/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-77.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 05:21:48,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 05:21:48,843 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 05:21:48,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 05:21:48,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 05:21:48,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 05:21:48,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 05:21:48,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 05:21:48,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 05:21:48,884 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 05:21:48,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 05:21:48,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 05:21:48,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 05:21:48,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 05:21:48,886 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 05:21:48,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 05:21:48,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 05:21:48,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 05:21:48,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 05:21:48,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 05:21:48,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 05:21:48,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 05:21:48,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 05:21:48,888 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 05:21:48,888 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 05:21:48,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 05:21:48,889 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 05:21:48,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 05:21:48,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 05:21:48,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 05:21:48,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 05:21:48,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 05:21:48,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 05:21:48,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 05:21:48,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:21:48,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 05:21:48,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 05:21:48,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 05:21:48,891 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 05:21:48,891 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 05:21:48,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 05:21:48,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 05:21:48,892 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 05:21:48,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 05:21:48,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 05:21:48,892 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 05:21:48,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 05:21:49,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 05:21:49,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 05:21:49,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 05:21:49,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 05:21:49,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 05:21:49,106 INFO L431 ainManager$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-77.i [2023-12-23 05:21:50,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 05:21:50,483 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 05:21:50,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-77.i [2023-12-23 05:21:50,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43cf7b12c/b94f07c7118841528505e82fea243989/FLAGabf0afbee [2023-12-23 05:21:50,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43cf7b12c/b94f07c7118841528505e82fea243989 [2023-12-23 05:21:50,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 05:21:50,509 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 05:21:50,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 05:21:50,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 05:21:50,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 05:21:50,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:50,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2684cbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50, skipping insertion in model container [2023-12-23 05:21:50,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:50,563 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 05:21:50,662 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-77.i[916,929] [2023-12-23 05:21:50,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:21:50,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 05:21:50,822 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-77.i[916,929] [2023-12-23 05:21:50,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 05:21:50,898 INFO L206 MainTranslator]: Completed translation [2023-12-23 05:21:50,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50 WrapperNode [2023-12-23 05:21:50,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 05:21:50,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 05:21:50,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 05:21:50,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 05:21:50,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:50,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:50,977 INFO L138 Inliner]: procedures = 27, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 677 [2023-12-23 05:21:50,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 05:21:50,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 05:21:50,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 05:21:50,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 05:21:50,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:50,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,038 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 05:21:51,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 05:21:51,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 05:21:51,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 05:21:51,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 05:21:51,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (1/1) ... [2023-12-23 05:21:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 05:21:51,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 05:21:51,188 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 05:21:51,253 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 05:21:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 05:21:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 05:21:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 05:21:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 05:21:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 05:21:51,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 05:21:51,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 05:21:51,401 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 05:22:27,782 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 05:22:27,824 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 05:22:27,825 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 05:22:27,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:22:27 BoogieIcfgContainer [2023-12-23 05:22:27,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 05:22:27,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 05:22:27,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 05:22:27,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 05:22:27,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:21:50" (1/3) ... [2023-12-23 05:22:27,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7874b8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:22:27, skipping insertion in model container [2023-12-23 05:22:27,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:21:50" (2/3) ... [2023-12-23 05:22:27,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7874b8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:22:27, skipping insertion in model container [2023-12-23 05:22:27,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:22:27" (3/3) ... [2023-12-23 05:22:27,830 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-77.i [2023-12-23 05:22:27,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 05:22:27,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 05:22:27,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 05:22:27,908 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;@6a9b7d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 05:22:27,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 05:22:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 191 states have (on average 1.6282722513089005) internal successors, (311), 192 states have internal predecessors, (311), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 05:22:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-23 05:22:27,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:22:27,940 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:27,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:22:27,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:22:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash 651113599, now seen corresponding path program 1 times [2023-12-23 05:22:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:22:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678702353] [2023-12-23 05:22:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:22:27,966 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 05:22:27,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:22:27,990 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 05:22:28,000 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 05:22:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:22:29,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 05:22:29,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:22:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 3042 proven. 0 refuted. 0 times theorem prover too weak. 15970 trivial. 0 not checked. [2023-12-23 05:22:29,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:22:29,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:22:29,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678702353] [2023-12-23 05:22:29,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678702353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:22:29,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:22:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 05:22:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684493556] [2023-12-23 05:22:29,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:22:29,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 05:22:29,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:22:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 05:22:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 05:22:29,702 INFO L87 Difference]: Start difference. First operand has 292 states, 191 states have (on average 1.6282722513089005) internal successors, (311), 192 states have internal predecessors, (311), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 05:22:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:22:30,180 INFO L93 Difference]: Finished difference Result 579 states and 1106 transitions. [2023-12-23 05:22:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 05:22:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 629 [2023-12-23 05:22:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:22:30,209 INFO L225 Difference]: With dead ends: 579 [2023-12-23 05:22:30,209 INFO L226 Difference]: Without dead ends: 288 [2023-12-23 05:22:30,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 628 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 05:22:30,215 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:22:30,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 05:22:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-23 05:22:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-12-23 05:22:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 188 states have (on average 1.5797872340425532) internal successors, (297), 188 states have internal predecessors, (297), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 05:22:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 493 transitions. [2023-12-23 05:22:30,291 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 493 transitions. Word has length 629 [2023-12-23 05:22:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:22:30,291 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 493 transitions. [2023-12-23 05:22:30,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 05:22:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 493 transitions. [2023-12-23 05:22:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-23 05:22:30,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:22:30,302 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:30,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 05:22:30,521 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 05:22:30,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:22:30,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:22:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1112124319, now seen corresponding path program 1 times [2023-12-23 05:22:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:22:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992606913] [2023-12-23 05:22:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:22:30,524 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 05:22:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:22:30,526 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 05:22:30,558 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 05:22:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:22:32,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:22:32,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:22:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9363 proven. 168 refuted. 0 times theorem prover too weak. 9481 trivial. 0 not checked. [2023-12-23 05:22:36,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:22:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 123 proven. 168 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 05:22:38,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:22:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992606913] [2023-12-23 05:22:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992606913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:22:38,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:22:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:22:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180055144] [2023-12-23 05:22:38,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:22:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:22:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:22:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:22:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:22:38,084 INFO L87 Difference]: Start difference. First operand 288 states and 493 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-23 05:22:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:22:42,898 INFO L93 Difference]: Finished difference Result 578 states and 985 transitions. [2023-12-23 05:22:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 05:22:42,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 630 [2023-12-23 05:22:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:22:42,921 INFO L225 Difference]: With dead ends: 578 [2023-12-23 05:22:42,921 INFO L226 Difference]: Without dead ends: 291 [2023-12-23 05:22:42,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1252 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:22:42,924 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 510 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-23 05:22:42,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 905 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-23 05:22:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-23 05:22:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2023-12-23 05:22:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 188 states have (on average 1.5372340425531914) internal successors, (289), 188 states have internal predecessors, (289), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 05:22:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 485 transitions. [2023-12-23 05:22:42,953 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 485 transitions. Word has length 630 [2023-12-23 05:22:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:22:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 485 transitions. [2023-12-23 05:22:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-23 05:22:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 485 transitions. [2023-12-23 05:22:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:22:42,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:22:42,959 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:43,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 05:22:43,184 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 05:22:43,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:22:43,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:22:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1429418500, now seen corresponding path program 1 times [2023-12-23 05:22:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:22:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208052547] [2023-12-23 05:22:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:22:43,187 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 05:22:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:22:43,188 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 05:22:43,201 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 05:22:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:22:44,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:22:44,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:22:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9513 proven. 159 refuted. 0 times theorem prover too weak. 9340 trivial. 0 not checked. [2023-12-23 05:22:49,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:22:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 132 proven. 159 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 05:22:51,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:22:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208052547] [2023-12-23 05:22:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208052547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:22:51,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:22:51,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 05:22:51,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717492796] [2023-12-23 05:22:51,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:22:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 05:22:51,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:22:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 05:22:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 05:22:51,367 INFO L87 Difference]: Start difference. First operand 289 states and 485 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 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 05:22:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:22:55,613 INFO L93 Difference]: Finished difference Result 583 states and 973 transitions. [2023-12-23 05:22:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 05:22:55,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 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 631 [2023-12-23 05:22:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:22:55,639 INFO L225 Difference]: With dead ends: 583 [2023-12-23 05:22:55,639 INFO L226 Difference]: Without dead ends: 295 [2023-12-23 05:22:55,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1254 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:22:55,641 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 596 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-23 05:22:55,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 895 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-23 05:22:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-23 05:22:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2023-12-23 05:22:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 189 states have (on average 1.5132275132275133) internal successors, (286), 189 states have internal predecessors, (286), 98 states have call successors, (98), 3 states have call predecessors, (98), 3 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 05:22:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 482 transitions. [2023-12-23 05:22:55,670 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 482 transitions. Word has length 631 [2023-12-23 05:22:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:22:55,673 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 482 transitions. [2023-12-23 05:22:55,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 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 05:22:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 482 transitions. [2023-12-23 05:22:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:22:55,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:22:55,678 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:55,725 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 05:22:55,892 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 05:22:55,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:22:55,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:22:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 432119492, now seen corresponding path program 1 times [2023-12-23 05:22:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:22:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618055130] [2023-12-23 05:22:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:22:55,895 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 05:22:55,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:22:55,896 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 05:22:55,928 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 05:22:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:22:57,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:22:57,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7468 proven. 144 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-23 05:23:02,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:23:03,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:23:03,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618055130] [2023-12-23 05:23:03,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618055130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:23:03,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789851001] [2023-12-23 05:23:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:03,613 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:03,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:23:03,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:23:03,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-23 05:23:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:04,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:23:04,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:23:05,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:23:05,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789851001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:23:05,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:23:05,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-23 05:23:05,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536946168] [2023-12-23 05:23:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:23:05,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:23:05,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:23:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:23:05,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:05,580 INFO L87 Difference]: Start difference. First operand 291 states and 482 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:23:06,870 INFO L93 Difference]: Finished difference Result 817 states and 1354 transitions. [2023-12-23 05:23:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:23:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-23 05:23:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:23:06,874 INFO L225 Difference]: With dead ends: 817 [2023-12-23 05:23:06,875 INFO L226 Difference]: Without dead ends: 527 [2023-12-23 05:23:06,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:06,876 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 467 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:23:06,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1232 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 05:23:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-23 05:23:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 522. [2023-12-23 05:23:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 334 states have (on average 1.4970059880239521) internal successors, (500), 335 states have internal predecessors, (500), 181 states have call successors, (181), 6 states have call predecessors, (181), 6 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-12-23 05:23:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 862 transitions. [2023-12-23 05:23:06,906 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 862 transitions. Word has length 631 [2023-12-23 05:23:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:23:06,907 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 862 transitions. [2023-12-23 05:23:06,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 862 transitions. [2023-12-23 05:23:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:23:06,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:23:06,911 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:06,948 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 05:23:07,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:07,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:23:07,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:23:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1562025214, now seen corresponding path program 1 times [2023-12-23 05:23:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:23:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29409883] [2023-12-23 05:23:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:07,326 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 05:23:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:23:07,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:23:07,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 05:23:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:08,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:23:08,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7468 proven. 144 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-23 05:23:13,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:23:14,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:23:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29409883] [2023-12-23 05:23:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29409883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:23:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123684689] [2023-12-23 05:23:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:23:14,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:23:14,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 05:23:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:16,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:23:16,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:23:16,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:23:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123684689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:23:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:23:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-23 05:23:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114689099] [2023-12-23 05:23:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:23:16,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:23:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:23:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:23:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:16,696 INFO L87 Difference]: Start difference. First operand 522 states and 862 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:18,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 05:23:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:23:19,238 INFO L93 Difference]: Finished difference Result 1054 states and 1734 transitions. [2023-12-23 05:23:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:23:19,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-23 05:23:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:23:19,243 INFO L225 Difference]: With dead ends: 1054 [2023-12-23 05:23:19,243 INFO L226 Difference]: Without dead ends: 516 [2023-12-23 05:23:19,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:19,246 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 233 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:23:19,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1550 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-23 05:23:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-23 05:23:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 502. [2023-12-23 05:23:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 313 states have (on average 1.4600638977635783) internal successors, (457), 314 states have internal predecessors, (457), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-12-23 05:23:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 819 transitions. [2023-12-23 05:23:19,288 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 819 transitions. Word has length 631 [2023-12-23 05:23:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:23:19,288 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 819 transitions. [2023-12-23 05:23:19,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 819 transitions. [2023-12-23 05:23:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:23:19,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:23:19,293 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:19,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:19,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:19,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:23:19,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:23:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2016793984, now seen corresponding path program 1 times [2023-12-23 05:23:19,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:23:19,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753201132] [2023-12-23 05:23:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:19,719 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 05:23:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:23:19,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:23:19,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 05:23:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:21,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:23:21,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7468 proven. 144 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-23 05:23:26,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:23:27,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:23:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753201132] [2023-12-23 05:23:27,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753201132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:23:27,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2030602261] [2023-12-23 05:23:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:27,277 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:27,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:23:27,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:23:27,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 05:23:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:28,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 05:23:28,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:23:31,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:23:31,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2030602261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:23:31,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:23:31,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-23 05:23:31,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462826140] [2023-12-23 05:23:31,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:23:31,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 05:23:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:23:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 05:23:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-23 05:23:31,884 INFO L87 Difference]: Start difference. First operand 502 states and 819 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:23:36,101 INFO L93 Difference]: Finished difference Result 1681 states and 2740 transitions. [2023-12-23 05:23:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 05:23:36,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-23 05:23:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:23:36,108 INFO L225 Difference]: With dead ends: 1681 [2023-12-23 05:23:36,108 INFO L226 Difference]: Without dead ends: 1172 [2023-12-23 05:23:36,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-23 05:23:36,110 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 606 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:23:36,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 2200 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-23 05:23:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-12-23 05:23:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 768. [2023-12-23 05:23:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 495 states have (on average 1.496969696969697) internal successors, (741), 498 states have internal predecessors, (741), 263 states have call successors, (263), 9 states have call predecessors, (263), 9 states have return successors, (263), 260 states have call predecessors, (263), 263 states have call successors, (263) [2023-12-23 05:23:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1267 transitions. [2023-12-23 05:23:36,173 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1267 transitions. Word has length 631 [2023-12-23 05:23:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:23:36,174 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1267 transitions. [2023-12-23 05:23:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1267 transitions. [2023-12-23 05:23:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:23:36,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:23:36,178 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:36,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:36,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:36,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:36,594 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:23:36,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:23:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1199145534, now seen corresponding path program 1 times [2023-12-23 05:23:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:23:36,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519090995] [2023-12-23 05:23:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:36,596 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 05:23:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:23:36,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:23:36,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-23 05:23:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:38,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:23:38,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7468 proven. 144 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-23 05:23:43,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:23:44,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:23:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519090995] [2023-12-23 05:23:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519090995] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:23:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2088000603] [2023-12-23 05:23:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:23:44,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:23:44,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-23 05:23:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:45,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 05:23:45,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:23:45,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:23:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2088000603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:23:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:23:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-23 05:23:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500531673] [2023-12-23 05:23:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:23:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:23:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:23:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:23:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:45,881 INFO L87 Difference]: Start difference. First operand 768 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:48,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:23:48,310 INFO L93 Difference]: Finished difference Result 2868 states and 4691 transitions. [2023-12-23 05:23:48,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:23:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-23 05:23:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:23:48,322 INFO L225 Difference]: With dead ends: 2868 [2023-12-23 05:23:48,322 INFO L226 Difference]: Without dead ends: 2101 [2023-12-23 05:23:48,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:23:48,326 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 731 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:23:48,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1265 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-23 05:23:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-12-23 05:23:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2093. [2023-12-23 05:23:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 1299 states have (on average 1.449576597382602) internal successors, (1883), 1309 states have internal predecessors, (1883), 766 states have call successors, (766), 27 states have call predecessors, (766), 27 states have return successors, (766), 756 states have call predecessors, (766), 766 states have call successors, (766) [2023-12-23 05:23:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3415 transitions. [2023-12-23 05:23:48,522 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3415 transitions. Word has length 631 [2023-12-23 05:23:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:23:48,523 INFO L495 AbstractCegarLoop]: Abstraction has 2093 states and 3415 transitions. [2023-12-23 05:23:48,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:23:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3415 transitions. [2023-12-23 05:23:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-23 05:23:48,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:23:48,527 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:23:48,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:48,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-23 05:23:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:48,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:23:48,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:23:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1406878020, now seen corresponding path program 1 times [2023-12-23 05:23:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:23:48,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358628120] [2023-12-23 05:23:48,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:48,942 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 05:23:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:23:48,943 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 05:23:48,944 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 05:23:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:23:50,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 05:23:50,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:23:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7468 proven. 144 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-23 05:23:55,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:23:56,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:23:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358628120] [2023-12-23 05:23:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358628120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:23:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [247974217] [2023-12-23 05:23:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:23:56,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:23:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:23:56,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:23:56,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-23 05:24:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:24:00,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 05:24:00,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:24:02,436 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:24:02,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:24:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [247974217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:24:02,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 05:24:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-23 05:24:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783654073] [2023-12-23 05:24:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:24:02,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 05:24:02,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:24:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 05:24:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:24:02,438 INFO L87 Difference]: Start difference. First operand 2093 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:24:07,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:24:11,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:24:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:24:30,397 INFO L93 Difference]: Finished difference Result 7591 states and 12375 transitions. [2023-12-23 05:24:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 05:24:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 631 [2023-12-23 05:24:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:24:30,426 INFO L225 Difference]: With dead ends: 7591 [2023-12-23 05:24:30,426 INFO L226 Difference]: Without dead ends: 5499 [2023-12-23 05:24:30,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-23 05:24:30,433 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 702 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 109 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-23 05:24:30,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1350 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 147 Invalid, 2 Unknown, 0 Unchecked, 27.6s Time] [2023-12-23 05:24:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2023-12-23 05:24:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 3947. [2023-12-23 05:24:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 2556 states have (on average 1.488262910798122) internal successors, (3804), 2578 states have internal predecessors, (3804), 1336 states have call successors, (1336), 54 states have call predecessors, (1336), 54 states have return successors, (1336), 1314 states have call predecessors, (1336), 1336 states have call successors, (1336) [2023-12-23 05:24:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 6476 transitions. [2023-12-23 05:24:30,752 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 6476 transitions. Word has length 631 [2023-12-23 05:24:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:24:30,753 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 6476 transitions. [2023-12-23 05:24:30,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:24:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 6476 transitions. [2023-12-23 05:24:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 05:24:30,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:24:30,758 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:30,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-23 05:24:31,008 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 05:24:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:24:31,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:24:31,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:24:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1181352251, now seen corresponding path program 1 times [2023-12-23 05:24:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:24:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009325478] [2023-12-23 05:24:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:24:31,175 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 05:24:31,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:24:31,177 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 05:24:31,179 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 05:24:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:24:32,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:24:32,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:24:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8411 proven. 390 refuted. 0 times theorem prover too weak. 10211 trivial. 0 not checked. [2023-12-23 05:24:42,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:24:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 93 proven. 198 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 05:24:45,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:24:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009325478] [2023-12-23 05:24:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009325478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:24:45,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:24:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2023-12-23 05:24:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992157304] [2023-12-23 05:24:45,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:24:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-23 05:24:45,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:24:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-23 05:24:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-23 05:24:45,166 INFO L87 Difference]: Start difference. First operand 3947 states and 6476 transitions. Second operand has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 10 states have internal predecessors, (239), 4 states have call successors, (164), 3 states have call predecessors, (164), 5 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) [2023-12-23 05:24:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:24:51,436 INFO L93 Difference]: Finished difference Result 8169 states and 13179 transitions. [2023-12-23 05:24:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 05:24:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 10 states have internal predecessors, (239), 4 states have call successors, (164), 3 states have call predecessors, (164), 5 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) Word has length 632 [2023-12-23 05:24:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:24:51,476 INFO L225 Difference]: With dead ends: 8169 [2023-12-23 05:24:51,476 INFO L226 Difference]: Without dead ends: 4223 [2023-12-23 05:24:51,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1253 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2023-12-23 05:24:51,486 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 232 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-23 05:24:51,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1132 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-23 05:24:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2023-12-23 05:24:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 4139. [2023-12-23 05:24:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 2700 states have (on average 1.4533333333333334) internal successors, (3924), 2722 states have internal predecessors, (3924), 1336 states have call successors, (1336), 102 states have call predecessors, (1336), 102 states have return successors, (1336), 1314 states have call predecessors, (1336), 1336 states have call successors, (1336) [2023-12-23 05:24:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6596 transitions. [2023-12-23 05:24:51,846 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6596 transitions. Word has length 632 [2023-12-23 05:24:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:24:51,846 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 6596 transitions. [2023-12-23 05:24:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.727272727272727) internal successors, (239), 10 states have internal predecessors, (239), 4 states have call successors, (164), 3 states have call predecessors, (164), 5 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) [2023-12-23 05:24:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6596 transitions. [2023-12-23 05:24:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 05:24:51,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:24:51,852 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:51,891 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 05:24:52,080 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 05:24:52,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:24:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:24:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1903516894, now seen corresponding path program 1 times [2023-12-23 05:24:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:24:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930173984] [2023-12-23 05:24:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:24:52,083 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 05:24:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:24:52,084 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 05:24:52,124 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 05:24:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:24:53,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 05:24:53,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:25:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12357 proven. 369 refuted. 0 times theorem prover too weak. 6286 trivial. 0 not checked. [2023-12-23 05:25:04,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:25:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 486 proven. 378 refuted. 0 times theorem prover too weak. 18148 trivial. 0 not checked. [2023-12-23 05:25:10,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:25:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930173984] [2023-12-23 05:25:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930173984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 05:25:10,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:25:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-12-23 05:25:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866269040] [2023-12-23 05:25:10,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:25:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-23 05:25:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:25:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-23 05:25:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 05:25:10,140 INFO L87 Difference]: Start difference. First operand 4139 states and 6596 transitions. Second operand has 18 states, 18 states have (on average 9.61111111111111) internal successors, (173), 18 states have internal predecessors, (173), 4 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 4 states have call predecessors, (155), 4 states have call successors, (155) [2023-12-23 05:25:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:25:23,959 INFO L93 Difference]: Finished difference Result 11099 states and 17432 transitions. [2023-12-23 05:25:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-23 05:25:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.61111111111111) internal successors, (173), 18 states have internal predecessors, (173), 4 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 4 states have call predecessors, (155), 4 states have call successors, (155) Word has length 633 [2023-12-23 05:25:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:25:23,991 INFO L225 Difference]: With dead ends: 11099 [2023-12-23 05:25:23,991 INFO L226 Difference]: Without dead ends: 6961 [2023-12-23 05:25:24,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1299 GetRequests, 1251 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2023-12-23 05:25:24,000 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1322 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-23 05:25:24,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 1731 Invalid, 2001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [518 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-23 05:25:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2023-12-23 05:25:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 5459. [2023-12-23 05:25:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 3510 states have (on average 1.4062678062678062) internal successors, (4936), 3532 states have internal predecessors, (4936), 1770 states have call successors, (1770), 178 states have call predecessors, (1770), 178 states have return successors, (1770), 1748 states have call predecessors, (1770), 1770 states have call successors, (1770) [2023-12-23 05:25:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 8476 transitions. [2023-12-23 05:25:24,492 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 8476 transitions. Word has length 633 [2023-12-23 05:25:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:25:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 5459 states and 8476 transitions. [2023-12-23 05:25:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.61111111111111) internal successors, (173), 18 states have internal predecessors, (173), 4 states have call successors, (154), 4 states have call predecessors, (154), 10 states have return successors, (155), 4 states have call predecessors, (155), 4 states have call successors, (155) [2023-12-23 05:25:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 8476 transitions. [2023-12-23 05:25:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 05:25:24,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:25:24,497 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:24,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-23 05:25:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:25:24,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:25:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:25:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1981327074, now seen corresponding path program 1 times [2023-12-23 05:25:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:25:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115580378] [2023-12-23 05:25:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:25:24,727 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 05:25:24,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:25:24,729 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:25:24,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-23 05:25:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:25:26,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 05:25:26,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:25:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 05:25:26,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 05:25:26,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:25:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115580378] [2023-12-23 05:25:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115580378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 05:25:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 05:25:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 05:25:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027330019] [2023-12-23 05:25:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 05:25:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 05:25:26,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:25:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 05:25:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:25:26,505 INFO L87 Difference]: Start difference. First operand 5459 states and 8476 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:25:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 05:25:27,159 INFO L93 Difference]: Finished difference Result 10891 states and 16899 transitions. [2023-12-23 05:25:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 05:25:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 633 [2023-12-23 05:25:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 05:25:27,209 INFO L225 Difference]: With dead ends: 10891 [2023-12-23 05:25:27,209 INFO L226 Difference]: Without dead ends: 5433 [2023-12-23 05:25:27,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 05:25:27,220 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 3 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 05:25:27,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 930 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 05:25:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2023-12-23 05:25:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5433. [2023-12-23 05:25:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 3484 states have (on average 1.394374282433984) internal successors, (4858), 3506 states have internal predecessors, (4858), 1770 states have call successors, (1770), 178 states have call predecessors, (1770), 178 states have return successors, (1770), 1748 states have call predecessors, (1770), 1770 states have call successors, (1770) [2023-12-23 05:25:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 8398 transitions. [2023-12-23 05:25:27,682 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 8398 transitions. Word has length 633 [2023-12-23 05:25:27,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 05:25:27,682 INFO L495 AbstractCegarLoop]: Abstraction has 5433 states and 8398 transitions. [2023-12-23 05:25:27,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 05:25:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 8398 transitions. [2023-12-23 05:25:27,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 05:25:27,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 05:25:27,687 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:27,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-23 05:25:27,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:25:27,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 05:25:27,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 05:25:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1973700578, now seen corresponding path program 1 times [2023-12-23 05:25:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 05:25:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305921623] [2023-12-23 05:25:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:25:27,906 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 05:25:27,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 05:25:27,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 05:25:27,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-23 05:25:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:25:29,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-23 05:25:29,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:26:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12568 proven. 618 refuted. 0 times theorem prover too weak. 5826 trivial. 0 not checked. [2023-12-23 05:26:00,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:26:54,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 05:26:54,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305921623] [2023-12-23 05:26:54,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305921623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:26:54,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1701599085] [2023-12-23 05:26:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 05:26:54,205 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 05:26:54,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 05:26:54,207 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 05:26:54,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 05:27:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 05:27:01,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 05:27:01,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 05:27:21,998 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 21 DAG size of output: 20 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 05:27:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9493 proven. 129 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2023-12-23 05:27:33,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 05:28:03,320 WARN L293 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 05:28:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1701599085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 05:28:41,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 05:28:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 21 [2023-12-23 05:28:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242718929] [2023-12-23 05:28:41,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 05:28:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-23 05:28:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 05:28:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-23 05:28:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=736, Unknown=1, NotChecked=0, Total=870 [2023-12-23 05:28:41,896 INFO L87 Difference]: Start difference. First operand 5433 states and 8398 transitions. Second operand has 21 states, 21 states have (on average 13.476190476190476) internal successors, (283), 20 states have internal predecessors, (283), 7 states have call successors, (196), 7 states have call predecessors, (196), 11 states have return successors, (196), 7 states have call predecessors, (196), 7 states have call successors, (196) [2023-12-23 05:29:06,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:09,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:11,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:13,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:15,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:17,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:29:28,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:30:28,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:31:33,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:31:36,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:31:37,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:03,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:07,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:11,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:15,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:19,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:23,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:27,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:33,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:37,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:41,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:45,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:50,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:54,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:32:58,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:02,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:06,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:10,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:14,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:18,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:21,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:25,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:28,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:41,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:33:46,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:34:06,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:09,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:16,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:19,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:24,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:46,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:53,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:35:57,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:36:01,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:36:04,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:36:06,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 05:36:11,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-23 05:36:22,174 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:36:22,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:36:22,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 05:36:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-23 05:36:22,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1413 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 185.1s TimeCoverageRelationStatistics Valid=1030, Invalid=3388, Unknown=4, NotChecked=0, Total=4422 [2023-12-23 05:36:22,274 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 3446 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 768 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 302.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3470 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 322.1s IncrementalHoareTripleChecker+Time [2023-12-23 05:36:22,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3470 Valid, 3318 Invalid, 3830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [768 Valid, 3036 Invalid, 26 Unknown, 0 Unchecked, 322.1s Time] [2023-12-23 05:36:22,276 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 05:36:22,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-23 05:36:22,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-23 05:36:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 05:36:22,677 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5433states) and FLOYD_HOARE automaton (currently 42 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (10499 states constructed, input type IntersectNwa). [2023-12-23 05:36:22,681 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 05:36:22,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 05:36:22,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:36:22 BoogieIcfgContainer [2023-12-23 05:36:22,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 05:36:22,686 INFO L158 Benchmark]: Toolchain (without parser) took 872176.41ms. Allocated memory was 249.6MB in the beginning and 528.5MB in the end (delta: 278.9MB). Free memory was 198.9MB in the beginning and 223.3MB in the end (delta: -24.4MB). Peak memory consumption was 357.2MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,686 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 05:36:22,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.25ms. Allocated memory is still 249.6MB. Free memory was 198.5MB in the beginning and 167.3MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.89ms. Allocated memory is still 249.6MB. Free memory was 167.3MB in the beginning and 161.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,687 INFO L158 Benchmark]: Boogie Preprocessor took 151.54ms. Allocated memory is still 249.6MB. Free memory was 161.5MB in the beginning and 152.8MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,687 INFO L158 Benchmark]: RCFGBuilder took 36694.63ms. Allocated memory is still 249.6MB. Free memory was 152.4MB in the beginning and 161.0MB in the end (delta: -8.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,689 INFO L158 Benchmark]: TraceAbstraction took 834858.54ms. Allocated memory was 249.6MB in the beginning and 528.5MB in the end (delta: 278.9MB). Free memory was 160.0MB in the beginning and 223.3MB in the end (delta: -63.3MB). Peak memory consumption was 317.3MB. Max. memory is 8.0GB. [2023-12-23 05:36:22,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 388.25ms. Allocated memory is still 249.6MB. Free memory was 198.5MB in the beginning and 167.3MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.89ms. Allocated memory is still 249.6MB. Free memory was 167.3MB in the beginning and 161.5MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 151.54ms. Allocated memory is still 249.6MB. Free memory was 161.5MB in the beginning and 152.8MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 36694.63ms. Allocated memory is still 249.6MB. Free memory was 152.4MB in the beginning and 161.0MB in the end (delta: -8.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 834858.54ms. Allocated memory was 249.6MB in the beginning and 528.5MB in the end (delta: 278.9MB). Free memory was 160.0MB in the beginning and 223.3MB in the end (delta: -63.3MB). Peak memory consumption was 317.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (5433states) and FLOYD_HOARE automaton (currently 42 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (10499 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 292 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 834.8s, OverallIterations: 12, TraceHistogramMax: 98, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 529.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 mSolverCounterUnknown, 9028 SdHoareTripleChecker+Valid, 384.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8848 mSDsluCounter, 16998 SdHoareTripleChecker+Invalid, 361.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10752 mSDsCounter, 2340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7288 IncrementalHoareTripleChecker+Invalid, 9656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2340 mSolverCounterUnsat, 6246 mSDtfsCounter, 7288 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14558 GetRequests, 14347 SyntacticMatches, 6 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 197.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5459occurred in iteration=10, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 3575 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 31.6s SatisfiabilityAnalysisTime, 265.3s InterpolantComputationTime, 11364 NumberOfCodeBlocks, 11364 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 13868 ConstructedInterpolants, 232 QuantifiedInterpolants, 43313 SizeOfPredicates, 72 NumberOfNonLiveVariables, 18486 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 414808/418264 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown