/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_fillercodesize_ps-cn-500_file-40.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 04:46:46,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 04:46:46,366 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 04:46:46,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 04:46:46,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 04:46:46,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 04:46:46,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 04:46:46,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 04:46:46,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 04:46:46,397 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 04:46:46,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 04:46:46,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 04:46:46,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 04:46:46,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 04:46:46,398 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 04:46:46,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 04:46:46,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 04:46:46,398 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 04:46:46,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 04:46:46,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 04:46:46,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 04:46:46,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 04:46:46,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 04:46:46,403 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 04:46:46,408 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 04:46:46,408 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 04:46:46,408 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 04:46:46,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 04:46:46,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 04:46:46,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 04:46:46,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 04:46:46,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 04:46:46,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 04:46:46,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 04:46:46,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:46:46,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 04:46:46,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 04:46:46,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 04:46:46,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 04:46:46,412 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 04:46:46,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 04:46:46,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 04:46:46,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 04:46:46,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 04:46:46,615 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 04:46:46,615 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 04:46:46,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-12-23 04:46:47,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 04:46:47,816 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 04:46:47,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-12-23 04:46:47,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3547baab/504265d64ae74d319187e222c07d5da6/FLAG58dcd3723 [2023-12-23 04:46:47,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3547baab/504265d64ae74d319187e222c07d5da6 [2023-12-23 04:46:47,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 04:46:47,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 04:46:47,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 04:46:47,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 04:46:47,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 04:46:47,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:46:47" (1/1) ... [2023-12-23 04:46:47,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f60b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:47, skipping insertion in model container [2023-12-23 04:46:47,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:46:47" (1/1) ... [2023-12-23 04:46:47,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 04:46:48,004 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_fillercodesize_ps-cn-500_file-40.i[916,929] [2023-12-23 04:46:48,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:46:48,157 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 04:46:48,164 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_fillercodesize_ps-cn-500_file-40.i[916,929] [2023-12-23 04:46:48,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:46:48,229 INFO L206 MainTranslator]: Completed translation [2023-12-23 04:46:48,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48 WrapperNode [2023-12-23 04:46:48,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 04:46:48,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 04:46:48,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 04:46:48,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 04:46:48,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,290 INFO L138 Inliner]: procedures = 27, calls = 110, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 660 [2023-12-23 04:46:48,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 04:46:48,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 04:46:48,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 04:46:48,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 04:46:48,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,349 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 04:46:48,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 04:46:48,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 04:46:48,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 04:46:48,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 04:46:48,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (1/1) ... [2023-12-23 04:46:48,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:46:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 04:46:48,429 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 04:46:48,447 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 04:46:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 04:46:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 04:46:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 04:46:48,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 04:46:48,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 04:46:48,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 04:46:48,587 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 04:46:48,589 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 04:47:26,569 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 04:47:26,615 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 04:47:26,615 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 04:47:26,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:47:26 BoogieIcfgContainer [2023-12-23 04:47:26,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 04:47:26,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 04:47:26,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 04:47:26,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 04:47:26,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:46:47" (1/3) ... [2023-12-23 04:47:26,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c00081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:47:26, skipping insertion in model container [2023-12-23 04:47:26,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:46:48" (2/3) ... [2023-12-23 04:47:26,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c00081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:47:26, skipping insertion in model container [2023-12-23 04:47:26,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:47:26" (3/3) ... [2023-12-23 04:47:26,623 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-40.i [2023-12-23 04:47:26,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 04:47:26,635 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 04:47:26,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 04:47:26,682 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;@66958b4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 04:47:26,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 04:47:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 183 states have (on average 1.6065573770491803) internal successors, (294), 184 states have internal predecessors, (294), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-23 04:47:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-23 04:47:26,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:47:26,718 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:26,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:47:26,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:47:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2108643356, now seen corresponding path program 1 times [2023-12-23 04:47:26,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:47:26,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832633183] [2023-12-23 04:47:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:47:26,735 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 04:47:26,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:47:26,738 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 04:47:26,738 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 04:47:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:47:29,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 04:47:29,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:47:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 18432 trivial. 0 not checked. [2023-12-23 04:47:29,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:47:29,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:47:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832633183] [2023-12-23 04:47:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832633183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:47:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:47:29,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:47:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199215222] [2023-12-23 04:47:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:47:29,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 04:47:29,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:47:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 04:47:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:47:29,261 INFO L87 Difference]: Start difference. First operand has 283 states, 183 states have (on average 1.6065573770491803) internal successors, (294), 184 states have internal predecessors, (294), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 1 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:47:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:47:29,646 INFO L93 Difference]: Finished difference Result 563 states and 1071 transitions. [2023-12-23 04:47:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 04:47:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 1 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 1 states have call successors, (97) Word has length 621 [2023-12-23 04:47:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:47:29,670 INFO L225 Difference]: With dead ends: 563 [2023-12-23 04:47:29,670 INFO L226 Difference]: Without dead ends: 281 [2023-12-23 04:47:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 620 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 04:47:29,676 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:47:29,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 04:47:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-23 04:47:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-23 04:47:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 182 states have (on average 1.5769230769230769) internal successors, (287), 182 states have internal predecessors, (287), 97 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-23 04:47:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 481 transitions. [2023-12-23 04:47:29,726 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 481 transitions. Word has length 621 [2023-12-23 04:47:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:47:29,727 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 481 transitions. [2023-12-23 04:47:29,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 1 states have call successors, (97), 1 states have call predecessors, (97), 2 states have return successors, (97), 2 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:47:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 481 transitions. [2023-12-23 04:47:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-23 04:47:29,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:47:29,738 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:47:29,795 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 04:47:29,960 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 04:47:29,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:47:29,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:47:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1640975526, now seen corresponding path program 1 times [2023-12-23 04:47:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:47:29,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255740200] [2023-12-23 04:47:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:47:29,964 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 04:47:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:47:29,966 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 04:47:29,984 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 04:47:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:47:32,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:47:32,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:47:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8706 proven. 183 refuted. 0 times theorem prover too weak. 9735 trivial. 0 not checked. [2023-12-23 04:47:45,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:47:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 105 proven. 183 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-12-23 04:47:50,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:47:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255740200] [2023-12-23 04:47:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255740200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:47:50,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:47:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 04:47:50,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262015482] [2023-12-23 04:47:50,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:47:50,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 04:47:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:47:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 04:47:50,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:47:50,794 INFO L87 Difference]: Start difference. First operand 281 states and 481 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 04:48:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:48:00,763 INFO L93 Difference]: Finished difference Result 569 states and 968 transitions. [2023-12-23 04:48:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:48:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) Word has length 622 [2023-12-23 04:48:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:48:00,782 INFO L225 Difference]: With dead ends: 569 [2023-12-23 04:48:00,782 INFO L226 Difference]: Without dead ends: 289 [2023-12-23 04:48:00,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1236 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 04:48:00,784 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 271 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:48:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 924 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-23 04:48:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-23 04:48:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2023-12-23 04:48:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-23 04:48:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 482 transitions. [2023-12-23 04:48:00,812 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 482 transitions. Word has length 622 [2023-12-23 04:48:00,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:48:00,814 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 482 transitions. [2023-12-23 04:48:00,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 04:48:00,814 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 482 transitions. [2023-12-23 04:48:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-23 04:48:00,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:48:00,819 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:48:00,874 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 04:48:01,036 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 04:48:01,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:48:01,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:48:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash -45204312, now seen corresponding path program 1 times [2023-12-23 04:48:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:48:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111632239] [2023-12-23 04:48:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:48:01,039 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 04:48:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:48:01,040 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 04:48:01,040 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 04:48:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:48:03,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:48:03,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:48:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:48:23,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:48:23,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:48:23,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111632239] [2023-12-23 04:48:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111632239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:48:23,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:48:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:48:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881202219] [2023-12-23 04:48:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:48:23,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:48:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:48:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:48:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:48:23,704 INFO L87 Difference]: Start difference. First operand 285 states and 482 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:48:25,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:48:27,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:48:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:48:27,382 INFO L93 Difference]: Finished difference Result 853 states and 1444 transitions. [2023-12-23 04:48:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:48:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 622 [2023-12-23 04:48:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:48:27,387 INFO L225 Difference]: With dead ends: 853 [2023-12-23 04:48:27,387 INFO L226 Difference]: Without dead ends: 569 [2023-12-23 04:48:27,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 620 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 04:48:27,389 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 159 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-23 04:48:27,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 943 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-23 04:48:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-23 04:48:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2023-12-23 04:48:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 368 states have (on average 1.5543478260869565) internal successors, (572), 368 states have internal predecessors, (572), 194 states have call successors, (194), 4 states have call predecessors, (194), 4 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-23 04:48:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 960 transitions. [2023-12-23 04:48:27,438 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 960 transitions. Word has length 622 [2023-12-23 04:48:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:48:27,440 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 960 transitions. [2023-12-23 04:48:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:48:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 960 transitions. [2023-12-23 04:48:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-23 04:48:27,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:48:27,444 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:48:27,500 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 04:48:27,660 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 04:48:27,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:48:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:48:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 895301992, now seen corresponding path program 1 times [2023-12-23 04:48:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:48:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453144765] [2023-12-23 04:48:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:48:27,663 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 04:48:27,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:48:27,664 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 04:48:27,664 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 04:48:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:48:29,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:48:29,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:48:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:48:48,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:48:48,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:48:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453144765] [2023-12-23 04:48:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453144765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:48:48,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:48:48,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:48:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885892653] [2023-12-23 04:48:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:48:48,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:48:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:48:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:48:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:48:48,849 INFO L87 Difference]: Start difference. First operand 567 states and 960 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:48:53,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:48:57,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:48:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:48:57,250 INFO L93 Difference]: Finished difference Result 1697 states and 2874 transitions. [2023-12-23 04:48:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:48:57,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 622 [2023-12-23 04:48:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:48:57,311 INFO L225 Difference]: With dead ends: 1697 [2023-12-23 04:48:57,312 INFO L226 Difference]: Without dead ends: 1131 [2023-12-23 04:48:57,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 620 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 04:48:57,314 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 197 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:48:57,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1087 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2023-12-23 04:48:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-12-23 04:48:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1129. [2023-12-23 04:48:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 732 states have (on average 1.546448087431694) internal successors, (1132), 732 states have internal predecessors, (1132), 388 states have call successors, (388), 8 states have call predecessors, (388), 8 states have return successors, (388), 388 states have call predecessors, (388), 388 states have call successors, (388) [2023-12-23 04:48:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1908 transitions. [2023-12-23 04:48:57,415 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1908 transitions. Word has length 622 [2023-12-23 04:48:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:48:57,415 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1908 transitions. [2023-12-23 04:48:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:48:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1908 transitions. [2023-12-23 04:48:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:48:57,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:48:57,420 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:48:57,477 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 04:48:57,636 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 04:48:57,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:48:57,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:48:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 30084515, now seen corresponding path program 1 times [2023-12-23 04:48:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:48:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804467083] [2023-12-23 04:48:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:48:57,638 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 04:48:57,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:48:57,639 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 04:48:57,640 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 04:49:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:49:00,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:49:00,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:49:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8076 proven. 198 refuted. 0 times theorem prover too weak. 10350 trivial. 0 not checked. [2023-12-23 04:49:15,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:49:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 90 proven. 198 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-12-23 04:49:21,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:49:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804467083] [2023-12-23 04:49:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804467083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:49:21,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:49:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 04:49:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75859184] [2023-12-23 04:49:21,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:49:21,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 04:49:21,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:49:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 04:49:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:49:21,054 INFO L87 Difference]: Start difference. First operand 1129 states and 1908 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-12-23 04:49:34,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:49:36,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:49:38,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:49:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:49:38,938 INFO L93 Difference]: Finished difference Result 2287 states and 3839 transitions. [2023-12-23 04:49:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:49:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) Word has length 623 [2023-12-23 04:49:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:49:38,963 INFO L225 Difference]: With dead ends: 2287 [2023-12-23 04:49:38,963 INFO L226 Difference]: Without dead ends: 1159 [2023-12-23 04:49:38,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1251 GetRequests, 1238 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:49:38,967 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 735 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-23 04:49:38,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 893 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2023-12-23 04:49:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-12-23 04:49:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 573. [2023-12-23 04:49:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 372 states have (on average 1.521505376344086) internal successors, (566), 372 states have internal predecessors, (566), 194 states have call successors, (194), 6 states have call predecessors, (194), 6 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-12-23 04:49:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 954 transitions. [2023-12-23 04:49:39,054 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 954 transitions. Word has length 623 [2023-12-23 04:49:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:49:39,055 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 954 transitions. [2023-12-23 04:49:39,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 2 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 2 states have call predecessors, (164), 2 states have call successors, (164) [2023-12-23 04:49:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 954 transitions. [2023-12-23 04:49:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-23 04:49:39,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:49:39,059 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:39,120 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 (6)] Forceful destruction successful, exit code 0 [2023-12-23 04:49:39,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 04:49:39,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:49:39,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:49:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1190738539, now seen corresponding path program 1 times [2023-12-23 04:49:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:49:39,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253038800] [2023-12-23 04:49:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:49:39,279 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 04:49:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:49:39,281 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 04:49:39,308 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 04:49:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:49:41,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:49:41,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:49:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8652 proven. 102 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2023-12-23 04:49:49,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:49:51,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:49:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253038800] [2023-12-23 04:49:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253038800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:49:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1745051950] [2023-12-23 04:49:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:49:51,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:49:51,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:49:51,322 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 04:49:51,322 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 04:49:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:49:52,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:49:52,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:49:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:49:55,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:49:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1745051950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:49:55,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:49:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 04:49:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889783625] [2023-12-23 04:49:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:49:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:49:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:49:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:49:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:49:55,384 INFO L87 Difference]: Start difference. First operand 573 states and 954 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:49:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:49:56,328 INFO L93 Difference]: Finished difference Result 1449 states and 2436 transitions. [2023-12-23 04:49:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:49:56,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 624 [2023-12-23 04:49:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:49:56,333 INFO L225 Difference]: With dead ends: 1449 [2023-12-23 04:49:56,334 INFO L226 Difference]: Without dead ends: 877 [2023-12-23 04:49:56,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:49:56,337 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 201 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 04:49:56,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 973 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 04:49:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-23 04:49:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2023-12-23 04:49:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 634 states have (on average 1.6025236593059937) internal successors, (1016), 636 states have internal predecessors, (1016), 230 states have call successors, (230), 8 states have call predecessors, (230), 8 states have return successors, (230), 228 states have call predecessors, (230), 230 states have call successors, (230) [2023-12-23 04:49:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1476 transitions. [2023-12-23 04:49:56,398 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1476 transitions. Word has length 624 [2023-12-23 04:49:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:49:56,399 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1476 transitions. [2023-12-23 04:49:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:49:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1476 transitions. [2023-12-23 04:49:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-23 04:49:56,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:49:56,404 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:56,466 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 04:49:56,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 04:49:56,816 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 04:49:56,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:49:56,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:49:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash 498205203, now seen corresponding path program 1 times [2023-12-23 04:49:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:49:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092904416] [2023-12-23 04:49:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:49:56,818 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 04:49:56,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:49:56,820 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 04:49:56,836 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 04:49:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:49:59,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:49:59,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:50:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8652 proven. 102 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2023-12-23 04:50:07,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:50:08,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:50:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092904416] [2023-12-23 04:50:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092904416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:50:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1848175690] [2023-12-23 04:50:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:50:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:50:08,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:50:08,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:50:08,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 04:50:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:50:10,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:50:10,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:50:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:50:11,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:50:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1848175690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:50:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:50:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 04:50:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080999122] [2023-12-23 04:50:11,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:50:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:50:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:50:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:50:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:50:11,650 INFO L87 Difference]: Start difference. First operand 873 states and 1476 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:50:12,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:50:12,670 INFO L93 Difference]: Finished difference Result 2513 states and 4234 transitions. [2023-12-23 04:50:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:50:12,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 624 [2023-12-23 04:50:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:50:12,678 INFO L225 Difference]: With dead ends: 2513 [2023-12-23 04:50:12,679 INFO L226 Difference]: Without dead ends: 1641 [2023-12-23 04:50:12,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:50:12,682 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 382 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 04:50:12,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1215 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 04:50:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-23 04:50:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1101. [2023-12-23 04:50:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 862 states have (on average 1.6589327146171693) internal successors, (1430), 864 states have internal predecessors, (1430), 230 states have call successors, (230), 8 states have call predecessors, (230), 8 states have return successors, (230), 228 states have call predecessors, (230), 230 states have call successors, (230) [2023-12-23 04:50:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1890 transitions. [2023-12-23 04:50:12,781 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1890 transitions. Word has length 624 [2023-12-23 04:50:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:50:12,782 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1890 transitions. [2023-12-23 04:50:12,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:50:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1890 transitions. [2023-12-23 04:50:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-23 04:50:12,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:50:12,786 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:12,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 04:50:13,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-23 04:50:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:50:13,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:50:13,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:50:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1495939503, now seen corresponding path program 1 times [2023-12-23 04:50:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:50:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940917641] [2023-12-23 04:50:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:50:13,194 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 04:50:13,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:50:13,195 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:50:13,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-23 04:50:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:50:15,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:50:15,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:50:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8652 proven. 102 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2023-12-23 04:50:23,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:50:24,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:50:24,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940917641] [2023-12-23 04:50:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940917641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:50:24,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936916556] [2023-12-23 04:50:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:50:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:50:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:50:24,816 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:50:24,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-23 04:50:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:50:30,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:50:30,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:50:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:50:50,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:50:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936916556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:50:50,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:50:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-23 04:50:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303042894] [2023-12-23 04:50:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:50:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:50:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:50:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:50:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:50:50,750 INFO L87 Difference]: Start difference. First operand 1101 states and 1890 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:50:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:50:52,056 INFO L93 Difference]: Finished difference Result 3301 states and 5668 transitions. [2023-12-23 04:50:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:50:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 624 [2023-12-23 04:50:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:50:52,070 INFO L225 Difference]: With dead ends: 3301 [2023-12-23 04:50:52,071 INFO L226 Difference]: Without dead ends: 2201 [2023-12-23 04:50:52,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:50:52,076 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 167 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:50:52,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 935 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-23 04:50:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2023-12-23 04:50:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2191. [2023-12-23 04:50:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1714 states have (on average 1.6534422403733955) internal successors, (2834), 1718 states have internal predecessors, (2834), 460 states have call successors, (460), 16 states have call predecessors, (460), 16 states have return successors, (460), 456 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-23 04:50:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3754 transitions. [2023-12-23 04:50:52,213 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3754 transitions. Word has length 624 [2023-12-23 04:50:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:50:52,214 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 3754 transitions. [2023-12-23 04:50:52,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:50:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3754 transitions. [2023-12-23 04:50:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-23 04:50:52,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:50:52,219 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:52,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-23 04:50:52,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-23 04:50:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:50:52,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:50:52,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:50:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1518229824, now seen corresponding path program 1 times [2023-12-23 04:50:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:50:52,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667492624] [2023-12-23 04:50:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:50:52,641 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 04:50:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:50:52,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:50:52,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-23 04:50:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:50:55,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:50:55,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:51:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8652 proven. 102 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2023-12-23 04:51:02,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:51:04,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:51:04,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667492624] [2023-12-23 04:51:04,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667492624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:51:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816070392] [2023-12-23 04:51:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:51:04,270 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:51:04,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:51:04,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:51:04,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-23 04:51:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:51:12,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:51:12,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:51:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 8652 proven. 102 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2023-12-23 04:51:19,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:51:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [816070392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:51:20,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:51:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 04:51:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499405337] [2023-12-23 04:51:20,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:51:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:51:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:51:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:51:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-23 04:51:20,661 INFO L87 Difference]: Start difference. First operand 2191 states and 3754 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-23 04:51:35,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:51:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:51:35,837 INFO L93 Difference]: Finished difference Result 4389 states and 7487 transitions. [2023-12-23 04:51:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 04:51:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 625 [2023-12-23 04:51:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:51:35,859 INFO L225 Difference]: With dead ends: 4389 [2023-12-23 04:51:35,859 INFO L226 Difference]: Without dead ends: 2199 [2023-12-23 04:51:35,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 1415 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 04:51:35,866 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 292 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:51:35,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 865 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2023-12-23 04:51:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2023-12-23 04:51:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2175. [2023-12-23 04:51:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1694 states have (on average 1.6233766233766234) internal successors, (2750), 1698 states have internal predecessors, (2750), 460 states have call successors, (460), 20 states have call predecessors, (460), 20 states have return successors, (460), 456 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-23 04:51:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3670 transitions. [2023-12-23 04:51:35,992 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3670 transitions. Word has length 625 [2023-12-23 04:51:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:51:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3670 transitions. [2023-12-23 04:51:35,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (97), 2 states have call predecessors, (97), 3 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-23 04:51:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3670 transitions. [2023-12-23 04:51:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-23 04:51:35,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:51:35,998 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:36,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-23 04:51:36,285 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 (13)] Forceful destruction successful, exit code 0 [2023-12-23 04:51:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /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 04:51:36,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:51:36,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:51:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash 647274312, now seen corresponding path program 1 times [2023-12-23 04:51:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:51:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047835636] [2023-12-23 04:51:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:51:36,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:51:36,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:51:36,419 INFO L229 MonitoredProcess]: Starting monitored process 15 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 04:51:36,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-23 04:51:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:51:38,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:51:38,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:51:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 1036 proven. 6 refuted. 0 times theorem prover too weak. 17582 trivial. 0 not checked. [2023-12-23 04:51:41,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:51:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 282 proven. 6 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-12-23 04:51:44,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:51:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047835636] [2023-12-23 04:51:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047835636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:51:44,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:51:44,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 04:51:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611642870] [2023-12-23 04:51:44,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:51:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 04:51:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:51:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 04:51:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:51:44,697 INFO L87 Difference]: Start difference. First operand 2175 states and 3670 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 04:51:55,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:51:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:51:55,492 INFO L93 Difference]: Finished difference Result 4397 states and 7383 transitions. [2023-12-23 04:51:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:51:55,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 625 [2023-12-23 04:51:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:51:55,514 INFO L225 Difference]: With dead ends: 4397 [2023-12-23 04:51:55,514 INFO L226 Difference]: Without dead ends: 2223 [2023-12-23 04:51:55,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1242 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 04:51:55,517 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 516 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:51:55,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 877 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-23 04:51:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2023-12-23 04:51:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2191. [2023-12-23 04:51:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1706 states have (on average 1.6049237983587339) internal successors, (2738), 1710 states have internal predecessors, (2738), 460 states have call successors, (460), 24 states have call predecessors, (460), 24 states have return successors, (460), 456 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-23 04:51:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 3658 transitions. [2023-12-23 04:51:55,633 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 3658 transitions. Word has length 625 [2023-12-23 04:51:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:51:55,633 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 3658 transitions. [2023-12-23 04:51:55,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-12-23 04:51:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 3658 transitions. [2023-12-23 04:51:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-23 04:51:55,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:51:55,653 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:55,705 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 (15)] Forceful destruction successful, exit code 0 [2023-12-23 04:51:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 04:51:55,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:51:55,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:51:55,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1450546680, now seen corresponding path program 1 times [2023-12-23 04:51:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:51:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53866796] [2023-12-23 04:51:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:51:55,871 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 04:51:55,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:51:55,872 INFO L229 MonitoredProcess]: Starting monitored process 16 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 04:51:55,884 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 (16)] Waiting until timeout for monitored process [2023-12-23 04:51:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:51:58,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:51:58,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:52:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 2928 proven. 264 refuted. 0 times theorem prover too weak. 15432 trivial. 0 not checked. [2023-12-23 04:52:19,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:52:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 24 proven. 264 refuted. 0 times theorem prover too weak. 18336 trivial. 0 not checked. [2023-12-23 04:52:28,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:52:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53866796] [2023-12-23 04:52:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53866796] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:52:28,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:52:28,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 04:52:28,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585958190] [2023-12-23 04:52:28,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:52:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 04:52:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:52:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 04:52:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:52:28,551 INFO L87 Difference]: Start difference. First operand 2191 states and 3658 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-12-23 04:52:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:52:51,554 INFO L93 Difference]: Finished difference Result 6699 states and 11052 transitions. [2023-12-23 04:52:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 04:52:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) Word has length 625 [2023-12-23 04:52:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:52:51,569 INFO L225 Difference]: With dead ends: 6699 [2023-12-23 04:52:51,570 INFO L226 Difference]: Without dead ends: 4509 [2023-12-23 04:52:51,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1242 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 04:52:51,575 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 435 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-23 04:52:51,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 2032 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-23 04:52:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2023-12-23 04:52:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 2207. [2023-12-23 04:52:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1714 states have (on average 1.5834305717619603) internal successors, (2714), 1718 states have internal predecessors, (2714), 460 states have call successors, (460), 32 states have call predecessors, (460), 32 states have return successors, (460), 456 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-23 04:52:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3634 transitions. [2023-12-23 04:52:51,832 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3634 transitions. Word has length 625 [2023-12-23 04:52:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:52:51,833 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 3634 transitions. [2023-12-23 04:52:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-12-23 04:52:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3634 transitions. [2023-12-23 04:52:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-23 04:52:51,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:52:51,839 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:51,897 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 (16)] Forceful destruction successful, exit code 0 [2023-12-23 04:52:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 04:52:52,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:52:52,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:52:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1843573690, now seen corresponding path program 1 times [2023-12-23 04:52:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:52:52,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106436917] [2023-12-23 04:52:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:52:52,062 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 04:52:52,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:52:52,063 INFO L229 MonitoredProcess]: Starting monitored process 17 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 04:52:52,068 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 (17)] Waiting until timeout for monitored process [2023-12-23 04:52:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:52:54,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:52:54,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:52:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18624 trivial. 0 not checked. [2023-12-23 04:52:55,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:52:55,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:52:55,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106436917] [2023-12-23 04:52:55,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106436917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:52:55,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:52:55,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-23 04:52:55,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194364425] [2023-12-23 04:52:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:52:55,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:52:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:52:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:52:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 04:52:55,607 INFO L87 Difference]: Start difference. First operand 2207 states and 3634 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:53:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:53:05,290 INFO L93 Difference]: Finished difference Result 7793 states and 12880 transitions. [2023-12-23 04:53:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 04:53:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) Word has length 625 [2023-12-23 04:53:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:53:05,308 INFO L225 Difference]: With dead ends: 7793 [2023-12-23 04:53:05,308 INFO L226 Difference]: Without dead ends: 5587 [2023-12-23 04:53:05,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:53:05,314 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1139 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:53:05,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2233 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-23 04:53:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-12-23 04:53:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 2423. [2023-12-23 04:53:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1819 states have (on average 1.5497526113249038) internal successors, (2819), 1824 states have internal predecessors, (2819), 557 states have call successors, (557), 46 states have call predecessors, (557), 46 states have return successors, (557), 552 states have call predecessors, (557), 557 states have call successors, (557) [2023-12-23 04:53:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3933 transitions. [2023-12-23 04:53:05,600 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3933 transitions. Word has length 625 [2023-12-23 04:53:05,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:53:05,600 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3933 transitions. [2023-12-23 04:53:05,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (97), 1 states have call predecessors, (97), 1 states have return successors, (97), 1 states have call predecessors, (97), 1 states have call successors, (97) [2023-12-23 04:53:05,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3933 transitions. [2023-12-23 04:53:05,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-23 04:53:05,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:53:05,607 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:05,675 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 (17)] Forceful destruction successful, exit code 0 [2023-12-23 04:53:05,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 04:53:05,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:53:05,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:53:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1843514108, now seen corresponding path program 1 times [2023-12-23 04:53:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:53:05,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781206975] [2023-12-23 04:53:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:53:05,824 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 04:53:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:53:05,826 INFO L229 MonitoredProcess]: Starting monitored process 18 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 04:53:05,827 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 (18)] Waiting until timeout for monitored process [2023-12-23 04:53:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:53:08,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-23 04:53:08,740 INFO L285 TraceCheckSpWp]: Computing forward predicates...