/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-pe-co_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 09:17:06,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 09:17:06,797 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 09:17:06,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 09:17:06,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 09:17:06,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 09:17:06,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 09:17:06,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 09:17:06,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 09:17:06,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 09:17:06,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 09:17:06,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 09:17:06,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 09:17:06,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 09:17:06,819 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 09:17:06,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 09:17:06,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 09:17:06,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 09:17:06,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 09:17:06,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 09:17:06,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 09:17:06,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 09:17:06,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 09:17:06,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 09:17:06,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 09:17:06,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 09:17:06,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 09:17:06,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 09:17:06,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 09:17:06,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:17:06,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 09:17:06,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 09:17:06,825 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 09:17:06,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 09:17:07,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 09:17:07,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 09:17:07,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 09:17:07,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 09:17:07,054 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 09:17:07,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-14.i [2023-12-23 09:17:08,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 09:17:08,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 09:17:08,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-14.i [2023-12-23 09:17:08,363 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53de4b60b/c695218ddd724df28085b2865e4cd0c1/FLAGcd6728044 [2023-12-23 09:17:08,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53de4b60b/c695218ddd724df28085b2865e4cd0c1 [2023-12-23 09:17:08,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 09:17:08,383 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 09:17:08,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 09:17:08,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 09:17:08,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 09:17:08,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b3bb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08, skipping insertion in model container [2023-12-23 09:17:08,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 09:17:08,533 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-pe-co_file-14.i[919,932] [2023-12-23 09:17:08,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:17:08,591 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 09:17:08,600 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-pe-co_file-14.i[919,932] [2023-12-23 09:17:08,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:17:08,639 INFO L206 MainTranslator]: Completed translation [2023-12-23 09:17:08,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08 WrapperNode [2023-12-23 09:17:08,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 09:17:08,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 09:17:08,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 09:17:08,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 09:17:08,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,688 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 204 [2023-12-23 09:17:08,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 09:17:08,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 09:17:08,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 09:17:08,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 09:17:08,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,724 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 09:17:08,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 09:17:08,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 09:17:08,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 09:17:08,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 09:17:08,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (1/1) ... [2023-12-23 09:17:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:17:08,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 09:17:08,784 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 09:17:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 09:17:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 09:17:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 09:17:08,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 09:17:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 09:17:08,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 09:17:08,807 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 09:17:08,916 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 09:17:08,917 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 09:17:41,786 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 09:17:41,826 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 09:17:41,826 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 09:17:41,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:17:41 BoogieIcfgContainer [2023-12-23 09:17:41,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 09:17:41,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 09:17:41,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 09:17:41,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 09:17:41,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:17:08" (1/3) ... [2023-12-23 09:17:41,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2420bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:17:41, skipping insertion in model container [2023-12-23 09:17:41,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:17:08" (2/3) ... [2023-12-23 09:17:41,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2420bf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:17:41, skipping insertion in model container [2023-12-23 09:17:41,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:17:41" (3/3) ... [2023-12-23 09:17:41,832 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-14.i [2023-12-23 09:17:41,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 09:17:41,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 09:17:41,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 09:17:41,883 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;@6a727fdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 09:17:41,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 09:17:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-23 09:17:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-23 09:17:41,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:17:41,911 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:41,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:17:41,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:17:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1273212472, now seen corresponding path program 1 times [2023-12-23 09:17:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:17:41,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048556108] [2023-12-23 09:17:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:17:41,933 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 09:17:41,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:17:41,950 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 09:17:41,956 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 09:17:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:17:42,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 09:17:42,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:17:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2023-12-23 09:17:42,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:17:42,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:17:42,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048556108] [2023-12-23 09:17:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048556108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:17:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:17:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 09:17:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116361010] [2023-12-23 09:17:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:17:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 09:17:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:17:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 09:17:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:17:42,577 INFO L87 Difference]: Start difference. First operand has 86 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-23 09:17:45,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:17:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:17:45,131 INFO L93 Difference]: Finished difference Result 169 states and 311 transitions. [2023-12-23 09:17:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 09:17:45,202 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 201 [2023-12-23 09:17:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:17:45,212 INFO L225 Difference]: With dead ends: 169 [2023-12-23 09:17:45,212 INFO L226 Difference]: Without dead ends: 84 [2023-12-23 09:17:45,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 200 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 09:17:45,217 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-23 09:17:45,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-23 09:17:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-23 09:17:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-23 09:17:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-23 09:17:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 134 transitions. [2023-12-23 09:17:45,251 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 134 transitions. Word has length 201 [2023-12-23 09:17:45,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:17:45,251 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 134 transitions. [2023-12-23 09:17:45,252 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, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-23 09:17:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 134 transitions. [2023-12-23 09:17:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-23 09:17:45,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:17:45,257 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:45,273 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 09:17:45,462 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 09:17:45,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:17:45,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:17:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1484865798, now seen corresponding path program 1 times [2023-12-23 09:17:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:17:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878463305] [2023-12-23 09:17:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:17:45,464 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 09:17:45,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:17:45,465 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 09:17:45,471 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 09:17:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:17:45,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 09:17:45,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:17:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-23 09:17:55,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:17:55,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:17:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878463305] [2023-12-23 09:17:55,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878463305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:17:55,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:17:55,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 09:17:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835675674] [2023-12-23 