until timeout for monitored process [2023-12-23 21:44:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:45,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 21:44:45,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:44:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 584 proven. 105 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2023-12-23 21:44:46,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:44:47,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:44:47,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527463239] [2023-12-23 21:44:47,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527463239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:44:47,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185709488] [2023-12-23 21:44:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:47,074 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 21:44:47,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 21:44:47,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 21:44:47,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 21:44:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:48,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 21:44:48,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:44:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 333 proven. 9 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2023-12-23 21:44:50,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:44:53,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1185709488] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:44:53,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:44:53,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-23 21:44:53,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734411614] [2023-12-23 21:44:53,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:44:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-23 21:44:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:44:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-23 21:44:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-12-23 21:44:53,648 INFO L87 Difference]: Start difference. First operand 86 states and 130 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-12-23 21:44:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:44:58,326 INFO L93 Difference]: Finished difference Result 466 states and 685 transitions. [2023-12-23 21:44:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-23 21:44:58,328 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 165 [2023-12-23 21:44:58,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:44:58,332 INFO L225 Difference]: With dead ends: 466 [2023-12-23 21:44:58,332 INFO L226 Difference]: Without dead ends: 381 [2023-12-23 21:44:58,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=543, Invalid=1907, Unknown=0, NotChecked=0, Total=2450 [2023-12-23 21:44:58,335 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 673 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-23 21:44:58,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 835 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-23 21:44:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-23 21:44:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 251. [2023-12-23 21:44:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 161 states have (on average 1.2919254658385093) internal successors, (208), 161 states have internal predecessors, (208), 78 states have call successors, (78), 11 states have call predecessors, (78), 11 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-23 21:44:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 364 transitions. [2023-12-23 21:44:58,373 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 364 transitions. Word has length 165 [2023-12-23 21:44:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:44:58,374 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 364 transitions. [2023-12-23 21:44:58,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (52), 5 states have call predecessors, (52), 8 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2023-12-23 21:44:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 364 transitions. [2023-12-23 21:44:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-23 21:44:58,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:44:58,376 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:58,388 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 (4)] Forceful destruction successful, exit code 0 [2023-12-23 21:44:58,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 21:44:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 21:44:58,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:44:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:44:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 269762184, now seen corresponding path program 1 times [2023-12-23 21:44:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:44:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422598171] [2023-12-23 21:44:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:58,790 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 21:44:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:44:58,791 INFO L229 MonitoredProcess]: Starting monitored process 6 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 21:44:58,797 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 (6)] Waiting until timeout for monitored process [2023-12-23 21:44:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:59,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-23 21:44:59,121 INFO L285 TraceCheckSpWp]: Computing forward predicates...