/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-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:01:37,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:01:37,297 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 05:01:37,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:01:37,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:01:37,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:01:37,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:01:37,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:01:37,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:01:37,337 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:01:37,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:01:37,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:01:37,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:01:37,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:01:37,339 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:01:37,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:01:37,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:01:37,339 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:01:37,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:01:37,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:01:37,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:01:37,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:01:37,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:01:37,341 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:01:37,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:01:37,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:01:37,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:01:37,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:01:37,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:01:37,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:01:37,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:01:37,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:01:37,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:01:37,344 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:01:37,344 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:01:37,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:01:37,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:01:37,345 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:01:37,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:01:37,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:01:37,345 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:01:37,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:01:37,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:01:37,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:01:37,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:01:37,570 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:01:37,570 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:01:37,571 INFO L431 ainManager$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-56.i [2023-12-23 05:01:38,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:01:39,041 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:01:39,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-56.i [2023-12-23 05:01:39,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a7b58b8/b1c78d9df9124c3da3e04aba1ac78b51/FLAG4a0861838 [2023-12-23 05:01:39,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a7b58b8/b1c78d9df9124c3da3e04aba1ac78b51 [2023-12-23 05:01:39,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:01:39,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:01:39,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:01:39,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:01:39,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:01:39,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60972c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39, skipping insertion in model container [2023-12-23 05:01:39,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:01:39,266 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-56.i[916,929] [2023-12-23 05:01:39,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:01:39,489 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:01:39,497 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-56.i[916,929] [2023-12-23 05:01:39,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:01:39,598 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:01:39,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39 WrapperNode [2023-12-23 05:01:39,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:01:39,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:01:39,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:01:39,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:01:39,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,676 INFO L138 Inliner]: procedures = 27, calls = 142, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 733 [2023-12-23 05:01:39,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:01:39,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:01:39,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:01:39,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:01:39,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,825 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 05:01:39,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:01:39,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:01:39,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:01:39,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:01:39,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (1/1) ... [2023-12-23 05:01:39,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:01:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:01:39,919 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 05:01:39,928 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 05:01:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:01:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:01:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:01:39,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:01:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:01:39,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:01:40,084 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:01:40,086 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:02:08,537 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:02:08,608 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:02:08,608 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:02:08,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:02:08 BoogieIcfgContainer [2023-12-23 05:02:08,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:02:08,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:02:08,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:02:08,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:02:08,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:01:39" (1/3) ... [2023-12-23 05:02:08,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5386d5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:02:08, skipping insertion in model container [2023-12-23 05:02:08,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:01:39" (2/3) ... [2023-12-23 05:02:08,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5386d5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:02:08, skipping insertion in model container [2023-12-23 05:02:08,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:02:08" (3/3) ... [2023-12-23 05:02:08,618 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-56.i [2023-12-23 05:02:08,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:02:08,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:02:08,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:02:08,701 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;@44b4e196, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:02:08,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:02:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 189 states have (on average 1.5555555555555556) internal successors, (294), 190 states have internal predecessors, (294), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-23 05:02:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-12-23 05:02:08,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:02:08,739 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:08,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:02:08,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:02:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1072196791, now seen corresponding path program 1 times [2023-12-23 05:02:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:02:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793457146] [2023-12-23 05:02:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:02:08,772 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 05:02:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:02:08,773 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 05:02:08,776 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 05:02:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:02:10,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 05:02:10,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:02:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 2240 proven. 0 refuted. 0 times theorem prover too weak. 30784 trivial. 0 not checked. [2023-12-23 05:02:10,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:02:10,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:02:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793457146] [2023-12-23 05:02:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793457146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:02:10,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:02:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:02:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36453394] [2023-12-23 05:02:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:02:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 05:02:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:02:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 05:02:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:02:10,233 INFO L87 Difference]: Start difference. First operand has 321 states, 189 states have (on average 1.5555555555555556) internal successors, (294), 190 states have internal predecessors, (294), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-23 05:02:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:02:10,389 INFO L93 Difference]: Finished difference Result 639 states and 1231 transitions. [2023-12-23 05:02:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 05:02:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 792 [2023-12-23 05:02:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:02:10,409 INFO L225 Difference]: With dead ends: 639 [2023-12-23 05:02:10,409 INFO L226 Difference]: Without dead ends: 319 [2023-12-23 05:02:10,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 791 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 05:02:10,417 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:02:10,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 544 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 05:02:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-23 05:02:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-12-23 05:02:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 188 states have (on average 1.5372340425531914) internal successors, (289), 188 states have internal predecessors, (289), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-23 05:02:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 547 transitions. [2023-12-23 05:02:10,517 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 547 transitions. Word has length 792 [2023-12-23 05:02:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:02:10,519 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 547 transitions. [2023-12-23 05:02:10,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-23 05:02:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 547 transitions. [2023-12-23 05:02:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-12-23 05:02:10,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:02:10,539 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:10,581 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 05:02:10,760 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 05:02:10,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:02:10,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:02:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1887593645, now seen corresponding path program 1 times [2023-12-23 05:02:10,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:02:10,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351407336] [2023-12-23 05:02:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:02:10,764 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 05:02:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:02:10,766 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 05:02:10,771 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 05:02:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:02:12,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:02:12,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:02:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-23 05:02:13,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:02:13,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:02:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351407336] [2023-12-23 05:02:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351407336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:02:13,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:02:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:02:13,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98722476] [2023-12-23 05:02:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:02:13,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:02:13,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:02:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:02:13,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:02:13,100 INFO L87 Difference]: Start difference. First operand 319 states and 547 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:02:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:02:13,756 INFO L93 Difference]: Finished difference Result 805 states and 1389 transitions. [2023-12-23 05:02:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:02:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 792 [2023-12-23 05:02:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:02:13,764 INFO L225 Difference]: With dead ends: 805 [2023-12-23 05:02:13,764 INFO L226 Difference]: Without dead ends: 487 [2023-12-23 05:02:13,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 790 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 05:02:13,766 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 261 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:02:13,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1083 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 05:02:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-23 05:02:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 484. [2023-12-23 05:02:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 314 states have (on average 1.5923566878980893) internal successors, (500), 315 states have internal predecessors, (500), 167 states have call successors, (167), 2 states have call predecessors, (167), 2 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2023-12-23 05:02:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 834 transitions. [2023-12-23 05:02:13,809 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 834 transitions. Word has length 792 [2023-12-23 05:02:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:02:13,811 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 834 transitions. [2023-12-23 05:02:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:02:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 834 transitions. [2023-12-23 05:02:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:02:13,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:02:13,835 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:13,873 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 (3)] Ended with exit code 0 [2023-12-23 05:02:14,035 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 05:02:14,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:02:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:02:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 67058060, now seen corresponding path program 1 times [2023-12-23 05:02:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:02:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755846189] [2023-12-23 05:02:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:02:14,038 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 05:02:14,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:02:14,041 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 05:02:14,077 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 05:02:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:02:15,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 05:02:15,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:02:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 13670 proven. 273 refuted. 0 times theorem prover too weak. 19081 trivial. 0 not checked. [2023-12-23 05:02:49,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:02:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 111 proven. 273 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-23 05:02:57,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:02:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755846189] [2023-12-23 05:02:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755846189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:02:57,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:02:57,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-23 05:02:57,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856808003] [2023-12-23 05:02:57,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:02:57,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-23 05:02:57,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:02:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-23 05:02:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:02:57,450 INFO L87 Difference]: Start difference. First operand 484 states and 834 transitions. Second operand has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) [2023-12-23 05:03:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:03:36,742 INFO L93 Difference]: Finished difference Result 1801 states and 3090 transitions. [2023-12-23 05:03:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 05:03:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) Word has length 793 [2023-12-23 05:03:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:03:36,753 INFO L225 Difference]: With dead ends: 1801 [2023-12-23 05:03:36,753 INFO L226 Difference]: Without dead ends: 1318 [2023-12-23 05:03:36,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1591 GetRequests, 1574 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2023-12-23 05:03:36,757 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 2355 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:03:36,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 3082 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [516 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 37.6s Time] [2023-12-23 05:03:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-12-23 05:03:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1046. [2023-12-23 05:03:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 707 states have (on average 1.608203677510608) internal successors, (1137), 709 states have internal predecessors, (1137), 332 states have call successors, (332), 6 states have call predecessors, (332), 6 states have return successors, (332), 330 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-23 05:03:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1801 transitions. [2023-12-23 05:03:36,898 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1801 transitions. Word has length 793 [2023-12-23 05:03:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:03:36,899 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1801 transitions. [2023-12-23 05:03:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 4 states have call successors, (258), 3 states have call predecessors, (258), 5 states have return successors, (258), 4 states have call predecessors, (258), 4 states have call successors, (258) [2023-12-23 05:03:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1801 transitions. [2023-12-23 05:03:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:03:36,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:03:36,908 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:36,944 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 05:03:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:03:37,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:03:37,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:03:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1342567300, now seen corresponding path program 1 times [2023-12-23 05:03:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:03:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902095991] [2023-12-23 05:03:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:03:37,112 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 05:03:37,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:03:37,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:03:37,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 05:03:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:03:38,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:03:38,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:03:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-23 05:03:38,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:03:38,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:03:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902095991] [2023-12-23 05:03:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902095991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:03:38,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:03:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:03:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815289709] [2023-12-23 05:03:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:03:38,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:03:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:03:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:03:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:03:38,682 INFO L87 Difference]: Start difference. First operand 1046 states and 1801 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:03:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:03:40,409 INFO L93 Difference]: Finished difference Result 2832 states and 4882 transitions. [2023-12-23 05:03:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:03:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 793 [2023-12-23 05:03:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:03:40,421 INFO L225 Difference]: With dead ends: 2832 [2023-12-23 05:03:40,423 INFO L226 Difference]: Without dead ends: 1787 [2023-12-23 05:03:40,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 791 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 05:03:40,430 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 312 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:03:40,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1092 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 05:03:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2023-12-23 05:03:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1783. [2023-12-23 05:03:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1248 states have (on average 1.6225961538461537) internal successors, (2025), 1254 states have internal predecessors, (2025), 522 states have call successors, (522), 12 states have call predecessors, (522), 12 states have return successors, (522), 516 states have call predecessors, (522), 522 states have call successors, (522) [2023-12-23 05:03:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 3069 transitions. [2023-12-23 05:03:40,556 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 3069 transitions. Word has length 793 [2023-12-23 05:03:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:03:40,558 INFO L495 AbstractCegarLoop]: Abstraction has 1783 states and 3069 transitions. [2023-12-23 05:03:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:03:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 3069 transitions. [2023-12-23 05:03:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:03:40,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:03:40,566 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:40,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 05:03:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:03:40,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:03:40,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:03:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1024127294, now seen corresponding path program 1 times [2023-12-23 05:03:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:03:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145513489] [2023-12-23 05:03:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:03:40,795 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 05:03:40,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:03:40,797 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 05:03:40,798 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 05:03:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:03:41,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:03:41,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:04:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 13076 proven. 558 refuted. 0 times theorem prover too weak. 19390 trivial. 0 not checked. [2023-12-23 05:04:29,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:04:32,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:04:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145513489] [2023-12-23 05:04:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145513489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:04:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2087571437] [2023-12-23 05:04:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:04:32,920 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:04:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:04:32,960 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 05:04:32,972 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 05:04:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:04:33,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:04:33,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:04:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-23 05:04:34,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:04:34,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2087571437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:04:34,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:04:34,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-23 05:04:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846497391] [2023-12-23 05:04:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:04:34,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:04:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:04:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:04:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-23 05:04:34,903 INFO L87 Difference]: Start difference. First operand 1783 states and 3069 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:04:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:04:37,115 INFO L93 Difference]: Finished difference Result 5131 states and 8796 transitions. [2023-12-23 05:04:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 05:04:37,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 793 [2023-12-23 05:04:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:04:37,130 INFO L225 Difference]: With dead ends: 5131 [2023-12-23 05:04:37,134 INFO L226 Difference]: Without dead ends: 3349 [2023-12-23 05:04:37,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1665 GetRequests, 1654 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:04:37,139 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 912 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:04:37,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2183 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-23 05:04:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2023-12-23 05:04:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 2038. [2023-12-23 05:04:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 1485 states have (on average 1.632996632996633) internal successors, (2425), 1491 states have internal predecessors, (2425), 536 states have call successors, (536), 16 states have call predecessors, (536), 16 states have return successors, (536), 530 states have call predecessors, (536), 536 states have call successors, (536) [2023-12-23 05:04:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 3497 transitions. [2023-12-23 05:04:37,280 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 3497 transitions. Word has length 793 [2023-12-23 05:04:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:04:37,281 INFO L495 AbstractCegarLoop]: Abstraction has 2038 states and 3497 transitions. [2023-12-23 05:04:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:04:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 3497 transitions. [2023-12-23 05:04:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:04:37,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:04:37,288 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:37,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-23 05:04:37,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 05:04:37,696 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 05:04:37,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:04:37,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:04:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1096513852, now seen corresponding path program 1 times [2023-12-23 05:04:37,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:04:37,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031431124] [2023-12-23 05:04:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:04:37,698 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 05:04:37,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:04:37,699 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 05:04:37,700 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 05:04:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:04:38,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:04:38,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:05:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 13076 proven. 558 refuted. 0 times theorem prover too weak. 19390 trivial. 0 not checked. [2023-12-23 05:05:23,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:05:26,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:05:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031431124] [2023-12-23 05:05:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031431124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:05:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [737484488] [2023-12-23 05:05:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:05:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:05:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:05:26,880 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 05:05:26,881 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 05:05:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:05:27,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:05:27,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:05:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-23 05:05:28,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:05:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [737484488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:05:28,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:05:28,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 05:05:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39510196] [2023-12-23 05:05:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:05:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:05:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:05:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:05:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:05:28,234 INFO L87 Difference]: Start difference. First operand 2038 states and 3497 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:05:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:05:28,604 INFO L93 Difference]: Finished difference Result 5231 states and 8846 transitions. [2023-12-23 05:05:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:05:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 793 [2023-12-23 05:05:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:05:28,622 INFO L225 Difference]: With dead ends: 5231 [2023-12-23 05:05:28,622 INFO L226 Difference]: Without dead ends: 3194 [2023-12-23 05:05:28,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1663 GetRequests, 1654 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:05:28,628 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 355 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 05:05:28,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1387 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 05:05:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2023-12-23 05:05:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3190. [2023-12-23 05:05:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 2101 states have (on average 1.5321275583055687) internal successors, (3219), 2115 states have internal predecessors, (3219), 1056 states have call successors, (1056), 32 states have call predecessors, (1056), 32 states have return successors, (1056), 1042 states have call predecessors, (1056), 1056 states have call successors, (1056) [2023-12-23 05:05:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 5331 transitions. [2023-12-23 05:05:28,849 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 5331 transitions. Word has length 793 [2023-12-23 05:05:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:05:28,850 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 5331 transitions. [2023-12-23 05:05:28,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:05:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 5331 transitions. [2023-12-23 05:05:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:05:28,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:05:28,857 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:28,870 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 05:05:29,099 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 (8)] Ended with exit code 0 [2023-12-23 05:05:29,272 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 05:05:29,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:05:29,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:05:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash 386660288, now seen corresponding path program 1 times [2023-12-23 05:05:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:05:29,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335148920] [2023-12-23 05:05:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:05:29,276 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 05:05:29,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:05:29,277 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 05:05:29,278 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 05:05:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:05:30,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:05:30,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:06:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 13076 proven. 558 refuted. 0 times theorem prover too weak. 19390 trivial. 0 not checked. [2023-12-23 05:06:15,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:06:19,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:06:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335148920] [2023-12-23 05:06:19,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335148920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:06:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1013487203] [2023-12-23 05:06:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:06:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:06:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:06:19,041 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 05:06:19,054 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 05:06:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:06:22,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 05:06:22,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:06:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 7134 proven. 45 refuted. 0 times theorem prover too weak. 25845 trivial. 0 not checked. [2023-12-23 05:06:25,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:06:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-23 05:06:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1013487203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:06:28,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-23 05:06:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-12-23 05:06:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405828920] [2023-12-23 05:06:28,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-23 05:06:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 05:06:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:06:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 05:06:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-23 05:06:28,652 INFO L87 Difference]: Start difference. First operand 3190 states and 5331 transitions. Second operand has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 13 states have internal predecessors, (291), 5 states have call successors, (273), 5 states have call predecessors, (273), 8 states have return successors, (274), 5 states have call predecessors, (274), 5 states have call successors, (274) [2023-12-23 05:06:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:06:48,962 INFO L93 Difference]: Finished difference Result 8645 states and 14265 transitions. [2023-12-23 05:06:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-23 05:06:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 13 states have internal predecessors, (291), 5 states have call successors, (273), 5 states have call predecessors, (273), 8 states have return successors, (274), 5 states have call predecessors, (274), 5 states have call successors, (274) Word has length 793 [2023-12-23 05:06:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:06:48,983 INFO L225 Difference]: With dead ends: 8645 [2023-12-23 05:06:48,984 INFO L226 Difference]: Without dead ends: 5456 [2023-12-23 05:06:48,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2472 GetRequests, 2442 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2023-12-23 05:06:48,992 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1839 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 1283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:06:48,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 1894 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1283 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-12-23 05:06:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2023-12-23 05:06:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 5314. [2023-12-23 05:06:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 3511 states have (on average 1.5106807177442325) internal successors, (5304), 3536 states have internal predecessors, (5304), 1724 states have call successors, (1724), 78 states have call predecessors, (1724), 78 states have return successors, (1724), 1699 states have call predecessors, (1724), 1724 states have call successors, (1724) [2023-12-23 05:06:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 8752 transitions. [2023-12-23 05:06:49,363 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 8752 transitions. Word has length 793 [2023-12-23 05:06:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:06:49,364 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 8752 transitions. [2023-12-23 05:06:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 13 states have internal predecessors, (291), 5 states have call successors, (273), 5 states have call predecessors, (273), 8 states have return successors, (274), 5 states have call predecessors, (274), 5 states have call successors, (274) [2023-12-23 05:06:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 8752 transitions. [2023-12-23 05:06:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:06:49,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:06:49,383 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:49,405 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 05:06:49,629 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 (10)] Ended with exit code 0 [2023-12-23 05:06:49,800 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 05:06:49,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:06:49,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:06:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash -434712960, now seen corresponding path program 1 times [2023-12-23 05:06:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:06:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690919393] [2023-12-23 05:06:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:06:49,805 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 05:06:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:06:49,807 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 05:06:49,811 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 05:06:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:06:50,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:06:50,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:06:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 10320 proven. 72 refuted. 0 times theorem prover too weak. 22632 trivial. 0 not checked. [2023-12-23 05:06:55,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:06:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 312 proven. 72 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-23 05:06:58,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:06:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690919393] [2023-12-23 05:06:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690919393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:06:58,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:06:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:06:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314725267] [2023-12-23 05:06:58,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:06:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:06:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:06:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:06:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:06:58,456 INFO L87 Difference]: Start difference. First operand 5314 states and 8752 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-23 05:07:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:07:07,045 INFO L93 Difference]: Finished difference Result 10759 states and 17629 transitions. [2023-12-23 05:07:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:07:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 793 [2023-12-23 05:07:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:07:07,073 INFO L225 Difference]: With dead ends: 10759 [2023-12-23 05:07:07,073 INFO L226 Difference]: Without dead ends: 5446 [2023-12-23 05:07:07,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 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 05:07:07,083 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 540 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-23 05:07:07,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 955 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-23 05:07:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2023-12-23 05:07:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5338. [2023-12-23 05:07:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 3529 states have (on average 1.4910739586285067) internal successors, (5262), 3554 states have internal predecessors, (5262), 1724 states have call successors, (1724), 84 states have call predecessors, (1724), 84 states have return successors, (1724), 1699 states have call predecessors, (1724), 1724 states have call successors, (1724) [2023-12-23 05:07:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8710 transitions. [2023-12-23 05:07:07,488 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8710 transitions. Word has length 793 [2023-12-23 05:07:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:07:07,489 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8710 transitions. [2023-12-23 05:07:07,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-23 05:07:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8710 transitions. [2023-12-23 05:07:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:07:07,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:07:07,497 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:07,528 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 (12)] Forceful destruction successful, exit code 0 [2023-12-23 05:07:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 05:07:07,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:07:07,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:07:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 774952324, now seen corresponding path program 1 times [2023-12-23 05:07:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:07:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619357278] [2023-12-23 05:07:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:07:07,726 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 05:07:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:07:07,727 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:07:07,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-23 05:07:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:07:08,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:07:08,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:07:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 9668 proven. 66 refuted. 0 times theorem prover too weak. 23290 trivial. 0 not checked. [2023-12-23 05:07:13,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:07:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 318 proven. 66 refuted. 0 times theorem prover too weak. 32640 trivial. 0 not checked. [2023-12-23 05:07:16,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:07:16,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619357278] [2023-12-23 05:07:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619357278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:07:16,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:07:16,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:07:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868426335] [2023-12-23 05:07:16,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:07:16,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:07:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:07:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:07:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:07:16,356 INFO L87 Difference]: Start difference. First operand 5338 states and 8710 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-12-23 05:07:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:07:25,427 INFO L93 Difference]: Finished difference Result 10819 states and 17557 transitions. [2023-12-23 05:07:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:07:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 793 [2023-12-23 05:07:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:07:25,461 INFO L225 Difference]: With dead ends: 10819 [2023-12-23 05:07:25,461 INFO L226 Difference]: Without dead ends: 5482 [2023-12-23 05:07:25,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 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 05:07:25,471 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 735 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:07:25,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 954 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-23 05:07:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-12-23 05:07:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5362. [2023-12-23 05:07:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5362 states, 3547 states have (on average 1.480687905272061) internal successors, (5252), 3572 states have internal predecessors, (5252), 1724 states have call successors, (1724), 90 states have call predecessors, (1724), 90 states have return successors, (1724), 1699 states have call predecessors, (1724), 1724 states have call successors, (1724) [2023-12-23 05:07:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 8700 transitions. [2023-12-23 05:07:26,018 INFO L78 Accepts]: Start accepts. Automaton has 5362 states and 8700 transitions. Word has length 793 [2023-12-23 05:07:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:07:26,019 INFO L495 AbstractCegarLoop]: Abstraction has 5362 states and 8700 transitions. [2023-12-23 05:07:26,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-12-23 05:07:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5362 states and 8700 transitions. [2023-12-23 05:07:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:07:26,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:07:26,029 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:26,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-23 05:07:26,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:07:26,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:07:26,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:07:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash -246116030, now seen corresponding path program 1 times [2023-12-23 05:07:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:07:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503881893] [2023-12-23 05:07:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:07:26,251 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 05:07:26,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:07:26,252 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 05:07:26,252 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 05:07:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:07:27,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:07:27,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:08:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 2736 proven. 735 refuted. 0 times theorem prover too weak. 29553 trivial. 0 not checked. [2023-12-23 05:08:02,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:08:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 27 proven. 738 refuted. 0 times theorem prover too weak. 32259 trivial. 0 not checked. [2023-12-23 05:08:16,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:08:16,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503881893] [2023-12-23 05:08:16,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503881893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:08:16,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:08:16,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 05:08:16,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130897220] [2023-12-23 05:08:16,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:08:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 05:08:16,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:08:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 05:08:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:08:16,268 INFO L87 Difference]: Start difference. First operand 5362 states and 8700 transitions. Second operand has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (253), 3 states have call predecessors, (253), 7 states have return successors, (254), 3 states have call predecessors, (254), 3 states have call successors, (254) [2023-12-23 05:08:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:08:31,476 INFO L93 Difference]: Finished difference Result 11067 states and 17687 transitions. [2023-12-23 05:08:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 05:08:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (253), 3 states have call predecessors, (253), 7 states have return successors, (254), 3 states have call predecessors, (254), 3 states have call successors, (254) Word has length 793 [2023-12-23 05:08:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:08:31,500 INFO L225 Difference]: With dead ends: 11067 [2023-12-23 05:08:31,500 INFO L226 Difference]: Without dead ends: 5706 [2023-12-23 05:08:31,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1574 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-23 05:08:31,512 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 734 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:08:31,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1499 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-12-23 05:08:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2023-12-23 05:08:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5586. [2023-12-23 05:08:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 3715 states have (on average 1.4438761776581426) internal successors, (5364), 3740 states have internal predecessors, (5364), 1724 states have call successors, (1724), 146 states have call predecessors, (1724), 146 states have return successors, (1724), 1699 states have call predecessors, (1724), 1724 states have call successors, (1724) [2023-12-23 05:08:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 8812 transitions. [2023-12-23 05:08:31,944 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 8812 transitions. Word has length 793 [2023-12-23 05:08:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:08:31,945 INFO L495 AbstractCegarLoop]: Abstraction has 5586 states and 8812 transitions. [2023-12-23 05:08:31,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 3 states have call successors, (253), 3 states have call predecessors, (253), 7 states have return successors, (254), 3 states have call predecessors, (254), 3 states have call successors, (254) [2023-12-23 05:08:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 8812 transitions. [2023-12-23 05:08:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:08:31,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:08:31,952 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:31,982 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 05:08:32,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 05:08:32,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:08:32,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:08:32,167 INFO L85 PathProgramCache]: Analyzing trace with hash -639143040, now seen corresponding path program 1 times [2023-12-23 05:08:32,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:08:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699380685] [2023-12-23 05:08:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:08:32,168 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 05:08:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:08:32,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:08:32,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-23 05:08:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:08:33,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:08:33,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:08:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33024 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33024 trivial. 0 not checked. [2023-12-23 05:08:51,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:08:51,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:08:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699380685] [2023-12-23 05:08:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699380685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:08:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:08:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:08:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118906776] [2023-12-23 05:08:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:08:51,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:08:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:08:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:08:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 05:08:51,384 INFO L87 Difference]: Start difference. First operand 5586 states and 8812 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:08:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:08:55,337 INFO L93 Difference]: Finished difference Result 11171 states and 17623 transitions. [2023-12-23 05:08:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:08:55,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) Word has length 793 [2023-12-23 05:08:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:08:55,350 INFO L225 Difference]: With dead ends: 11171 [2023-12-23 05:08:55,350 INFO L226 Difference]: Without dead ends: 5586 [2023-12-23 05:08:55,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 05:08:55,358 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 136 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:08:55,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 799 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-23 05:08:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2023-12-23 05:08:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5586. [2023-12-23 05:08:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 3715 states have (on average 1.4363391655450874) internal successors, (5336), 3740 states have internal predecessors, (5336), 1724 states have call successors, (1724), 146 states have call predecessors, (1724), 146 states have return successors, (1724), 1699 states have call predecessors, (1724), 1724 states have call successors, (1724) [2023-12-23 05:08:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 8784 transitions. [2023-12-23 05:08:55,795 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 8784 transitions. Word has length 793 [2023-12-23 05:08:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:08:55,796 INFO L495 AbstractCegarLoop]: Abstraction has 5586 states and 8784 transitions. [2023-12-23 05:08:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 1 states have call predecessors, (129), 1 states have call successors, (129) [2023-12-23 05:08:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 8784 transitions. [2023-12-23 05:08:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-12-23 05:08:55,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:08:55,802 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:55,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-23 05:08:56,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:08:56,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:08:56,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:08:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash -640990082, now seen corresponding path program 1 times [2023-12-23 05:08:56,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:08:56,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643137080] [2023-12-23 05:08:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:08:56,030 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 05:08:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:08:56,032 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 05:08:56,056 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 05:08:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:08:57,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-23 05:08:57,173 INFO L285 TraceCheckSpWp]: Computing forward predicates...