09:17:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:17:55,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 09:17:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:17:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 09:17:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 09:17:55,654 INFO L87 Difference]: Start difference. First operand 84 states and 134 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-23 09:17:59,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:03,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:09,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:14,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:20,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:26,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:31,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:37,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:43,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:48,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:50,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:52,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:55,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:56,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:18:58,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:01,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:03,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:07,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:11,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:19:11,539 INFO L93 Difference]: Finished difference Result 250 states and 400 transitions. [2023-12-23 09:19:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 09:19:11,587 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 201 [2023-12-23 09:19:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:19:11,590 INFO L225 Difference]: With dead ends: 250 [2023-12-23 09:19:11,590 INFO L226 Difference]: Without dead ends: 167 [2023-12-23 09:19:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 09:19:11,592 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 39 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.8s IncrementalHoareTripleChecker+Time [2023-12-23 09:19:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 255 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 75.8s Time] [2023-12-23 09:19:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-23 09:19:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-12-23 09:19:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 96 states have internal predecessors, (133), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 09:19:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 265 transitions. [2023-12-23 09:19:11,609 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 265 transitions. Word has length 201 [2023-12-23 09:19:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:19:11,610 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 265 transitions. [2023-12-23 09:19:11,610 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, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-23 09:19:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 265 transitions. [2023-12-23 09:19:11,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-23 09:19:11,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:19:11,614 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:11,628 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 09:19:11,814 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 09:19:11,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:19:11,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:19:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2071671812, now seen corresponding path program 1 times [2023-12-23 09:19:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:19:11,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555716658] [2023-12-23 09:19:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:19:11,817 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 09:19:11,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:19:11,819 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 09:19:11,820 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 09:19:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:19:12,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 09:19:12,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:19:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 386 proven. 87 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2023-12-23 09:19:16,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:19:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-23 09:19:19,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:19:19,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555716658] [2023-12-23 09:19:19,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555716658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 09:19:19,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 09:19:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 09:19:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274756445] [2023-12-23 09:19:19,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 09:19:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 09:19:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:19:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 09:19:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 09:19:19,219 INFO L87 Difference]: Start difference. First operand 165 states and 265 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-23 09:19:27,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:19:29,088 INFO L93 Difference]: Finished difference Result 519 states and 809 transitions. [2023-12-23 09:19:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 09:19:29,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 201 [2023-12-23 09:19:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:19:29,098 INFO L225 Difference]: With dead ends: 519 [2023-12-23 09:19:29,098 INFO L226 Difference]: Without dead ends: 355 [2023-12-23 09:19:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 09:19:29,103 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 229 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 110 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-23 09:19:29,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 294 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2023-12-23 09:19:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-23 09:19:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 337. [2023-12-23 09:19:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 196 states have (on average 1.316326530612245) internal successors, (258), 196 states have internal predecessors, (258), 132 states have call successors, (132), 8 states have call predecessors, (132), 8 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-23 09:19:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 522 transitions. [2023-12-23 09:19:29,161 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 522 transitions. Word has length 201 [2023-12-23 09:19:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:19:29,162 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 522 transitions. [2023-12-23 09:19:29,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-23 09:19:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 522 transitions. [2023-12-23 09:19:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-23 09:19:29,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:19:29,166 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:29,179 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 09:19:29,376 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 [2023-12-23 09:19:29,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:19:29,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:19:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1113186853, now seen corresponding path program 1 times [2023-12-23 09:19:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:19:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424269408] [2023-12-23 09:19:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:19:29,382 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 09:19:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:19:29,383 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 09:19:29,385 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 09:19:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:19:29,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 09:19:29,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:19:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 624 proven. 159 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2023-12-23 09:19:38,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:19:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 162 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2023-12-23 09:19:43,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:19:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424269408] [2023-12-23 09:19:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424269408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 09:19:43,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 09:19:43,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-23 09:19:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141341687] [2023-12-23 09:19:43,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 09:19:43,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 09:19:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:19:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 09:19:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-23 09:19:43,250 INFO L87 Difference]: Start difference. First operand 337 states and 522 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-23 09:19:52,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:19:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:19:58,527 INFO L93 Difference]: Finished difference Result 743 states and 1109 transitions. [2023-12-23 09:19:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-23 09:19:58,528 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 202 [2023-12-23 09:19:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:19:58,531 INFO L225 Difference]: With dead ends: 743 [2023-12-23 09:19:58,531 INFO L226 Difference]: Without dead ends: 407 [2023-12-23 09:19:58,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2023-12-23 09:19:58,533 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 346 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-23 09:19:58,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 687 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-23 09:19:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-23 09:19:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 372. [2023-12-23 09:19:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 222 states have internal predecessors, (273), 134 states have call successors, (134), 16 states have call predecessors, (134), 16 states have return successors, (134), 133 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-23 09:19:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 541 transitions. [2023-12-23 09:19:58,567 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 541 transitions. Word has length 202 [2023-12-23 09:19:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:19:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 541 transitions. [2023-12-23 09:19:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-23 09:19:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 541 transitions. [2023-12-23 09:19:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-23 09:19:58,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:19:58,569 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:58,586 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 (5)] Forceful destruction successful, exit code 0 [2023-12-23 09:19:58,784 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 [2023-12-23 09:19:58,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:19:58,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:19:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1111339811, now seen corresponding path program 1 times [2023-12-23 09:19:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:19:58,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542400218] [2023-12-23 09:19:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:19:58,788 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 09:19:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:19:58,789 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 09:19:58,803 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 09:19:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:19:59,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-23 09:19:59,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:20:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 488 proven. 84 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-23 09:20:33,472 INFO L327 TraceCheckSpWp]: Computing backward predicates...