/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 11:20:52,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 11:20:52,240 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 11:20:52,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 11:20:52,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 11:20:52,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 11:20:52,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 11:20:52,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 11:20:52,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 11:20:52,269 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 11:20:52,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 11:20:52,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 11:20:52,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 11:20:52,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 11:20:52,271 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 11:20:52,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 11:20:52,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 11:20:52,272 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 11:20:52,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 11:20:52,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 11:20:52,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 11:20:52,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 11:20:52,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 11:20:52,273 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 11:20:52,273 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 11:20:52,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 11:20:52,274 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 11:20:52,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 11:20:52,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 11:20:52,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 11:20:52,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 11:20:52,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 11:20:52,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 11:20:52,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 11:20:52,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 11:20:52,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 11:20:52,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 11:20:52,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 11:20:52,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 11:20:52,277 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 11:20:52,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 11:20:52,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 11:20:52,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 11:20:52,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 11:20:52,455 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 11:20:52,455 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 11:20:52,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i [2023-12-23 11:20:53,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 11:20:53,592 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 11:20:53,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i [2023-12-23 11:20:53,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d5d2bf9/b7bb1c344142449e831b42d0c064a319/FLAGe67dbd076 [2023-12-23 11:20:53,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d5d2bf9/b7bb1c344142449e831b42d0c064a319 [2023-12-23 11:20:53,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 11:20:53,610 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 11:20:53,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 11:20:53,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 11:20:53,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 11:20:53,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6034953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53, skipping insertion in model container [2023-12-23 11:20:53,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 11:20:53,722 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i[919,932] [2023-12-23 11:20:53,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 11:20:53,779 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 11:20:53,788 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i[919,932] [2023-12-23 11:20:53,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 11:20:53,825 INFO L206 MainTranslator]: Completed translation [2023-12-23 11:20:53,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53 WrapperNode [2023-12-23 11:20:53,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 11:20:53,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 11:20:53,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 11:20:53,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 11:20:53,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,862 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158 [2023-12-23 11:20:53,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 11:20:53,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 11:20:53,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 11:20:53,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 11:20:53,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,877 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,895 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 11:20:53,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 11:20:53,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 11:20:53,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 11:20:53,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 11:20:53,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (1/1) ... [2023-12-23 11:20:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 11:20:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 11:20:53,978 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 11:20:53,980 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 11:20:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 11:20:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 11:20:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 11:20:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 11:20:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 11:20:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 11:20:54,054 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 11:20:54,056 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 11:20:57,246 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 11:20:57,291 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 11:20:57,291 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 11:20:57,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:20:57 BoogieIcfgContainer [2023-12-23 11:20:57,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 11:20:57,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 11:20:57,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 11:20:57,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 11:20:57,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:20:53" (1/3) ... [2023-12-23 11:20:57,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2841e981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:20:57, skipping insertion in model container [2023-12-23 11:20:57,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:20:53" (2/3) ... [2023-12-23 11:20:57,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2841e981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:20:57, skipping insertion in model container [2023-12-23 11:20:57,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:20:57" (3/3) ... [2023-12-23 11:20:57,298 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-83.i [2023-12-23 11:20:57,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 11:20:57,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 11:20:57,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 11:20:57,354 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;@42a4e93a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 11:20:57,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 11:20:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 42 states have internal predecessors, (64), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-23 11:20:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-23 11:20:57,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 11:20:57,377 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:57,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 11:20:57,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 11:20:57,401 INFO L85 PathProgramCache]: Analyzing trace with hash -506872327, now seen corresponding path program 1 times [2023-12-23 11:20:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 11:20:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550102074] [2023-12-23 11:20:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:20:57,410 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 11:20:57,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 11:20:57,416 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 11:20:57,440 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 11:20:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:20:57,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 11:20:57,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:20:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2023-12-23 11:20:57,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 11:20:57,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 11:20:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550102074] [2023-12-23 11:20:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550102074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 11:20:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 11:20:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 11:20:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733516975] [2023-12-23 11:20:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 11:20:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 11:20:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 11:20:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 11:20:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 11:20:57,941 INFO L87 Difference]: Start difference. First operand has 65 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 42 states have internal predecessors, (64), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-23 11:20:59,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 11:20:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 11:20:59,218 INFO L93 Difference]: Finished difference Result 126 states and 229 transitions. [2023-12-23 11:20:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 11:20:59,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 136 [2023-12-23 11:20:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 11:20:59,266 INFO L225 Difference]: With dead ends: 126 [2023-12-23 11:20:59,266 INFO L226 Difference]: Without dead ends: 62 [2023-12-23 11:20:59,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 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 11:20:59,270 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 11:20:59,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 11:20:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-23 11:20:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-23 11:20:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-23 11:20:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 97 transitions. [2023-12-23 11:20:59,300 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 97 transitions. Word has length 136 [2023-12-23 11:20:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 11:20:59,300 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 97 transitions. [2023-12-23 11:20:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-23 11:20:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2023-12-23 11:20:59,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-23 11:20:59,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 11:20:59,304 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:59,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 11:20:59,507 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 11:20:59,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 11:20:59,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 11:20:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash 79948607, now seen corresponding path program 1 times [2023-12-23 11:20:59,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 11:20:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549717586] [2023-12-23 11:20:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:20:59,509 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 11:20:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 11:20:59,510 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 11:20:59,536 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 11:20:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:20:59,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 11:20:59,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 476 proven. 72 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-23 11:21:00,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 11:21:01,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 11:21:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549717586] [2023-12-23 11:21:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549717586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 11:21:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [641949118] [2023-12-23 11:21:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:01,155 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 11:21:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 11:21:01,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 11:21:01,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 11:21:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:01,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 11:21:01,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-23 11:21:01,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 11:21:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [641949118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 11:21:01,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 11:21:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-23 11:21:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475584972] [2023-12-23 11:21:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 11:21:01,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 11:21:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 11:21:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 11:21:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 11:21:01,559 INFO L87 Difference]: Start difference. First operand 62 states and 97 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-23 11:21:02,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 11:21:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 11:21:03,023 INFO L93 Difference]: Finished difference Result 145 states and 227 transitions. [2023-12-23 11:21:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 11:21:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 136 [2023-12-23 11:21:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 11:21:03,070 INFO L225 Difference]: With dead ends: 145 [2023-12-23 11:21:03,070 INFO L226 Difference]: Without dead ends: 84 [2023-12-23 11:21:03,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-23 11:21:03,072 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 11:21:03,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 176 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 11:21:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-23 11:21:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-12-23 11:21:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-23 11:21:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 114 transitions. [2023-12-23 11:21:03,080 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 114 transitions. Word has length 136 [2023-12-23 11:21:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 11:21:03,081 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 114 transitions. [2023-12-23 11:21:03,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-23 11:21:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 114 transitions. [2023-12-23 11:21:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-23 11:21:03,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 11:21:03,083 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:03,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 11:21:03,298 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 11:21:03,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 11:21:03,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 11:21:03,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 11:21:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -729398019, now seen corresponding path program 1 times [2023-12-23 11:21:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 11:21:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436321258] [2023-12-23 11:21:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:03,491 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 11:21:03,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 11:21:03,492 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 11:21:03,492 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 11:21:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:03,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 11:21:03,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 476 proven. 72 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-23 11:21:04,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 11:21:04,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 11:21:04,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436321258] [2023-12-23 11:21:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436321258] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 11:21:04,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [968819927] [2023-12-23 11:21:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:04,998 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 11:21:04,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 11:21:05,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 11:21:05,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 11:21:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:06,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 11:21:06,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 476 proven. 72 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-23 11:21:06,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 11:21:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [968819927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 11:21:06,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 11:21:06,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-23 11:21:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478658539] [2023-12-23 11:21:06,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 11:21:06,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 11:21:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 11:21:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 11:21:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-23 11:21:06,858 INFO L87 Difference]: Start difference. First operand 73 states and 114 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-23 11:21:09,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 11:21:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 11:21:09,372 INFO L93 Difference]: Finished difference Result 157 states and 237 transitions. [2023-12-23 11:21:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-23 11:21:09,418 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), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 136 [2023-12-23 11:21:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 11:21:09,421 INFO L225 Difference]: With dead ends: 157 [2023-12-23 11:21:09,421 INFO L226 Difference]: Without dead ends: 85 [2023-12-23 11:21:09,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-23 11:21:09,422 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 81 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-23 11:21:09,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 170 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-23 11:21:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-23 11:21:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2023-12-23 11:21:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-23 11:21:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2023-12-23 11:21:09,430 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 136 [2023-12-23 11:21:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 11:21:09,431 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2023-12-23 11:21:09,431 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), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-23 11:21:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2023-12-23 11:21:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-23 11:21:09,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 11:21:09,433 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:09,445 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 11:21:09,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 11:21:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 11:21:09,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 11:21:09,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 11:21:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1122425029, now seen corresponding path program 1 times [2023-12-23 11:21:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 11:21:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342207716] [2023-12-23 11:21:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:09,842 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 11:21:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 11:21:09,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 11:21:09,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 11:21:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:10,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 11:21:10,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 362 proven. 93 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-23 11:21:11,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 11:21:11,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 11:21:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342207716] [2023-12-23 11:21:11,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342207716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 11:21:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235597887] [2023-12-23 11:21:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:11,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 11:21:11,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 11:21:11,956 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 11:21:11,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 11:21:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:13,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 11:21:13,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:21:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 362 proven. 93 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-12-23 11:21:13,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 11:21:14,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [235597887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 11:21:14,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 11:21:14,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-23 11:21:14,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876486409] [2023-12-23 11:21:14,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 11:21:14,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 11:21:14,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 11:21:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 11:21:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-23 11:21:14,623 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-23 11:21:16,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 11:21:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 11:21:16,554 INFO L93 Difference]: Finished difference Result 170 states and 238 transitions. [2023-12-23 11:21:16,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 11:21:16,597 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), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 136 [2023-12-23 11:21:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 11:21:16,598 INFO L225 Difference]: With dead ends: 170 [2023-12-23 11:21:16,598 INFO L226 Difference]: Without dead ends: 90 [2023-12-23 11:21:16,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-12-23 11:21:16,599 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 51 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 11:21:16,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 144 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 11:21:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-23 11:21:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2023-12-23 11:21:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 59 states have internal predecessors, (72), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-23 11:21:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2023-12-23 11:21:16,605 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 136 [2023-12-23 11:21:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 11:21:16,606 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2023-12-23 11:21:16,606 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), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-23 11:21:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2023-12-23 11:21:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-23 11:21:16,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 11:21:16,607 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:16,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 11:21:16,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-23 11:21:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 11:21:17,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 11:21:17,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 11:21:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1124272071, now seen corresponding path program 1 times [2023-12-23 11:21:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 11:21:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125096870] [2023-12-23 11:21:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 11:21:17,021 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 11:21:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 11:21:17,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 11:21:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 11:21:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 11:21:17,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 11:21:17,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 11:22:09,460 WARN L293 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:22:25,095 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:23:51,332 WARN L293 SmtUtils]: Spent 43.87s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 11:23:57,827 WARN L293 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:24:13,649 WARN L293 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:24:42,244 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:25:51,841 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:26:04,691 WARN L293 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:26:40,723 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 11:27:49,680 WARN L293 SmtUtils]: Spent 39.25s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)