/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-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:32:56,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:32:56,122 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 05:32:56,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:32:56,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:32:56,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:32:56,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:32:56,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:32:56,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:32:56,157 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:32:56,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:32:56,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:32:56,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:32:56,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:32:56,159 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:32:56,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:32:56,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:32:56,160 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:32:56,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:32:56,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:32:56,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:32:56,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:32:56,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:32:56,161 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:32:56,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:32:56,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:32:56,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:32:56,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:32:56,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:32:56,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:32:56,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:32:56,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:32:56,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:32:56,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:32:56,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:32:56,165 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:32:56,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:32:56,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:32:56,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:32:56,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:32:56,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:32:56,377 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:32:56,378 INFO L431 ainManager$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-89.i [2023-12-23 05:32:57,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:32:57,584 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:32:57,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-12-23 05:32:57,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64afe44c1/d19e7b32cff241c0a08250206f2a4051/FLAG37366547f [2023-12-23 05:32:57,608 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64afe44c1/d19e7b32cff241c0a08250206f2a4051 [2023-12-23 05:32:57,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:32:57,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:32:57,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:32:57,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:32:57,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:32:57,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:32:57" (1/1) ... [2023-12-23 05:32:57,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0cf766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:57, skipping insertion in model container [2023-12-23 05:32:57,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:32:57" (1/1) ... [2023-12-23 05:32:57,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:32:57,783 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-89.i[916,929] [2023-12-23 05:32:57,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:32:57,985 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:32:57,994 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-89.i[916,929] [2023-12-23 05:32:58,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:32:58,104 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:32:58,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58 WrapperNode [2023-12-23 05:32:58,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:32:58,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:32:58,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:32:58,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:32:58,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,188 INFO L138 Inliner]: procedures = 27, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 657 [2023-12-23 05:32:58,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:32:58,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:32:58,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:32:58,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:32:58,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,224 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 05:32:58,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:32:58,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:32:58,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:32:58,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:32:58,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (1/1) ... [2023-12-23 05:32:58,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:32:58,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:32:58,323 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 05:32:58,342 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 05:32:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:32:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:32:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:32:58,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:32:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:32:58,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:32:58,488 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:32:58,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:33:35,081 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:33:35,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:33:35,125 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:33:35,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:33:35 BoogieIcfgContainer [2023-12-23 05:33:35,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:33:35,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:33:35,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:33:35,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:33:35,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:32:57" (1/3) ... [2023-12-23 05:33:35,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caafff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:33:35, skipping insertion in model container [2023-12-23 05:33:35,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:32:58" (2/3) ... [2023-12-23 05:33:35,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caafff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:33:35, skipping insertion in model container [2023-12-23 05:33:35,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:33:35" (3/3) ... [2023-12-23 05:33:35,132 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-89.i [2023-12-23 05:33:35,144 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:33:35,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:33:35,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:33:35,183 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;@102ab4f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:33:35,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:33:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 182 states have (on average 1.6153846153846154) internal successors, (294), 183 states have internal predecessors, (294), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-23 05:33:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-23 05:33:35,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:33:35,225 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:35,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:33:35,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:33:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1280564404, now seen corresponding path program 1 times [2023-12-23 05:33:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:33:35,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412936736] [2023-12-23 05:33:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:35,249 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 05:33:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:33:35,251 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 05:33:35,285 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 05:33:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:33:38,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 05:33:38,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:33:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8768 proven. 0 refuted. 0 times theorem prover too weak. 9092 trivial. 0 not checked. [2023-12-23 05:33:38,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:33:38,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:33:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412936736] [2023-12-23 05:33:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412936736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:33:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:33:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:33:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796257335] [2023-12-23 05:33:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:33:38,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 05:33:38,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:33:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 05:33:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:33:38,252 INFO L87 Difference]: Start difference. First operand has 280 states, 182 states have (on average 1.6153846153846154) internal successors, (294), 183 states have internal predecessors, (294), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 05:33:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:33:38,584 INFO L93 Difference]: Finished difference Result 554 states and 1055 transitions. [2023-12-23 05:33:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 05:33:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 606 [2023-12-23 05:33:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:33:38,608 INFO L225 Difference]: With dead ends: 554 [2023-12-23 05:33:38,608 INFO L226 Difference]: Without dead ends: 275 [2023-12-23 05:33:38,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 605 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 05:33:38,616 INFO L413 NwaCegarLoop]: 467 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, 467 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 05:33:38,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 05:33:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-23 05:33:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2023-12-23 05:33:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 178 states have (on average 1.5730337078651686) internal successors, (280), 178 states have internal predecessors, (280), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-23 05:33:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 470 transitions. [2023-12-23 05:33:38,680 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 470 transitions. Word has length 606 [2023-12-23 05:33:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:33:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 470 transitions. [2023-12-23 05:33:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 05:33:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 470 transitions. [2023-12-23 05:33:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-23 05:33:38,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:33:38,696 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:38,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 05:33:38,904 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 05:33:38,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:33:38,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:33:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1747018504, now seen corresponding path program 1 times [2023-12-23 05:33:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:33:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541534053] [2023-12-23 05:33:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:38,908 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 05:33:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:33:38,910 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 05:33:38,929 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 05:33:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:33:42,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:33:42,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:33:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:33:55,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:33:55,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:33:55,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541534053] [2023-12-23 05:33:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541534053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:33:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:33:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:33:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485370657] [2023-12-23 05:33:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:33:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:33:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:33:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:33:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:33:55,895 INFO L87 Difference]: Start difference. First operand 275 states and 470 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:33:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:33:57,354 INFO L93 Difference]: Finished difference Result 820 states and 1402 transitions. [2023-12-23 05:33:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:33:57,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 606 [2023-12-23 05:33:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:33:57,360 INFO L225 Difference]: With dead ends: 820 [2023-12-23 05:33:57,360 INFO L226 Difference]: Without dead ends: 546 [2023-12-23 05:33:57,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 604 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 05:33:57,362 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 203 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:33:57,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 05:33:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-23 05:33:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 543. [2023-12-23 05:33:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 350 states have (on average 1.5571428571428572) internal successors, (545), 350 states have internal predecessors, (545), 190 states have call successors, (190), 2 states have call predecessors, (190), 2 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-23 05:33:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 925 transitions. [2023-12-23 05:33:57,438 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 925 transitions. Word has length 606 [2023-12-23 05:33:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:33:57,441 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 925 transitions. [2023-12-23 05:33:57,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:33:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 925 transitions. [2023-12-23 05:33:57,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:33:57,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:33:57,467 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:57,520 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 05:33:57,667 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 05:33:57,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:33:57,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:33:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1972655933, now seen corresponding path program 1 times [2023-12-23 05:33:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:33:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491875591] [2023-12-23 05:33:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:33:57,670 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 05:33:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:33:57,671 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 05:33:57,672 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 05:34:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:00,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:34:00,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:34:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:34:23,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:34:24,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:34:24,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491875591] [2023-12-23 05:34:24,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491875591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:34:24,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [411610660] [2023-12-23 05:34:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:34:24,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:34:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:34:24,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:34:24,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 05:34:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:25,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:34:25,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:34:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:34:40,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:34:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [411610660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:34:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:34:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-23 05:34:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836255934] [2023-12-23 05:34:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:34:40,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:34:40,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:34:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:34:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:34:40,578 INFO L87 Difference]: Start difference. First operand 543 states and 925 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:34:41,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:34:41,180 INFO L93 Difference]: Finished difference Result 1623 states and 2765 transitions. [2023-12-23 05:34:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:34:41,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:34:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:34:41,193 INFO L225 Difference]: With dead ends: 1623 [2023-12-23 05:34:41,194 INFO L226 Difference]: Without dead ends: 1081 [2023-12-23 05:34:41,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:34:41,199 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 142 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:34:41,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 921 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 05:34:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2023-12-23 05:34:41,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1075. [2023-12-23 05:34:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 690 states have (on average 1.5449275362318842) internal successors, (1066), 690 states have internal predecessors, (1066), 380 states have call successors, (380), 4 states have call predecessors, (380), 4 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2023-12-23 05:34:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1826 transitions. [2023-12-23 05:34:41,290 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1826 transitions. Word has length 607 [2023-12-23 05:34:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:34:41,291 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1826 transitions. [2023-12-23 05:34:41,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:34:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1826 transitions. [2023-12-23 05:34:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:34:41,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:34:41,297 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:41,354 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 05:34:41,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 05:34:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:34:41,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:34:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:34:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1980342011, now seen corresponding path program 1 times [2023-12-23 05:34:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:34:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928493867] [2023-12-23 05:34:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:34:41,707 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 05:34:41,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:34:41,708 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 05:34:41,710 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 05:34:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:34:44,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:34:44,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:35:08,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:35:08,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:35:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928493867] [2023-12-23 05:35:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928493867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:35:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [136249226] [2023-12-23 05:35:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:08,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:35:08,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:35:08,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:35:08,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 05:35:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:10,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:35:10,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:35:12,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:35:12,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [136249226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:35:12,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:35:12,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-12-23 05:35:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581772915] [2023-12-23 05:35:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:35:12,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:35:12,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:35:12,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:35:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:35:12,263 INFO L87 Difference]: Start difference. First operand 1075 states and 1826 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:35:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:35:19,393 INFO L93 Difference]: Finished difference Result 4871 states and 8376 transitions. [2023-12-23 05:35:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 05:35:19,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:35:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:35:19,410 INFO L225 Difference]: With dead ends: 4871 [2023-12-23 05:35:19,410 INFO L226 Difference]: Without dead ends: 3797 [2023-12-23 05:35:19,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1292 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:35:19,416 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1262 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:35:19,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 2206 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-23 05:35:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2023-12-23 05:35:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3247. [2023-12-23 05:35:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 2506 states have (on average 1.673583399840383) internal successors, (4194), 2518 states have internal predecessors, (4194), 724 states have call successors, (724), 16 states have call predecessors, (724), 16 states have return successors, (724), 712 states have call predecessors, (724), 724 states have call successors, (724) [2023-12-23 05:35:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5642 transitions. [2023-12-23 05:35:19,572 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5642 transitions. Word has length 607 [2023-12-23 05:35:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:35:19,574 INFO L495 AbstractCegarLoop]: Abstraction has 3247 states and 5642 transitions. [2023-12-23 05:35:19,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:35:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5642 transitions. [2023-12-23 05:35:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:35:19,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:35:19,579 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:19,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 05:35:19,836 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 (6)] Ended with exit code 0 [2023-12-23 05:35:19,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 05:35:19,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:35:19,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:35:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1162693561, now seen corresponding path program 1 times [2023-12-23 05:35:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:35:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862692489] [2023-12-23 05:35:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:19,989 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 05:35:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:35:19,990 INFO L229 MonitoredProcess]: Starting monitored process 8 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 05:35:19,991 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 (8)] Waiting until timeout for monitored process [2023-12-23 05:35:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:22,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:35:22,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:35:45,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:35:46,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:35:46,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862692489] [2023-12-23 05:35:46,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862692489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:35:46,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [505598495] [2023-12-23 05:35:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:35:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:35:46,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:35:46,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 05:35:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:48,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:35:48,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:35:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:35:48,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:35:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [505598495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:35:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:35:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:35:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149332629] [2023-12-23 05:35:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:35:48,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:35:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:35:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:35:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:35:48,938 INFO L87 Difference]: Start difference. First operand 3247 states and 5642 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:35:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:35:50,245 INFO L93 Difference]: Finished difference Result 7325 states and 12652 transitions. [2023-12-23 05:35:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:35:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:35:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:35:50,266 INFO L225 Difference]: With dead ends: 7325 [2023-12-23 05:35:50,266 INFO L226 Difference]: Without dead ends: 3939 [2023-12-23 05:35:50,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:35:50,276 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 232 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-23 05:35:50,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 969 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-23 05:35:50,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2023-12-23 05:35:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2829. [2023-12-23 05:35:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2280 states have (on average 1.6833333333333333) internal successors, (3838), 2284 states have internal predecessors, (3838), 532 states have call successors, (532), 16 states have call predecessors, (532), 16 states have return successors, (532), 528 states have call predecessors, (532), 532 states have call successors, (532) [2023-12-23 05:35:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4902 transitions. [2023-12-23 05:35:50,450 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4902 transitions. Word has length 607 [2023-12-23 05:35:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:35:50,451 INFO L495 AbstractCegarLoop]: Abstraction has 2829 states and 4902 transitions. [2023-12-23 05:35:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:35:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4902 transitions. [2023-12-23 05:35:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:35:50,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:35:50,456 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:50,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 05:35:50,714 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 (8)] Forceful destruction successful, exit code 0 [2023-12-23 05:35:50,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /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 05:35:50,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:35:50,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:35:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -928421891, now seen corresponding path program 1 times [2023-12-23 05:35:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:35:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582505747] [2023-12-23 05:35:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:35:50,869 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 05:35:50,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:35:50,870 INFO L229 MonitoredProcess]: Starting monitored process 10 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 05:35:50,873 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 (10)] Waiting until timeout for monitored process [2023-12-23 05:35:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:35:53,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:35:53,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:36:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:36:16,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:36:17,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:36:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582505747] [2023-12-23 05:36:17,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582505747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:36:17,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420446249] [2023-12-23 05:36:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:36:17,253 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:36:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:36:17,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:36:17,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 05:36:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:36:18,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:36:18,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:36:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:36:19,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:36:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420446249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:36:19,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:36:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 05:36:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006467928] [2023-12-23 05:36:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:36:19,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:36:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:36:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:36:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:36:19,505 INFO L87 Difference]: Start difference. First operand 2829 states and 4902 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:36:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:36:20,500 INFO L93 Difference]: Finished difference Result 7019 states and 12080 transitions. [2023-12-23 05:36:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:36:20,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:36:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:36:20,520 INFO L225 Difference]: With dead ends: 7019 [2023-12-23 05:36:20,520 INFO L226 Difference]: Without dead ends: 4031 [2023-12-23 05:36:20,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:36:20,528 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 225 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:36:20,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1011 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 05:36:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2023-12-23 05:36:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 2961. [2023-12-23 05:36:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2412 states have (on average 1.6799336650082919) internal successors, (4052), 2416 states have internal predecessors, (4052), 532 states have call successors, (532), 16 states have call predecessors, (532), 16 states have return successors, (532), 528 states have call predecessors, (532), 532 states have call successors, (532) [2023-12-23 05:36:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 5116 transitions. [2023-12-23 05:36:20,698 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 5116 transitions. Word has length 607 [2023-12-23 05:36:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:36:20,699 INFO L495 AbstractCegarLoop]: Abstraction has 2961 states and 5116 transitions. [2023-12-23 05:36:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:36:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 5116 transitions. [2023-12-23 05:36:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:36:20,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:36:20,704 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:20,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 05:36:20,963 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 (10)] Forceful destruction successful, exit code 0 [2023-12-23 05:36:21,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /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 05:36:21,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:36:21,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:36:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -865892549, now seen corresponding path program 1 times [2023-12-23 05:36:21,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:36:21,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545629530] [2023-12-23 05:36:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:36:21,107 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 05:36:21,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:36:21,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:36:21,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-23 05:36:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:36:24,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:36:24,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:36:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:36:46,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:36:47,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:36:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545629530] [2023-12-23 05:36:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545629530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:36:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2110791164] [2023-12-23 05:36:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:36:47,510 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:36:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:36:47,511 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:36:47,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 05:36:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:36:48,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:36:48,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:37:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:37:02,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:37:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2110791164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:37:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:37:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-23 05:37:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900828404] [2023-12-23 05:37:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:37:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:37:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:37:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:37:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:37:02,398 INFO L87 Difference]: Start difference. First operand 2961 states and 5116 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:37:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:37:02,838 INFO L93 Difference]: Finished difference Result 8493 states and 14634 transitions. [2023-12-23 05:37:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:37:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:37:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:37:02,863 INFO L225 Difference]: With dead ends: 8493 [2023-12-23 05:37:02,863 INFO L226 Difference]: Without dead ends: 5533 [2023-12-23 05:37:02,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:37:02,872 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 165 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:37:02,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 928 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 05:37:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2023-12-23 05:37:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5317. [2023-12-23 05:37:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 4220 states have (on average 1.6559241706161136) internal successors, (6988), 4228 states have internal predecessors, (6988), 1064 states have call successors, (1064), 32 states have call predecessors, (1064), 32 states have return successors, (1064), 1056 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-12-23 05:37:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 9116 transitions. [2023-12-23 05:37:03,163 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 9116 transitions. Word has length 607 [2023-12-23 05:37:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:37:03,164 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 9116 transitions. [2023-12-23 05:37:03,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:37:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 9116 transitions. [2023-12-23 05:37:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:37:03,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:37:03,170 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:03,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 05:37:03,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-23 05:37:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:37:03,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:37:03,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:37:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1375365639, now seen corresponding path program 1 times [2023-12-23 05:37:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:37:03,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705032593] [2023-12-23 05:37:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:37:03,578 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 05:37:03,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:37:03,579 INFO L229 MonitoredProcess]: Starting monitored process 14 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 05:37:03,580 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 (14)] Waiting until timeout for monitored process [2023-12-23 05:37:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:37:06,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:37:06,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:37:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:37:28,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:37:29,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:37:29,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705032593] [2023-12-23 05:37:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705032593] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:37:29,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1262863761] [2023-12-23 05:37:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:37:29,345 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:37:29,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:37:29,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:37:29,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 05:37:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:37:30,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:37:30,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:37:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:37:32,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:37:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1262863761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:37:32,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:37:32,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-12-23 05:37:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94748054] [2023-12-23 05:37:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:37:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:37:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:37:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:37:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:37:32,474 INFO L87 Difference]: Start difference. First operand 5317 states and 9116 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:37:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:37:42,741 INFO L93 Difference]: Finished difference Result 25759 states and 43358 transitions. [2023-12-23 05:37:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:37:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:37:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:37:42,816 INFO L225 Difference]: With dead ends: 25759 [2023-12-23 05:37:42,816 INFO L226 Difference]: Without dead ends: 20443 [2023-12-23 05:37:42,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1284 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-23 05:37:42,835 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1756 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:37:42,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2370 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-23 05:37:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20443 states. [2023-12-23 05:37:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20443 to 15813. [2023-12-23 05:37:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 11924 states have (on average 1.5935927541093593) internal successors, (19002), 11972 states have internal predecessors, (19002), 3760 states have call successors, (3760), 128 states have call predecessors, (3760), 128 states have return successors, (3760), 3712 states have call predecessors, (3760), 3760 states have call successors, (3760) [2023-12-23 05:37:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 26522 transitions. [2023-12-23 05:37:43,867 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 26522 transitions. Word has length 607 [2023-12-23 05:37:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:37:43,868 INFO L495 AbstractCegarLoop]: Abstraction has 15813 states and 26522 transitions. [2023-12-23 05:37:43,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:37:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 26522 transitions. [2023-12-23 05:37:43,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:37:43,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:37:43,877 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:43,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 05:37:44,144 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 (14)] Forceful destruction successful, exit code 0 [2023-12-23 05:37:44,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 05:37:44,290 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:37:44,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:37:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1774470901, now seen corresponding path program 1 times [2023-12-23 05:37:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:37:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24417479] [2023-12-23 05:37:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:37:44,291 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 05:37:44,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:37:44,292 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 05:37:44,306 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 05:37:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:37:47,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:37:47,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:38:09,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:38:10,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:38:10,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24417479] [2023-12-23 05:38:10,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24417479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:38:10,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [891033783] [2023-12-23 05:38:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:38:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:38:10,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:38:10,688 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:38:10,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 05:38:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:38:12,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:38:12,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:38:13,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:38:13,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [891033783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:38:13,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:38:13,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-12-23 05:38:13,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467452815] [2023-12-23 05:38:13,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:38:13,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 05:38:13,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:38:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 05:38:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:38:13,764 INFO L87 Difference]: Start difference. First operand 15813 states and 26522 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:38:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:38:23,918 INFO L93 Difference]: Finished difference Result 46383 states and 76434 transitions. [2023-12-23 05:38:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:38:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:38:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:38:24,111 INFO L225 Difference]: With dead ends: 46383 [2023-12-23 05:38:24,112 INFO L226 Difference]: Without dead ends: 30571 [2023-12-23 05:38:24,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1284 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-23 05:38:24,149 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1555 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-23 05:38:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2095 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-23 05:38:24,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30571 states. [2023-12-23 05:38:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30571 to 23045. [2023-12-23 05:38:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23045 states, 15828 states have (on average 1.5159211523881728) internal successors, (23994), 15940 states have internal predecessors, (23994), 6960 states have call successors, (6960), 256 states have call predecessors, (6960), 256 states have return successors, (6960), 6848 states have call predecessors, (6960), 6960 states have call successors, (6960) [2023-12-23 05:38:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23045 states to 23045 states and 37914 transitions. [2023-12-23 05:38:26,099 INFO L78 Accepts]: Start accepts. Automaton has 23045 states and 37914 transitions. Word has length 607 [2023-12-23 05:38:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:38:26,100 INFO L495 AbstractCegarLoop]: Abstraction has 23045 states and 37914 transitions. [2023-12-23 05:38:26,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:38:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23045 states and 37914 transitions. [2023-12-23 05:38:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:38:26,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:38:26,111 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:26,183 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 05:38:26,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-23 05:38:26,532 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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:38:26,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:38:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:38:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash -219673805, now seen corresponding path program 1 times [2023-12-23 05:38:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:38:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095184872] [2023-12-23 05:38:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:38:26,534 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 05:38:26,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:38:26,537 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 05:38:26,556 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 05:38:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:38:29,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:38:29,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:38:52,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:38:52,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:38:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095184872] [2023-12-23 05:38:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095184872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:38:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1814933568] [2023-12-23 05:38:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:38:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:38:52,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:38:52,776 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:38:52,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 05:38:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:38:54,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:38:54,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:38:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-23 05:38:55,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:38:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1814933568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:38:55,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:38:55,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-23 05:38:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451107573] [2023-12-23 05:38:55,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:38:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:38:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:38:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:38:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-23 05:38:55,342 INFO L87 Difference]: Start difference. First operand 23045 states and 37914 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:39:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:39:00,957 INFO L93 Difference]: Finished difference Result 67371 states and 109446 transitions. [2023-12-23 05:39:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 05:39:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 607 [2023-12-23 05:39:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:39:01,114 INFO L225 Difference]: With dead ends: 67371 [2023-12-23 05:39:01,114 INFO L226 Difference]: Without dead ends: 44327 [2023-12-23 05:39:01,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-23 05:39:01,180 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 712 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:39:01,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 957 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-23 05:39:01,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44327 states. [2023-12-23 05:39:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44327 to 27619. [2023-12-23 05:39:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27619 states, 20274 states have (on average 1.5365492749334122) internal successors, (31152), 20386 states have internal predecessors, (31152), 6960 states have call successors, (6960), 384 states have call predecessors, (6960), 384 states have return successors, (6960), 6848 states have call predecessors, (6960), 6960 states have call successors, (6960) [2023-12-23 05:39:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27619 states to 27619 states and 45072 transitions. [2023-12-23 05:39:03,226 INFO L78 Accepts]: Start accepts. Automaton has 27619 states and 45072 transitions. Word has length 607 [2023-12-23 05:39:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:39:03,228 INFO L495 AbstractCegarLoop]: Abstraction has 27619 states and 45072 transitions. [2023-12-23 05:39:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-23 05:39:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 27619 states and 45072 transitions. [2023-12-23 05:39:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:39:03,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:39:03,240 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:03,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-23 05:39:03,509 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 (18)] Forceful destruction successful, exit code 0 [2023-12-23 05:39:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /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 05:39:03,660 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:39:03,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:39:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1060189873, now seen corresponding path program 1 times [2023-12-23 05:39:03,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:39:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253610118] [2023-12-23 05:39:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:39:03,662 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 05:39:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:39:03,664 INFO L229 MonitoredProcess]: Starting monitored process 20 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 05:39:03,708 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 (20)] Waiting until timeout for monitored process [2023-12-23 05:39:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:39:06,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:39:06,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:39:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:39:29,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:39:30,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:39:30,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253610118] [2023-12-23 05:39:30,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253610118] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:39:30,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407588232] [2023-12-23 05:39:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:39:30,209 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:39:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:39:30,210 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:39:30,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-23 05:39:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:39:39,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 05:39:39,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8094 proven. 186 refuted. 0 times theorem prover too weak. 9580 trivial. 0 not checked. [2023-12-23 05:40:03,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1407588232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:40:03,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 05:40:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533480576] [2023-12-23 05:40:03,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 05:40:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:03,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 05:40:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:40:03,675 INFO L87 Difference]: Start difference. First operand 27619 states and 45072 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 05:40:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:15,865 INFO L93 Difference]: Finished difference Result 70421 states and 114166 transitions. [2023-12-23 05:40:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:40:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 607 [2023-12-23 05:40:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:15,991 INFO L225 Difference]: With dead ends: 70421 [2023-12-23 05:40:15,991 INFO L226 Difference]: Without dead ends: 42803 [2023-12-23 05:40:16,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:40:16,050 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 244 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:16,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1758 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-23 05:40:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42803 states. [2023-12-23 05:40:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42803 to 42161. [2023-12-23 05:40:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42161 states, 31016 states have (on average 1.5277921072994582) internal successors, (47386), 31184 states have internal predecessors, (47386), 10440 states have call successors, (10440), 704 states have call predecessors, (10440), 704 states have return successors, (10440), 10272 states have call predecessors, (10440), 10440 states have call successors, (10440) [2023-12-23 05:40:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42161 states to 42161 states and 68266 transitions. [2023-12-23 05:40:18,749 INFO L78 Accepts]: Start accepts. Automaton has 42161 states and 68266 transitions. Word has length 607 [2023-12-23 05:40:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:18,751 INFO L495 AbstractCegarLoop]: Abstraction has 42161 states and 68266 transitions. [2023-12-23 05:40:18,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (95), 2 states have call predecessors, (95), 3 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 05:40:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 42161 states and 68266 transitions. [2023-12-23 05:40:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:40:18,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:18,767 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:18,826 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 (20)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:19,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:40:19,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:19,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1504090547, now seen corresponding path program 1 times [2023-12-23 05:40:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720441443] [2023-12-23 05:40:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:19,182 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 05:40:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:19,183 INFO L229 MonitoredProcess]: Starting monitored process 22 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 05:40:19,186 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 (22)] Waiting until timeout for monitored process [2023-12-23 05:40:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:22,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:40:22,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 2382 proven. 18 refuted. 0 times theorem prover too weak. 15460 trivial. 0 not checked. [2023-12-23 05:40:24,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 264 proven. 18 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-23 05:40:26,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:26,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720441443] [2023-12-23 05:40:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720441443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:26,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:26,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:40:26,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991338785] [2023-12-23 05:40:26,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:26,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:40:26,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:26,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:40:26,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:40:26,892 INFO L87 Difference]: Start difference. First operand 42161 states and 68266 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 05:40:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:40:36,438 INFO L93 Difference]: Finished difference Result 85425 states and 137611 transitions. [2023-12-23 05:40:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:40:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 607 [2023-12-23 05:40:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:40:36,579 INFO L225 Difference]: With dead ends: 85425 [2023-12-23 05:40:36,579 INFO L226 Difference]: Without dead ends: 43265 [2023-12-23 05:40:36,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1206 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:40:36,665 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 313 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:40:36,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 900 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-23 05:40:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-12-23 05:40:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 42257. [2023-12-23 05:40:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42257 states, 31088 states have (on average 1.511129696345857) internal successors, (46978), 31256 states have internal predecessors, (46978), 10440 states have call successors, (10440), 728 states have call predecessors, (10440), 728 states have return successors, (10440), 10272 states have call predecessors, (10440), 10440 states have call successors, (10440) [2023-12-23 05:40:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42257 states to 42257 states and 67858 transitions. [2023-12-23 05:40:39,451 INFO L78 Accepts]: Start accepts. Automaton has 42257 states and 67858 transitions. Word has length 607 [2023-12-23 05:40:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:40:39,452 INFO L495 AbstractCegarLoop]: Abstraction has 42257 states and 67858 transitions. [2023-12-23 05:40:39,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 05:40:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 42257 states and 67858 transitions. [2023-12-23 05:40:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:40:39,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:40:39,468 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:39,528 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 (22)] Forceful destruction successful, exit code 0 [2023-12-23 05:40:39,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 05:40:39,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:40:39,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:40:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash -301347787, now seen corresponding path program 1 times [2023-12-23 05:40:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:40:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585702164] [2023-12-23 05:40:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:40:39,677 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 05:40:39,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:40:39,678 INFO L229 MonitoredProcess]: Starting monitored process 23 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 05:40:39,679 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 (23)] Waiting until timeout for monitored process [2023-12-23 05:40:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:40:42,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:40:42,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:40:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 2382 proven. 18 refuted. 0 times theorem prover too weak. 15460 trivial. 0 not checked. [2023-12-23 05:40:45,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:40:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 264 proven. 18 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-23 05:40:48,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:40:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585702164] [2023-12-23 05:40:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585702164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:40:48,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:40:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 05:40:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623779001] [2023-12-23 05:40:48,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:40:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 05:40:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:40:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 05:40:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 05:40:48,175 INFO L87 Difference]: Start difference. First operand 42257 states and 67858 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 05:41:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:41:08,435 INFO L93 Difference]: Finished difference Result 128785 states and 205588 transitions. [2023-12-23 05:41:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 05:41:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 607 [2023-12-23 05:41:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:41:08,668 INFO L225 Difference]: With dead ends: 128785 [2023-12-23 05:41:08,668 INFO L226 Difference]: Without dead ends: 86529 [2023-12-23 05:41:08,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1206 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 05:41:08,758 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 943 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:41:08,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1969 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-12-23 05:41:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86529 states. [2023-12-23 05:41:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86529 to 84511. [2023-12-23 05:41:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84511 states, 62174 states have (on average 1.498793707980828) internal successors, (93186), 62510 states have internal predecessors, (93186), 20880 states have call successors, (20880), 1456 states have call predecessors, (20880), 1456 states have return successors, (20880), 20544 states have call predecessors, (20880), 20880 states have call successors, (20880) [2023-12-23 05:41:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84511 states to 84511 states and 134946 transitions. [2023-12-23 05:41:14,405 INFO L78 Accepts]: Start accepts. Automaton has 84511 states and 134946 transitions. Word has length 607 [2023-12-23 05:41:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:41:14,405 INFO L495 AbstractCegarLoop]: Abstraction has 84511 states and 134946 transitions. [2023-12-23 05:41:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 05:41:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 84511 states and 134946 transitions. [2023-12-23 05:41:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-23 05:41:14,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:41:14,430 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:14,486 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 (23)] Ended with exit code 0 [2023-12-23 05:41:14,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 05:41:14,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:41:14,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:41:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1384203253, now seen corresponding path program 1 times [2023-12-23 05:41:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:41:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136533334] [2023-12-23 05:41:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:41:14,644 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 05:41:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:41:14,645 INFO L229 MonitoredProcess]: Starting monitored process 24 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 05:41:14,647 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 (24)] Waiting until timeout for monitored process [2023-12-23 05:41:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:41:17,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-23 05:41:17,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 05:46:07,220 WARN L340 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 (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:46:07,220 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:46:09,093 WARN L435 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 (24)] Forcibly destroying the process [2023-12-23 05:46:09,162 WARN L724 oredProcess$PipePump]: [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 (24)] The stream was forcibly closed: stdIn [2023-12-23 05:46:09,162 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 (24)] Forceful destruction successful, exit code 0 [2023-12-23 05:46:09,297 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-23 05:46:09,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown