/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_variablewrapping_wrapper-s_file-13.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 17:31:35,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 17:31:35,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 17:31:35,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 17:31:35,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 17:31:35,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 17:31:35,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 17:31:35,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 17:31:35,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 17:31:35,811 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 17:31:35,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 17:31:35,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 17:31:35,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 17:31:35,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 17:31:35,814 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 17:31:35,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 17:31:35,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 17:31:35,815 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 17:31:35,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 17:31:35,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 17:31:35,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 17:31:35,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 17:31:35,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 17:31:35,816 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 17:31:35,816 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 17:31:35,817 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 17:31:35,817 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 17:31:35,817 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 17:31:35,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 17:31:35,817 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 17:31:35,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 17:31:35,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 17:31:35,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 17:31:35,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 17:31:35,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:31:35,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 17:31:35,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 17:31:35,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 17:31:35,820 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 17:31:35,820 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 17:31:35,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 17:31:35,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 17:31:35,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 17:31:35,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 17:31:35,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 17:31:35,822 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 17:31:35,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 17:31:36,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 17:31:36,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 17:31:36,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 17:31:36,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 17:31:36,103 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 17:31:36,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-13.i [2023-12-24 17:31:37,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 17:31:37,455 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 17:31:37,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-13.i [2023-12-24 17:31:37,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5648fb17d/4a513887732d4c1fbea811953cda8645/FLAG19e3a09f5 [2023-12-24 17:31:37,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5648fb17d/4a513887732d4c1fbea811953cda8645 [2023-12-24 17:31:37,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 17:31:37,481 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 17:31:37,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 17:31:37,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 17:31:37,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 17:31:37,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a90029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37, skipping insertion in model container [2023-12-24 17:31:37,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 17:31:37,640 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_variablewrapping_wrapper-s_file-13.i[916,929] [2023-12-24 17:31:37,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:31:37,705 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 17:31:37,715 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_variablewrapping_wrapper-s_file-13.i[916,929] [2023-12-24 17:31:37,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:31:37,790 INFO L206 MainTranslator]: Completed translation [2023-12-24 17:31:37,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37 WrapperNode [2023-12-24 17:31:37,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 17:31:37,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 17:31:37,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 17:31:37,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 17:31:37,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,863 INFO L138 Inliner]: procedures = 33, calls = 142, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 464 [2023-12-24 17:31:37,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 17:31:37,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 17:31:37,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 17:31:37,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 17:31:37,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,919 INFO L175 MemorySlicer]: Split 115 memory accesses to 2 slices as follows [2, 113]. 98 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 13]. The 15 writes are split as follows [0, 15]. [2023-12-24 17:31:37,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 17:31:37,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 17:31:37,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 17:31:37,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 17:31:37,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (1/1) ... [2023-12-24 17:31:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:31:37,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 17:31:38,018 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) [2023-12-24 17:31:38,046 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 [2023-12-24 17:31:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 17:31:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 17:31:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 17:31:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 17:31:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 17:31:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 17:31:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 17:31:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 17:31:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 17:31:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 17:31:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 17:31:38,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 17:31:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 17:31:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 17:31:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 17:31:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 17:31:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 17:31:38,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 17:31:38,201 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 17:31:38,203 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 17:31:44,585 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 17:31:44,619 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 17:31:44,620 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 17:31:44,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:31:44 BoogieIcfgContainer [2023-12-24 17:31:44,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 17:31:44,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 17:31:44,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 17:31:44,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 17:31:44,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:31:37" (1/3) ... [2023-12-24 17:31:44,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1b2dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:31:44, skipping insertion in model container [2023-12-24 17:31:44,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:31:37" (2/3) ... [2023-12-24 17:31:44,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1b2dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:31:44, skipping insertion in model container [2023-12-24 17:31:44,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:31:44" (3/3) ... [2023-12-24 17:31:44,628 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-13.i [2023-12-24 17:31:44,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 17:31:44,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 17:31:44,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 17:31:44,702 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;@5ff6b5d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 17:31:44,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 17:31:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 88 states have internal predecessors, (129), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:31:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:31:44,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:31:44,717 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:31:44,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:31:44,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:31:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash -342532188, now seen corresponding path program 1 times [2023-12-24 17:31:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:31:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004675134] [2023-12-24 17:31:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:31:44,732 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 [2023-12-24 17:31:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:31:44,734 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) [2023-12-24 17:31:44,735 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 [2023-12-24 17:31:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:31:45,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 17:31:45,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:31:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-24 17:31:45,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:31:45,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:31:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004675134] [2023-12-24 17:31:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004675134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:31:45,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:31:45,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 17:31:45,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207582126] [2023-12-24 17:31:45,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:31:45,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 17:31:45,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:31:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 17:31:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:31:45,311 INFO L87 Difference]: Start difference. First operand has 105 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 88 states have internal predecessors, (129), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:31:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:31:45,393 INFO L93 Difference]: Finished difference Result 207 states and 331 transitions. [2023-12-24 17:31:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 17:31:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2023-12-24 17:31:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:31:45,404 INFO L225 Difference]: With dead ends: 207 [2023-12-24 17:31:45,404 INFO L226 Difference]: Without dead ends: 103 [2023-12-24 17:31:45,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:31:45,413 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:31:45,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:31:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-24 17:31:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-24 17:31:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:31:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 154 transitions. [2023-12-24 17:31:45,475 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 154 transitions. Word has length 126 [2023-12-24 17:31:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:31:45,475 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 154 transitions. [2023-12-24 17:31:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:31:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 154 transitions. [2023-12-24 17:31:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:31:45,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:31:45,483 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:31:45,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 17:31:45,688 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 [2023-12-24 17:31:45,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:31:45,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:31:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash 219295054, now seen corresponding path program 1 times [2023-12-24 17:31:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:31:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217689748] [2023-12-24 17:31:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:31:45,691 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 [2023-12-24 17:31:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:31:45,692 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) [2023-12-24 17:31:45,697 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 [2023-12-24 17:31:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:31:46,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:31:46,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:31:46,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 17:31:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:31:46,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:31:46,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:31:46,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217689748] [2023-12-24 17:31:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217689748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:31:46,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:31:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:31:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664944418] [2023-12-24 17:31:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:31:46,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:31:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:31:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:31:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:31:46,404 INFO L87 Difference]: Start difference. First operand 103 states and 154 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:31:51,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:31:54,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:55,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:31:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:31:55,826 INFO L93 Difference]: Finished difference Result 262 states and 393 transitions. [2023-12-24 17:31:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:31:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 126 [2023-12-24 17:31:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:31:55,863 INFO L225 Difference]: With dead ends: 262 [2023-12-24 17:31:55,863 INFO L226 Difference]: Without dead ends: 160 [2023-12-24 17:31:55,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:31:55,865 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 119 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:31:55,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 510 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-24 17:31:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-24 17:31:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 109. [2023-12-24 17:31:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 92 states have (on average 1.434782608695652) internal successors, (132), 92 states have internal predecessors, (132), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:31:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 162 transitions. [2023-12-24 17:31:55,877 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 162 transitions. Word has length 126 [2023-12-24 17:31:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:31:55,879 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 162 transitions. [2023-12-24 17:31:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:31:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 162 transitions. [2023-12-24 17:31:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-24 17:31:55,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:31:55,881 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:31:55,899 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 [2023-12-24 17:31:56,095 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 [2023-12-24 17:31:56,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:31:56,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:31:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -791822196, now seen corresponding path program 1 times [2023-12-24 17:31:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:31:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279768336] [2023-12-24 17:31:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:31:56,097 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 [2023-12-24 17:31:56,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:31:56,100 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) [2023-12-24 17:31:56,100 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 [2023-12-24 17:31:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:31:56,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:31:56,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:31:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:31:56,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:31:56,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:31:56,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279768336] [2023-12-24 17:31:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279768336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:31:56,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:31:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:31:56,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831652991] [2023-12-24 17:31:56,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:31:56,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:31:56,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:31:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:31:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:31:56,580 INFO L87 Difference]: Start difference. First operand 109 states and 162 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:31:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:31:56,671 INFO L93 Difference]: Finished difference Result 239 states and 357 transitions. [2023-12-24 17:31:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:31:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 126 [2023-12-24 17:31:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:31:56,676 INFO L225 Difference]: With dead ends: 239 [2023-12-24 17:31:56,676 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 17:31:56,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:31:56,677 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:31:56,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 483 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:31:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 17:31:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2023-12-24 17:31:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:31:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 164 transitions. [2023-12-24 17:31:56,687 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 164 transitions. Word has length 126 [2023-12-24 17:31:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:31:56,687 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 164 transitions. [2023-12-24 17:31:56,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:31:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 164 transitions. [2023-12-24 17:31:56,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-24 17:31:56,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:31:56,689 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:31:56,704 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 [2023-12-24 17:31:56,896 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 [2023-12-24 17:31:56,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:31:56,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:31:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1326947827, now seen corresponding path program 1 times [2023-12-24 17:31:56,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:31:56,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251080919] [2023-12-24 17:31:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:31:56,898 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 [2023-12-24 17:31:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:31:56,900 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) [2023-12-24 17:31:56,902 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 [2023-12-24 17:31:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:31:57,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:31:57,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:31:57,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:31:57,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 65 [2023-12-24 17:31:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-24 17:31:57,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:31:57,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:31:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251080919] [2023-12-24 17:31:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251080919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:31:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:31:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:31:57,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250769177] [2023-12-24 17:31:57,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:31:57,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:31:57,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:31:57,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:31:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:31:57,560 INFO L87 Difference]: Start difference. First operand 111 states and 164 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:32:01,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:03,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:06,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:09,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:09,383 INFO L93 Difference]: Finished difference Result 227 states and 336 transitions. [2023-12-24 17:32:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:32:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2023-12-24 17:32:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:09,410 INFO L225 Difference]: With dead ends: 227 [2023-12-24 17:32:09,410 INFO L226 Difference]: Without dead ends: 117 [2023-12-24 17:32:09,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:32:09,411 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 128 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:09,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 414 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-24 17:32:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-24 17:32:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2023-12-24 17:32:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:32:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2023-12-24 17:32:09,421 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 128 [2023-12-24 17:32:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:09,421 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2023-12-24 17:32:09,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:32:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2023-12-24 17:32:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-24 17:32:09,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:09,423 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:09,437 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 (5)] Ended with exit code 0 [2023-12-24 17:32:09,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:09,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:09,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 956620141, now seen corresponding path program 1 times [2023-12-24 17:32:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180311295] [2023-12-24 17:32:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:09,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:09,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:09,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:32:09,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 17:32:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:10,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:32:10,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:10,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:10,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 65 [2023-12-24 17:32:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:32:10,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:10,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:10,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180311295] [2023-12-24 17:32:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180311295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:10,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:32:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799227464] [2023-12-24 17:32:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:32:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:32:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:32:10,315 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:32:12,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:14,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:17,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:18,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 17:32:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:18,863 INFO L93 Difference]: Finished difference Result 227 states and 334 transitions. [2023-12-24 17:32:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:32:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2023-12-24 17:32:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:18,888 INFO L225 Difference]: With dead ends: 227 [2023-12-24 17:32:18,889 INFO L226 Difference]: Without dead ends: 117 [2023-12-24 17:32:18,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:32:18,890 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 119 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:18,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 410 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-24 17:32:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-24 17:32:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2023-12-24 17:32:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:32:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2023-12-24 17:32:18,898 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 130 [2023-12-24 17:32:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:18,898 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2023-12-24 17:32:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-24 17:32:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2023-12-24 17:32:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:32:18,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:18,899 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:18,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:19,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:19,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1766272563, now seen corresponding path program 1 times [2023-12-24 17:32:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548499160] [2023-12-24 17:32:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:19,124 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 [2023-12-24 17:32:19,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:19,125 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) [2023-12-24 17:32:19,126 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 [2023-12-24 17:32:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:19,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:32:19,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:19,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 17:32:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:32:19,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:19,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:19,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548499160] [2023-12-24 17:32:19,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548499160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:19,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:19,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:32:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598887783] [2023-12-24 17:32:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:32:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:32:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:32:19,612 INFO L87 Difference]: Start difference. First operand 111 states and 162 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:32:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:19,664 INFO L93 Difference]: Finished difference Result 241 states and 354 transitions. [2023-12-24 17:32:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:32:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2023-12-24 17:32:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:19,666 INFO L225 Difference]: With dead ends: 241 [2023-12-24 17:32:19,666 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 17:32:19,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:32:19,667 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 35 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 295 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:32:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 17:32:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2023-12-24 17:32:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 94 states have internal predecessors, (131), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-24 17:32:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2023-12-24 17:32:19,677 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 132 [2023-12-24 17:32:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:19,678 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2023-12-24 17:32:19,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:32:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2023-12-24 17:32:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:32:19,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:19,679 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:19,695 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 [2023-12-24 17:32:19,890 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 [2023-12-24 17:32:19,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:19,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1827630155, now seen corresponding path program 1 times [2023-12-24 17:32:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:19,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324399112] [2023-12-24 17:32:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:19,892 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 [2023-12-24 17:32:19,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:19,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:32:19,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 17:32:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:20,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:32:20,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:20,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 17:32:20,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:20,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 17:32:20,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:20,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2023-12-24 17:32:21,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:21,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 38 [2023-12-24 17:32:21,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:21,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 48 [2023-12-24 17:32:21,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:21,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 61 [2023-12-24 17:32:25,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:25,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 64 [2023-12-24 17:32:25,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:25,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 64 [2023-12-24 17:32:26,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:26,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 84 [2023-12-24 17:32:34,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:34,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 90 [2023-12-24 17:32:34,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:34,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2023-12-24 17:32:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-24 17:32:34,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:32:34,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:32:34,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324399112] [2023-12-24 17:32:34,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324399112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:32:34,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:32:34,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:32:34,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746316760] [2023-12-24 17:32:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:32:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:32:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:32:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:32:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=39, Unknown=3, NotChecked=0, Total=72 [2023-12-24 17:32:34,729 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-24 17:32:38,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:41,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:43,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:46,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:32:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:32:46,332 INFO L93 Difference]: Finished difference Result 331 states and 481 transitions. [2023-12-24 17:32:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:32:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 132 [2023-12-24 17:32:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:32:46,333 INFO L225 Difference]: With dead ends: 331 [2023-12-24 17:32:46,334 INFO L226 Difference]: Without dead ends: 221 [2023-12-24 17:32:46,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=39, Invalid=48, Unknown=3, NotChecked=0, Total=90 [2023-12-24 17:32:46,335 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 203 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:32:46,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 409 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-12-24 17:32:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-24 17:32:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 217. [2023-12-24 17:32:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 184 states have (on average 1.391304347826087) internal successors, (256), 184 states have internal predecessors, (256), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 17:32:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 316 transitions. [2023-12-24 17:32:46,359 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 316 transitions. Word has length 132 [2023-12-24 17:32:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:32:46,360 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 316 transitions. [2023-12-24 17:32:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-12-24 17:32:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 316 transitions. [2023-12-24 17:32:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:32:46,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:32:46,363 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:32:46,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 17:32:46,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:32:46,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:32:46,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:32:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 778393399, now seen corresponding path program 1 times [2023-12-24 17:32:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:32:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308282613] [2023-12-24 17:32:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:32:46,579 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 [2023-12-24 17:32:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:32:46,580 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) [2023-12-24 17:32:46,582 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 [2023-12-24 17:32:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:32:47,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:32:47,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:32:47,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:32:47,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:32:47,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:32:47,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:32:47,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:32:47,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2023-12-24 17:32:51,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:51,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 61 [2023-12-24 17:32:58,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:32:58,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 87 [2023-12-24 17:33:08,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:33:08,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 113 [2023-12-24 17:33:24,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:33:24,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 119 [2023-12-24 17:33:24,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:33:24,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 118 [2023-12-24 17:33:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 236 proven. 39 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-24 17:33:25,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:33:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:33:41,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:33:41,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308282613] [2023-12-24 17:33:41,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308282613] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:33:41,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:33:41,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-12-24 17:33:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023324] [2023-12-24 17:33:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:33:41,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:33:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:33:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:33:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=143, Unknown=15, NotChecked=0, Total=210 [2023-12-24 17:33:41,769 INFO L87 Difference]: Start difference. First operand 217 states and 316 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:33:43,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:02,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:04,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:34:04,541 INFO L93 Difference]: Finished difference Result 472 states and 688 transitions. [2023-12-24 17:34:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:34:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2023-12-24 17:34:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:34:04,571 INFO L225 Difference]: With dead ends: 472 [2023-12-24 17:34:04,571 INFO L226 Difference]: Without dead ends: 256 [2023-12-24 17:34:04,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.0s TimeCoverageRelationStatistics Valid=58, Invalid=162, Unknown=20, NotChecked=0, Total=240 [2023-12-24 17:34:04,572 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:34:04,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 308 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-24 17:34:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-24 17:34:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 216. [2023-12-24 17:34:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 183 states have (on average 1.3879781420765027) internal successors, (254), 183 states have internal predecessors, (254), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 17:34:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 314 transitions. [2023-12-24 17:34:04,589 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 314 transitions. Word has length 132 [2023-12-24 17:34:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:34:04,590 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 314 transitions. [2023-12-24 17:34:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:34:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 314 transitions. [2023-12-24 17:34:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-24 17:34:04,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:34:04,591 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:34:04,606 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 [2023-12-24 17:34:04,804 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 [2023-12-24 17:34:04,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:34:04,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:34:04,805 INFO L85 PathProgramCache]: Analyzing trace with hash -242674955, now seen corresponding path program 1 times [2023-12-24 17:34:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:34:04,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353369048] [2023-12-24 17:34:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:34:04,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:34:04,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:34:04,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:34:04,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 17:34:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:34:05,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:34:05,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:34:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:34:05,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:34:05,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:34:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353369048] [2023-12-24 17:34:05,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353369048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:34:05,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:34:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:34:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287784882] [2023-12-24 17:34:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:34:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:34:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:34:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:34:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:34:05,270 INFO L87 Difference]: Start difference. First operand 216 states and 314 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:34:07,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:10,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:11,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:34:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:34:11,517 INFO L93 Difference]: Finished difference Result 453 states and 659 transitions. [2023-12-24 17:34:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:34:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2023-12-24 17:34:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:34:11,519 INFO L225 Difference]: With dead ends: 453 [2023-12-24 17:34:11,519 INFO L226 Difference]: Without dead ends: 238 [2023-12-24 17:34:11,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:34:11,521 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 79 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:34:11,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 414 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-24 17:34:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-24 17:34:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 212. [2023-12-24 17:34:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 179 states have (on average 1.3798882681564246) internal successors, (247), 179 states have internal predecessors, (247), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 17:34:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 307 transitions. [2023-12-24 17:34:11,535 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 307 transitions. Word has length 132 [2023-12-24 17:34:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:34:11,536 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 307 transitions. [2023-12-24 17:34:11,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:34:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 307 transitions. [2023-12-24 17:34:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:34:11,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:34:11,537 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:34:11,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 17:34:11,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:34:11,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:34:11,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:34:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1873148021, now seen corresponding path program 1 times [2023-12-24 17:34:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:34:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312231833] [2023-12-24 17:34:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:34:11,754 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 [2023-12-24 17:34:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:34:11,754 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) [2023-12-24 17:34:11,756 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 [2023-12-24 17:34:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:34:12,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:34:12,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:34:12,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 17:34:12,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:12,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2023-12-24 17:34:12,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:12,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 48 [2023-12-24 17:34:12,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:12,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2023-12-24 17:34:13,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:13,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 74 [2023-12-24 17:34:13,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:13,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 87 [2023-12-24 17:34:16,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:16,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 110 [2023-12-24 17:34:25,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:25,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 114 treesize of output 126 [2023-12-24 17:34:37,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:37,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 119 treesize of output 149 [2023-12-24 17:34:54,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:54,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 138 treesize of output 155 [2023-12-24 17:34:54,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:54,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 138 treesize of output 155 [2023-12-24 17:34:54,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:34:54,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 144 treesize of output 66 [2023-12-24 17:34:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-24 17:34:54,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:34:54,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:34:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312231833] [2023-12-24 17:34:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312231833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:34:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:34:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:34:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267247324] [2023-12-24 17:34:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:34:54,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:34:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:34:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:34:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=78, Unknown=10, NotChecked=0, Total=156 [2023-12-24 17:34:54,704 INFO L87 Difference]: Start difference. First operand 212 states and 307 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-24 17:34:56,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:34:59,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:35:02,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:35:04,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:35:07,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:35:09,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:35:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:35:09,968 INFO L93 Difference]: Finished difference Result 463 states and 671 transitions. [2023-12-24 17:35:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:35:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 133 [2023-12-24 17:35:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:35:09,970 INFO L225 Difference]: With dead ends: 463 [2023-12-24 17:35:09,970 INFO L226 Difference]: Without dead ends: 252 [2023-12-24 17:35:09,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=81, Invalid=91, Unknown=10, NotChecked=0, Total=182 [2023-12-24 17:35:09,971 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 159 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:35:09,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 570 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-24 17:35:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-24 17:35:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 212. [2023-12-24 17:35:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 179 states have (on average 1.3743016759776536) internal successors, (246), 179 states have internal predecessors, (246), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-24 17:35:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 306 transitions. [2023-12-24 17:35:09,990 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 306 transitions. Word has length 133 [2023-12-24 17:35:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:35:09,991 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 306 transitions. [2023-12-24 17:35:09,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-12-24 17:35:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 306 transitions. [2023-12-24 17:35:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:35:09,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:35:09,992 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:35:10,009 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 [2023-12-24 17:35:10,209 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 [2023-12-24 17:35:10,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:35:10,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:35:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1480121011, now seen corresponding path program 1 times [2023-12-24 17:35:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:35:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772857683] [2023-12-24 17:35:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:35:10,210 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 [2023-12-24 17:35:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:35:10,211 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:35:10,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 17:35:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:35:10,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:35:10,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:35:10,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:35:10,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 17:35:11,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 17:35:11,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 17:35:11,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2023-12-24 17:35:14,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:14,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 47 [2023-12-24 17:35:22,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:22,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 73 [2023-12-24 17:35:34,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:34,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 89 [2023-12-24 17:35:51,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:51,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 102 [2023-12-24 17:35:51,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:51,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 105 [2023-12-24 17:35:51,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:35:51,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 58 [2023-12-24 17:35:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 320 proven. 30 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-24 17:35:51,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:35:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:35:53,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:35:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772857683] [2023-12-24 17:35:53,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772857683] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:35:53,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:35:53,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 14 [2023-12-24 17:35:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588599228] [2023-12-24 17:35:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:35:53,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:35:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:35:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:35:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=122, Unknown=10, NotChecked=0, Total=182 [2023-12-24 17:35:53,042 INFO L87 Difference]: Start difference. First operand 212 states and 306 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:35:59,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:01,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:04,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:04,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:36:04,902 INFO L93 Difference]: Finished difference Result 593 states and 853 transitions. [2023-12-24 17:36:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:36:04,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2023-12-24 17:36:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:36:04,908 INFO L225 Difference]: With dead ends: 593 [2023-12-24 17:36:04,908 INFO L226 Difference]: Without dead ends: 382 [2023-12-24 17:36:04,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=54, Invalid=146, Unknown=10, NotChecked=0, Total=210 [2023-12-24 17:36:04,910 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 139 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:36:04,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 339 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-24 17:36:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-24 17:36:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 324. [2023-12-24 17:36:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 285 states have (on average 1.3824561403508773) internal successors, (394), 287 states have internal predecessors, (394), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 17:36:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 462 transitions. [2023-12-24 17:36:04,936 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 462 transitions. Word has length 133 [2023-12-24 17:36:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:36:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 462 transitions. [2023-12-24 17:36:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:36:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 462 transitions. [2023-12-24 17:36:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:36:04,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:36:04,938 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:36:04,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 17:36:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:36:05,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:36:05,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:36:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2134787915, now seen corresponding path program 1 times [2023-12-24 17:36:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:36:05,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431447604] [2023-12-24 17:36:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:36:05,152 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 [2023-12-24 17:36:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:36:05,154 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) [2023-12-24 17:36:05,155 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 [2023-12-24 17:36:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:36:05,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 17:36:05,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:36:05,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:36:05,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 17:36:06,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 17:36:06,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:06,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 17:36:06,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:06,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 53 [2023-12-24 17:36:10,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:10,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 53 [2023-12-24 17:36:10,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:10,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 53 [2023-12-24 17:36:11,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:11,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 73 [2023-12-24 17:36:18,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:18,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 89 [2023-12-24 17:36:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 340 proven. 30 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-24 17:36:19,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:36:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:36:20,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:36:20,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431447604] [2023-12-24 17:36:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431447604] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:36:20,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:36:20,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-24 17:36:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032991470] [2023-12-24 17:36:20,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:36:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:36:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:36:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:36:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=154, Unknown=3, NotChecked=0, Total=210 [2023-12-24 17:36:20,125 INFO L87 Difference]: Start difference. First operand 324 states and 462 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:36:23,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:29,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:31,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:33,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:35,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:36:35,759 INFO L93 Difference]: Finished difference Result 909 states and 1296 transitions. [2023-12-24 17:36:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:36:35,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2023-12-24 17:36:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:36:35,773 INFO L225 Difference]: With dead ends: 909 [2023-12-24 17:36:35,773 INFO L226 Difference]: Without dead ends: 571 [2023-12-24 17:36:35,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=58, Invalid=179, Unknown=3, NotChecked=0, Total=240 [2023-12-24 17:36:35,775 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 132 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:36:35,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 511 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-12-24 17:36:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-24 17:36:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 393. [2023-12-24 17:36:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 354 states have (on average 1.3728813559322033) internal successors, (486), 356 states have internal predecessors, (486), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 17:36:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 554 transitions. [2023-12-24 17:36:35,804 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 554 transitions. Word has length 133 [2023-12-24 17:36:35,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:36:35,805 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 554 transitions. [2023-12-24 17:36:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:36:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 554 transitions. [2023-12-24 17:36:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:36:35,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:36:35,806 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:36:35,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 17:36:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:36:36,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:36:36,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:36:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 471235639, now seen corresponding path program 1 times [2023-12-24 17:36:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:36:36,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580251512] [2023-12-24 17:36:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:36:36,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:36:36,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:36:36,022 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:36:36,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 17:36:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:36:36,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:36:36,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:36:36,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:36:36,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 17:36:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:36:36,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:36:36,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:36:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580251512] [2023-12-24 17:36:36,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580251512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:36:36,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:36:36,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:36:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149664285] [2023-12-24 17:36:36,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:36:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:36:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:36:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:36:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:36:36,502 INFO L87 Difference]: Start difference. First operand 393 states and 554 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:36:39,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:41,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:43,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:46,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:48,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:36:48,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:36:48,437 INFO L93 Difference]: Finished difference Result 1115 states and 1583 transitions. [2023-12-24 17:36:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:36:48,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2023-12-24 17:36:48,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:36:48,441 INFO L225 Difference]: With dead ends: 1115 [2023-12-24 17:36:48,441 INFO L226 Difference]: Without dead ends: 723 [2023-12-24 17:36:48,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:36:48,442 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 225 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:36:48,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 873 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-24 17:36:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-12-24 17:36:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 532. [2023-12-24 17:36:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 476 states have (on average 1.3571428571428572) internal successors, (646), 479 states have internal predecessors, (646), 49 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-24 17:36:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 744 transitions. [2023-12-24 17:36:48,486 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 744 transitions. Word has length 133 [2023-12-24 17:36:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:36:48,486 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 744 transitions. [2023-12-24 17:36:48,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:36:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 744 transitions. [2023-12-24 17:36:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-24 17:36:48,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:36:48,488 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:36:48,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 17:36:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:36:48,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:36:48,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:36:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1346107505, now seen corresponding path program 1 times [2023-12-24 17:36:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:36:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524154379] [2023-12-24 17:36:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:36:48,705 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 [2023-12-24 17:36:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:36:48,707 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) [2023-12-24 17:36:48,707 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 [2023-12-24 17:36:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:36:49,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 17:36:49,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:36:49,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 17:36:49,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:49,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:36:49,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:49,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-12-24 17:36:50,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:50,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 55 [2023-12-24 17:36:50,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:50,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 55 [2023-12-24 17:36:50,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:50,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 55 [2023-12-24 17:36:50,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:50,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 75 [2023-12-24 17:36:55,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:36:55,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 101 [2023-12-24 17:37:03,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:03,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 127 [2023-12-24 17:37:16,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:16,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 152 treesize of output 68 [2023-12-24 17:37:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 278 proven. 30 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 17:37:16,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:37:20,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:37:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524154379] [2023-12-24 17:37:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524154379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:37:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1593170321] [2023-12-24 17:37:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:37:20,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:37:20,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:37:20,557 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:37:20,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 17:37:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:37:22,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:37:22,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:37:22,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 17:37:22,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 17:37:22,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:22,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 17:37:22,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:22,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 17:37:22,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:22,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 17:37:23,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:23,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 50 [2023-12-24 17:37:26,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:26,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 64 [2023-12-24 17:37:34,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:34,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 75 [2023-12-24 17:37:46,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:37:46,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 73 treesize of output 94 [2023-12-24 17:38:03,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:38:03,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 100 [2023-12-24 17:38:03,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:38:03,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 104 treesize of output 60 [2023-12-24 17:38:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 17:38:03,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:38:03,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1593170321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:38:03,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:38:03,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-12-24 17:38:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648390198] [2023-12-24 17:38:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:38:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:38:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:38:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:38:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=437, Unknown=16, NotChecked=0, Total=650 [2023-12-24 17:38:03,885 INFO L87 Difference]: Start difference. First operand 532 states and 744 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:38:07,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:38:09,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:11,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:13,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:38:15,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:38:16,023 INFO L93 Difference]: Finished difference Result 1502 states and 2113 transitions. [2023-12-24 17:38:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:38:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 133 [2023-12-24 17:38:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:38:16,028 INFO L225 Difference]: With dead ends: 1502 [2023-12-24 17:38:16,028 INFO L226 Difference]: Without dead ends: 956 [2023-12-24 17:38:16,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 65.6s TimeCoverageRelationStatistics Valid=213, Invalid=473, Unknown=16, NotChecked=0, Total=702 [2023-12-24 17:38:16,030 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 421 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:38:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 390 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-24 17:38:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-24 17:38:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 885. [2023-12-24 17:38:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 777 states have (on average 1.35006435006435) internal successors, (1049), 782 states have internal predecessors, (1049), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 17:38:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1241 transitions. [2023-12-24 17:38:16,136 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1241 transitions. Word has length 133 [2023-12-24 17:38:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:38:16,136 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1241 transitions. [2023-12-24 17:38:16,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:38:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1241 transitions. [2023-12-24 17:38:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:38:16,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:38:16,138 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:38:16,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 17:38:16,367 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 [2023-12-24 17:38:16,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 17:38:16,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:38:16,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:38:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash 65985584, now seen corresponding path program 1 times [2023-12-24 17:38:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:38:16,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359451932] [2023-12-24 17:38:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:38:16,555 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 [2023-12-24 17:38:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:38:16,556 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) [2023-12-24 17:38:16,558 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 (17)] Waiting until timeout for monitored process [2023-12-24 17:38:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:38:16,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:38:16,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:38:16,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:38:16,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-24 17:38:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:38:16,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:38:16,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:38:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359451932] [2023-12-24 17:38:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359451932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:38:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:38:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:38:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510464611] [2023-12-24 17:38:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:38:16,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:38:16,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:38:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:38:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:38:16,967 INFO L87 Difference]: Start difference. First operand 885 states and 1241 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:38:20,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:22,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:38:23,011 INFO L93 Difference]: Finished difference Result 1180 states and 1652 transitions. [2023-12-24 17:38:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 17:38:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 17:38:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:38:23,045 INFO L225 Difference]: With dead ends: 1180 [2023-12-24 17:38:23,045 INFO L226 Difference]: Without dead ends: 887 [2023-12-24 17:38:23,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:38:23,046 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 134 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:38:23,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 409 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-24 17:38:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-12-24 17:38:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2023-12-24 17:38:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 777 states have (on average 1.3474903474903475) internal successors, (1047), 782 states have internal predecessors, (1047), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-24 17:38:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1239 transitions. [2023-12-24 17:38:23,134 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1239 transitions. Word has length 134 [2023-12-24 17:38:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:38:23,134 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1239 transitions. [2023-12-24 17:38:23,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:38:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1239 transitions. [2023-12-24 17:38:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:38:23,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:38:23,135 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:38:23,151 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 [2023-12-24 17:38:23,350 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 [2023-12-24 17:38:23,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:38:23,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:38:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash 284840302, now seen corresponding path program 1 times [2023-12-24 17:38:23,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:38:23,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875012525] [2023-12-24 17:38:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:38:23,352 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 [2023-12-24 17:38:23,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:38:23,353 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) [2023-12-24 17:38:23,353 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 [2023-12-24 17:38:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:38:23,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:38:23,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:38:23,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:38:23,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-12-24 17:38:23,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:38:23,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2023-12-24 17:38:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:38:23,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:38:23,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:38:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875012525] [2023-12-24 17:38:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875012525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:38:23,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:38:23,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:38:23,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157735276] [2023-12-24 17:38:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:38:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:38:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:38:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:38:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:38:23,856 INFO L87 Difference]: Start difference. First operand 885 states and 1239 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:38:25,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:30,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:33,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:36,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:38:36,217 INFO L93 Difference]: Finished difference Result 1407 states and 1969 transitions. [2023-12-24 17:38:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:38:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 17:38:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:38:36,221 INFO L225 Difference]: With dead ends: 1407 [2023-12-24 17:38:36,221 INFO L226 Difference]: Without dead ends: 876 [2023-12-24 17:38:36,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:38:36,222 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 323 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:38:36,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 554 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-24 17:38:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-12-24 17:38:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 868. [2023-12-24 17:38:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 758 states have (on average 1.3390501319261214) internal successors, (1015), 763 states have internal predecessors, (1015), 98 states have call successors, (98), 11 states have call predecessors, (98), 11 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 17:38:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1211 transitions. [2023-12-24 17:38:36,304 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1211 transitions. Word has length 134 [2023-12-24 17:38:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:38:36,304 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1211 transitions. [2023-12-24 17:38:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:38:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1211 transitions. [2023-12-24 17:38:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:38:36,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:38:36,305 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:38:36,322 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 [2023-12-24 17:38:36,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-24 17:38:36,519 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:38:36,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:38:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash 896719150, now seen corresponding path program 1 times [2023-12-24 17:38:36,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:38:36,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356387619] [2023-12-24 17:38:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:38:36,520 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 [2023-12-24 17:38:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:38:36,521 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-24 17:38:36,522 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 (19)] Waiting until timeout for monitored process [2023-12-24 17:38:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:38:37,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 17:38:37,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:38:37,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:38:37,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-12-24 17:38:37,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:38:37,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2023-12-24 17:38:37,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:38:37,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 17:38:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:38:37,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:38:37,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:38:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356387619] [2023-12-24 17:38:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356387619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:38:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:38:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:38:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156981159] [2023-12-24 17:38:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:38:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:38:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:38:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:38:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:38:37,306 INFO L87 Difference]: Start difference. First operand 868 states and 1211 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:38:39,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:45,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:47,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:49,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:51,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:53,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:55,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:38:58,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:39:00,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:39:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:39:00,875 INFO L93 Difference]: Finished difference Result 1157 states and 1606 transitions. [2023-12-24 17:39:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:39:00,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 17:39:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:39:00,879 INFO L225 Difference]: With dead ends: 1157 [2023-12-24 17:39:00,879 INFO L226 Difference]: Without dead ends: 970 [2023-12-24 17:39:00,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:39:00,880 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 395 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:39:00,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1114 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 869 Invalid, 1 Unknown, 0 Unchecked, 23.3s Time] [2023-12-24 17:39:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-12-24 17:39:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 864. [2023-12-24 17:39:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 754 states have (on average 1.3381962864721486) internal successors, (1009), 759 states have internal predecessors, (1009), 98 states have call successors, (98), 11 states have call predecessors, (98), 11 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 17:39:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1205 transitions. [2023-12-24 17:39:00,964 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1205 transitions. Word has length 134 [2023-12-24 17:39:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:39:00,964 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1205 transitions. [2023-12-24 17:39:00,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:39:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1205 transitions. [2023-12-24 17:39:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:39:00,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:39:00,966 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:39:00,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 17:39:01,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-24 17:39:01,182 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:39:01,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:39:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash 206534194, now seen corresponding path program 1 times [2023-12-24 17:39:01,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:39:01,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309017503] [2023-12-24 17:39:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:39:01,183 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 [2023-12-24 17:39:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:39:01,184 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:39:01,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-24 17:39:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:39:01,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:39:01,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:39:01,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 17:39:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:39:01,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:39:01,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:39:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309017503] [2023-12-24 17:39:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309017503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:39:01,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:39:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:39:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428792430] [2023-12-24 17:39:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:39:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:39:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:39:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:39:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:39:01,572 INFO L87 Difference]: Start difference. First operand 864 states and 1205 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:39:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:39:01,667 INFO L93 Difference]: Finished difference Result 1427 states and 1989 transitions. [2023-12-24 17:39:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:39:01,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-12-24 17:39:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:39:01,670 INFO L225 Difference]: With dead ends: 1427 [2023-12-24 17:39:01,670 INFO L226 Difference]: Without dead ends: 864 [2023-12-24 17:39:01,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:39:01,672 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:39:01,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 287 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:39:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-24 17:39:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2023-12-24 17:39:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 754 states have (on average 1.336870026525199) internal successors, (1008), 759 states have internal predecessors, (1008), 98 states have call successors, (98), 11 states have call predecessors, (98), 11 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 17:39:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1204 transitions. [2023-12-24 17:39:01,758 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1204 transitions. Word has length 134 [2023-12-24 17:39:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:39:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1204 transitions. [2023-12-24 17:39:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:39:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1204 transitions. [2023-12-24 17:39:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-24 17:39:01,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:39:01,761 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:39:01,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-24 17:39:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:39:01,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:39:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:39:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash 425388912, now seen corresponding path program 1 times [2023-12-24 17:39:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:39:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404994585] [2023-12-24 17:39:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:39:01,978 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 [2023-12-24 17:39:01,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:39:01,979 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-24 17:39:02,017 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 (21)] Waiting until timeout for monitored process [2023-12-24 17:39:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:39:02,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:39:02,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:39:02,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 17:39:02,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:02,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 17:39:02,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:02,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 17:39:02,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:02,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 17:39:03,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:03,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 17:39:03,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:03,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2023-12-24 17:39:07,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:07,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 76 [2023-12-24 17:39:15,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:15,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 99 [2023-12-24 17:39:28,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:28,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 125 [2023-12-24 17:39:45,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 122 treesize of output 142 [2023-12-24 17:39:45,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:45,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 146 [2023-12-24 17:39:46,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:39:46,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 132 treesize of output 58 [2023-12-24 17:39:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 17:39:46,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:39:46,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:39:46,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404994585] [2023-12-24 17:39:46,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404994585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:39:46,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:39:46,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 17:39:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031094471] [2023-12-24 17:39:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:39:46,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 17:39:46,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:39:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 17:39:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=148, Unknown=10, NotChecked=0, Total=240 [2023-12-24 17:39:46,404 INFO L87 Difference]: Start difference. First operand 864 states and 1204 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:39:49,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:39:55,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:39:58,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:40:03,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:40:07,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:40:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:40:08,505 INFO L93 Difference]: Finished difference Result 1531 states and 2130 transitions. [2023-12-24 17:40:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:40:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 134 [2023-12-24 17:40:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:40:08,508 INFO L225 Difference]: With dead ends: 1531 [2023-12-24 17:40:08,508 INFO L226 Difference]: Without dead ends: 968 [2023-12-24 17:40:08,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=205, Invalid=385, Unknown=10, NotChecked=0, Total=600 [2023-12-24 17:40:08,509 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 430 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:40:08,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1435 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-24 17:40:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-12-24 17:40:08,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 858. [2023-12-24 17:40:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 748 states have (on average 1.335561497326203) internal successors, (999), 753 states have internal predecessors, (999), 98 states have call successors, (98), 11 states have call predecessors, (98), 11 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 17:40:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1195 transitions. [2023-12-24 17:40:08,605 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1195 transitions. Word has length 134 [2023-12-24 17:40:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:40:08,605 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1195 transitions. [2023-12-24 17:40:08,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:40:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1195 transitions. [2023-12-24 17:40:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-24 17:40:08,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:40:08,606 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:40:08,622 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 (21)] Forceful destruction successful, exit code 0 [2023-12-24 17:40:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-24 17:40:08,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:40:08,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:40:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1246279006, now seen corresponding path program 1 times [2023-12-24 17:40:08,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:40:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012800571] [2023-12-24 17:40:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:40:08,822 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 [2023-12-24 17:40:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:40:08,823 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:40:08,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 17:40:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:40:09,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 17:40:09,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:40:09,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:40:09,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:40:09,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:40:09,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:40:09,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 17:40:09,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:09,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 48 [2023-12-24 17:40:13,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:13,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 64 [2023-12-24 17:40:22,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:22,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 67 [2023-12-24 17:40:22,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:22,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 87 [2023-12-24 17:40:34,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:34,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 93 [2023-12-24 17:40:35,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:35,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 98 treesize of output 98 [2023-12-24 17:40:35,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:35,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 102 treesize of output 98 [2023-12-24 17:40:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 288 proven. 39 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-24 17:40:35,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:40:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:40:35,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:40:35,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012800571] [2023-12-24 17:40:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012800571] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:40:35,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:40:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-12-24 17:40:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721054623] [2023-12-24 17:40:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:40:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:40:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:40:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:40:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=153, Unknown=6, NotChecked=0, Total=210 [2023-12-24 17:40:35,488 INFO L87 Difference]: Start difference. First operand 858 states and 1195 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:40:37,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:39,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:40:40,085 INFO L93 Difference]: Finished difference Result 1751 states and 2434 transitions. [2023-12-24 17:40:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:40:40,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 135 [2023-12-24 17:40:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:40:40,088 INFO L225 Difference]: With dead ends: 1751 [2023-12-24 17:40:40,088 INFO L226 Difference]: Without dead ends: 952 [2023-12-24 17:40:40,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=56, Invalid=178, Unknown=6, NotChecked=0, Total=240 [2023-12-24 17:40:40,090 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 99 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:40:40,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 355 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 17:40:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-24 17:40:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 834. [2023-12-24 17:40:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 724 states have (on average 1.3066298342541436) internal successors, (946), 729 states have internal predecessors, (946), 98 states have call successors, (98), 11 states have call predecessors, (98), 11 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-24 17:40:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1142 transitions. [2023-12-24 17:40:40,185 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1142 transitions. Word has length 135 [2023-12-24 17:40:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:40:40,185 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1142 transitions. [2023-12-24 17:40:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:40:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1142 transitions. [2023-12-24 17:40:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 17:40:40,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:40:40,186 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:40:40,202 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 (22)] Ended with exit code 0 [2023-12-24 17:40:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:40:40,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:40:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:40:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1660067819, now seen corresponding path program 1 times [2023-12-24 17:40:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:40:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809771899] [2023-12-24 17:40:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:40:40,402 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 [2023-12-24 17:40:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:40:40,403 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:40:40,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-24 17:40:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:40:40,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:40:40,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:40:40,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:40:41,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-12-24 17:40:41,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:41,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:40:41,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:41,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2023-12-24 17:40:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:40:41,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:40:41,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:40:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809771899] [2023-12-24 17:40:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809771899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:40:41,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:40:41,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:40:41,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198243055] [2023-12-24 17:40:41,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:40:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:40:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:40:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:40:41,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:40:41,201 INFO L87 Difference]: Start difference. First operand 834 states and 1142 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:40:42,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:46,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:48,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:51,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:55,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:58,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:40:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:40:58,760 INFO L93 Difference]: Finished difference Result 1379 states and 1888 transitions. [2023-12-24 17:40:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:40:58,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2023-12-24 17:40:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:40:58,795 INFO L225 Difference]: With dead ends: 1379 [2023-12-24 17:40:58,795 INFO L226 Difference]: Without dead ends: 885 [2023-12-24 17:40:58,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:40:58,796 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 308 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:40:58,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 755 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2023-12-24 17:40:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-24 17:40:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 684. [2023-12-24 17:40:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 593 states have (on average 1.2984822934232716) internal successors, (770), 597 states have internal predecessors, (770), 81 states have call successors, (81), 9 states have call predecessors, (81), 9 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-24 17:40:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 932 transitions. [2023-12-24 17:40:58,900 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 932 transitions. Word has length 137 [2023-12-24 17:40:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:40:58,900 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 932 transitions. [2023-12-24 17:40:58,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:40:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 932 transitions. [2023-12-24 17:40:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 17:40:58,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:40:58,901 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:40:58,914 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 (23)] Forceful destruction successful, exit code 0 [2023-12-24 17:40:59,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:40:59,105 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:40:59,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:40:59,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1483869843, now seen corresponding path program 1 times [2023-12-24 17:40:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:40:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130066772] [2023-12-24 17:40:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:40:59,106 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 [2023-12-24 17:40:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:40:59,107 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:40:59,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 17:40:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:40:59,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:40:59,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:40:59,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:40:59,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 17:40:59,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:40:59,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:41:00,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:00,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 47 [2023-12-24 17:41:04,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:04,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 73 [2023-12-24 17:41:12,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:12,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 99 [2023-12-24 17:41:24,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:24,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 125 [2023-12-24 17:41:41,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:41,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 116 treesize of output 131 [2023-12-24 17:41:42,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:42,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 122 treesize of output 142 [2023-12-24 17:41:42,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:42,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 71 [2023-12-24 17:41:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 17:41:42,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:41:42,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:41:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130066772] [2023-12-24 17:41:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130066772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:41:42,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:41:42,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:41:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598425540] [2023-12-24 17:41:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:41:42,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:41:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:41:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:41:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=80, Unknown=10, NotChecked=0, Total=132 [2023-12-24 17:41:42,905 INFO L87 Difference]: Start difference. First operand 684 states and 932 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:41:46,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:41:51,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:41:54,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:41:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:41:54,628 INFO L93 Difference]: Finished difference Result 1372 states and 1872 transitions. [2023-12-24 17:41:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:41:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 137 [2023-12-24 17:41:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:41:54,634 INFO L225 Difference]: With dead ends: 1372 [2023-12-24 17:41:54,634 INFO L226 Difference]: Without dead ends: 841 [2023-12-24 17:41:54,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=112, Invalid=184, Unknown=10, NotChecked=0, Total=306 [2023-12-24 17:41:54,635 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 533 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:41:54,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 466 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-24 17:41:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-24 17:41:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 792. [2023-12-24 17:41:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 686 states have (on average 1.3002915451895043) internal successors, (892), 693 states have internal predecessors, (892), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 17:41:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1078 transitions. [2023-12-24 17:41:54,778 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1078 transitions. Word has length 137 [2023-12-24 17:41:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:41:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1078 transitions. [2023-12-24 17:41:54,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:41:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1078 transitions. [2023-12-24 17:41:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 17:41:54,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:41:54,779 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:41:54,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 17:41:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-24 17:41:54,992 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:41:54,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:41:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1770901203, now seen corresponding path program 1 times [2023-12-24 17:41:54,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:41:54,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774837051] [2023-12-24 17:41:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:41:54,995 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 [2023-12-24 17:41:54,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:41:54,996 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-24 17:41:55,018 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 (25)] Waiting until timeout for monitored process [2023-12-24 17:41:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:41:55,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:41:55,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:41:55,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:41:55,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:41:55,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 17:41:55,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:55,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 17:41:56,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:56,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 17:41:56,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:56,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 40 [2023-12-24 17:41:56,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:41:56,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 50 [2023-12-24 17:42:00,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:00,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 53 [2023-12-24 17:42:00,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:00,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 53 [2023-12-24 17:42:01,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:01,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2023-12-24 17:42:01,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:01,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 67 [2023-12-24 17:42:01,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:01,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 41 [2023-12-24 17:42:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-24 17:42:01,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:42:01,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:42:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774837051] [2023-12-24 17:42:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774837051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:42:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:42:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:42:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143549968] [2023-12-24 17:42:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:42:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:42:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:42:01,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:42:01,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=42, Unknown=1, NotChecked=0, Total=72 [2023-12-24 17:42:01,507 INFO L87 Difference]: Start difference. First operand 792 states and 1078 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 17:42:04,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:07,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:09,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:12,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:42:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:42:12,952 INFO L93 Difference]: Finished difference Result 1489 states and 2029 transitions. [2023-12-24 17:42:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:42:12,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2023-12-24 17:42:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:42:12,984 INFO L225 Difference]: With dead ends: 1489 [2023-12-24 17:42:12,984 INFO L226 Difference]: Without dead ends: 850 [2023-12-24 17:42:12,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=45, Invalid=64, Unknown=1, NotChecked=0, Total=110 [2023-12-24 17:42:12,985 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 409 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:42:12,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 604 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-24 17:42:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-12-24 17:42:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 784. [2023-12-24 17:42:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 678 states have (on average 1.2994100294985251) internal successors, (881), 685 states have internal predecessors, (881), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 17:42:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1067 transitions. [2023-12-24 17:42:13,131 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1067 transitions. Word has length 137 [2023-12-24 17:42:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:42:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1067 transitions. [2023-12-24 17:42:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-24 17:42:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1067 transitions. [2023-12-24 17:42:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 17:42:13,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:42:13,133 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:42:13,149 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 (25)] Forceful destruction successful, exit code 0 [2023-12-24 17:42:13,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-24 17:42:13,348 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:42:13,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:42:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1906571669, now seen corresponding path program 1 times [2023-12-24 17:42:13,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:42:13,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797887523] [2023-12-24 17:42:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:42:13,349 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 [2023-12-24 17:42:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:42:13,350 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-24 17:42:13,351 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 (26)] Waiting until timeout for monitored process [2023-12-24 17:42:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:42:13,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 17:42:13,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:42:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:42:13,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:42:13,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:42:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797887523] [2023-12-24 17:42:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797887523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:42:13,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:42:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:42:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697960892] [2023-12-24 17:42:13,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:42:13,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:42:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:42:13,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:42:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:42:13,751 INFO L87 Difference]: Start difference. First operand 784 states and 1067 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:42:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:42:13,896 INFO L93 Difference]: Finished difference Result 1415 states and 1920 transitions. [2023-12-24 17:42:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:42:13,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2023-12-24 17:42:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:42:13,898 INFO L225 Difference]: With dead ends: 1415 [2023-12-24 17:42:13,898 INFO L226 Difference]: Without dead ends: 784 [2023-12-24 17:42:13,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:42:13,899 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:42:13,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:42:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-24 17:42:14,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2023-12-24 17:42:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 678 states have (on average 1.2935103244837758) internal successors, (877), 685 states have internal predecessors, (877), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (93), 86 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 17:42:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1063 transitions. [2023-12-24 17:42:14,010 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1063 transitions. Word has length 137 [2023-12-24 17:42:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:42:14,011 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1063 transitions. [2023-12-24 17:42:14,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:42:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1063 transitions. [2023-12-24 17:42:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-24 17:42:14,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:42:14,012 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:42:14,029 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 (26)] Forceful destruction successful, exit code 0 [2023-12-24 17:42:14,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-24 17:42:14,229 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:42:14,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:42:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2125426387, now seen corresponding path program 1 times [2023-12-24 17:42:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:42:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768179282] [2023-12-24 17:42:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:42:14,230 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 [2023-12-24 17:42:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:42:14,231 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-24 17:42:14,232 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 (27)] Waiting until timeout for monitored process [2023-12-24 17:42:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:42:14,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 17:42:14,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:42:14,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 17:42:14,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:14,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:42:15,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:15,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 17:42:15,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 17:42:15,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:15,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-12-24 17:42:15,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:15,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 76 [2023-12-24 17:42:20,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:20,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 89 [2023-12-24 17:42:28,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:28,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 92 [2023-12-24 17:42:28,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:28,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 112 [2023-12-24 17:42:41,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:41,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 112 treesize of output 129 [2023-12-24 17:42:41,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:42:41,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 128 treesize of output 62 [2023-12-24 17:42:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-24 17:42:41,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:42:41,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:42:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768179282] [2023-12-24 17:42:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768179282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:42:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:42:41,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:42:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124832130] [2023-12-24 17:42:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:42:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:42:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:42:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:42:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=83, Unknown=6, NotChecked=0, Total=156 [2023-12-24 17:42:41,871 INFO L87 Difference]: Start difference. First operand 784 states and 1063 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:42:45,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:48,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:42:50,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:52,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:42:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:42:52,621 INFO L93 Difference]: Finished difference Result 1317 states and 1777 transitions. [2023-12-24 17:42:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:42:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 137 [2023-12-24 17:42:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:42:52,624 INFO L225 Difference]: With dead ends: 1317 [2023-12-24 17:42:52,624 INFO L226 Difference]: Without dead ends: 686 [2023-12-24 17:42:52,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=91, Invalid=113, Unknown=6, NotChecked=0, Total=210 [2023-12-24 17:42:52,625 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 453 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:42:52,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 640 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-24 17:42:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-24 17:42:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 680. [2023-12-24 17:42:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 582 states have (on average 1.288659793814433) internal successors, (750), 587 states have internal predecessors, (750), 86 states have call successors, (86), 11 states have call predecessors, (86), 11 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:42:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 922 transitions. [2023-12-24 17:42:52,721 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 922 transitions. Word has length 137 [2023-12-24 17:42:52,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:42:52,721 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 922 transitions. [2023-12-24 17:42:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-24 17:42:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 922 transitions. [2023-12-24 17:42:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 17:42:52,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:42:52,722 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:42:52,735 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 (27)] Forceful destruction successful, exit code 0 [2023-12-24 17:42:52,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-24 17:42:52,928 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:42:52,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:42:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2076605694, now seen corresponding path program 1 times [2023-12-24 17:42:52,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:42:52,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020899826] [2023-12-24 17:42:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:42:52,929 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 [2023-12-24 17:42:52,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:42:52,930 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-24 17:42:52,931 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 (28)] Waiting until timeout for monitored process [2023-12-24 17:42:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:42:53,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:42:53,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:42:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:42:53,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:42:53,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:42:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020899826] [2023-12-24 17:42:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020899826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:42:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:42:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:42:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244351381] [2023-12-24 17:42:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:42:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:42:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:42:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:42:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:42:53,432 INFO L87 Difference]: Start difference. First operand 680 states and 922 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:42:55,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:42:57,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:42:59,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:00,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:02,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:43:02,790 INFO L93 Difference]: Finished difference Result 1455 states and 1975 transitions. [2023-12-24 17:43:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:43:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2023-12-24 17:43:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:43:02,793 INFO L225 Difference]: With dead ends: 1455 [2023-12-24 17:43:02,793 INFO L226 Difference]: Without dead ends: 834 [2023-12-24 17:43:02,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:43:02,794 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 58 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:43:02,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 417 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-24 17:43:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-24 17:43:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 704. [2023-12-24 17:43:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 606 states have (on average 1.268976897689769) internal successors, (769), 611 states have internal predecessors, (769), 86 states have call successors, (86), 11 states have call predecessors, (86), 11 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:43:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 941 transitions. [2023-12-24 17:43:02,902 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 941 transitions. Word has length 138 [2023-12-24 17:43:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:43:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 941 transitions. [2023-12-24 17:43:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 941 transitions. [2023-12-24 17:43:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 17:43:02,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:43:02,903 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:43:02,921 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 17:43:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-24 17:43:03,121 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:43:03,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:43:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1683578684, now seen corresponding path program 1 times [2023-12-24 17:43:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:43:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69534181] [2023-12-24 17:43:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:43:03,122 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 [2023-12-24 17:43:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:43:03,123 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-24 17:43:03,124 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 (29)] Waiting until timeout for monitored process [2023-12-24 17:43:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:43:03,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:43:03,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:43:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:43:03,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:43:03,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:43:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69534181] [2023-12-24 17:43:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69534181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:43:03,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:43:03,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:43:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712389083] [2023-12-24 17:43:03,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:43:03,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:43:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:43:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:43:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:43:03,600 INFO L87 Difference]: Start difference. First operand 704 states and 941 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:43:03,840 INFO L93 Difference]: Finished difference Result 1413 states and 1888 transitions. [2023-12-24 17:43:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:43:03,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2023-12-24 17:43:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:43:03,843 INFO L225 Difference]: With dead ends: 1413 [2023-12-24 17:43:03,843 INFO L226 Difference]: Without dead ends: 768 [2023-12-24 17:43:03,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:43:03,844 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 47 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:43:03,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 663 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:43:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-12-24 17:43:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 736. [2023-12-24 17:43:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 638 states have (on average 1.255485893416928) internal successors, (801), 643 states have internal predecessors, (801), 86 states have call successors, (86), 11 states have call predecessors, (86), 11 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:43:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 973 transitions. [2023-12-24 17:43:03,968 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 973 transitions. Word has length 138 [2023-12-24 17:43:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:43:03,968 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 973 transitions. [2023-12-24 17:43:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 973 transitions. [2023-12-24 17:43:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-24 17:43:03,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:43:03,969 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:43:03,986 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 (29)] Forceful destruction successful, exit code 0 [2023-12-24 17:43:04,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-24 17:43:04,187 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:43:04,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:43:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1541447342, now seen corresponding path program 1 times [2023-12-24 17:43:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:43:04,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78712601] [2023-12-24 17:43:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:43:04,188 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 [2023-12-24 17:43:04,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:43:04,188 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-24 17:43:04,189 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 (30)] Waiting until timeout for monitored process [2023-12-24 17:43:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:43:04,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:43:04,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:43:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:43:04,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:43:04,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:43:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78712601] [2023-12-24 17:43:04,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78712601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:43:04,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:43:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:43:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760517351] [2023-12-24 17:43:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:43:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:43:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:43:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:43:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:43:04,704 INFO L87 Difference]: Start difference. First operand 736 states and 973 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:43:04,865 INFO L93 Difference]: Finished difference Result 1421 states and 1876 transitions. [2023-12-24 17:43:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:43:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2023-12-24 17:43:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:43:04,868 INFO L225 Difference]: With dead ends: 1421 [2023-12-24 17:43:04,868 INFO L226 Difference]: Without dead ends: 744 [2023-12-24 17:43:04,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:43:04,870 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 16 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:43:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 261 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:43:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-24 17:43:04,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 720. [2023-12-24 17:43:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 622 states have (on average 1.2363344051446945) internal successors, (769), 627 states have internal predecessors, (769), 86 states have call successors, (86), 11 states have call predecessors, (86), 11 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-24 17:43:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 941 transitions. [2023-12-24 17:43:04,991 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 941 transitions. Word has length 138 [2023-12-24 17:43:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:43:04,992 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 941 transitions. [2023-12-24 17:43:04,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 941 transitions. [2023-12-24 17:43:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 17:43:04,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:43:04,992 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:43:05,005 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 (30)] Ended with exit code 0 [2023-12-24 17:43:05,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-24 17:43:05,193 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:43:05,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:43:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash 562382689, now seen corresponding path program 1 times [2023-12-24 17:43:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:43:05,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380117032] [2023-12-24 17:43:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:43:05,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:43:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:43:05,195 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-24 17:43:05,196 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 (31)] Waiting until timeout for monitored process [2023-12-24 17:43:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:43:05,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:43:05,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:43:05,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:43:05,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 27 [2023-12-24 17:43:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:43:05,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:43:05,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:43:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380117032] [2023-12-24 17:43:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380117032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:43:05,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:43:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:43:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974046697] [2023-12-24 17:43:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:43:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:43:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:43:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:43:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:43:05,913 INFO L87 Difference]: Start difference. First operand 720 states and 941 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:07,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:10,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:43:12,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:43:17,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:43:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:43:17,415 INFO L93 Difference]: Finished difference Result 1785 states and 2304 transitions. [2023-12-24 17:43:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:43:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 140 [2023-12-24 17:43:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:43:17,443 INFO L225 Difference]: With dead ends: 1785 [2023-12-24 17:43:17,443 INFO L226 Difference]: Without dead ends: 1124 [2023-12-24 17:43:17,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:43:17,445 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:43:17,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 517 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-24 17:43:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-12-24 17:43:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1070. [2023-12-24 17:43:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 924 states have (on average 1.2012987012987013) internal successors, (1110), 937 states have internal predecessors, (1110), 125 states have call successors, (125), 20 states have call predecessors, (125), 20 states have return successors, (125), 112 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-24 17:43:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1360 transitions. [2023-12-24 17:43:17,591 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1360 transitions. Word has length 140 [2023-12-24 17:43:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:43:17,591 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1360 transitions. [2023-12-24 17:43:17,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1360 transitions. [2023-12-24 17:43:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 17:43:17,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:43:17,592 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:43:17,608 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 (31)] Ended with exit code 0 [2023-12-24 17:43:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-24 17:43:17,805 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:43:17,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:43:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 801671708, now seen corresponding path program 1 times [2023-12-24 17:43:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:43:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958786283] [2023-12-24 17:43:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:43:17,806 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 [2023-12-24 17:43:17,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:43:17,807 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-24 17:43:17,809 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 (32)] Waiting until timeout for monitored process [2023-12-24 17:43:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:43:18,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:43:18,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:43:18,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:43:18,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:43:18,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2023-12-24 17:43:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-24 17:43:18,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:43:18,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:43:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958786283] [2023-12-24 17:43:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958786283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:43:18,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:43:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:43:18,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110473021] [2023-12-24 17:43:18,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:43:18,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:43:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:43:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:43:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:43:18,944 INFO L87 Difference]: Start difference. First operand 1070 states and 1360 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:21,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:24,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:43:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:43:25,945 INFO L93 Difference]: Finished difference Result 1120 states and 1422 transitions. [2023-12-24 17:43:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:43:25,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 141 [2023-12-24 17:43:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:43:25,950 INFO L225 Difference]: With dead ends: 1120 [2023-12-24 17:43:25,950 INFO L226 Difference]: Without dead ends: 1118 [2023-12-24 17:43:25,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:43:25,951 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 116 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:43:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 732 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-24 17:43:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-12-24 17:43:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1102. [2023-12-24 17:43:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 956 states have (on average 1.1924686192468619) internal successors, (1140), 969 states have internal predecessors, (1140), 125 states have call successors, (125), 20 states have call predecessors, (125), 20 states have return successors, (125), 112 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-24 17:43:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1390 transitions. [2023-12-24 17:43:26,108 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1390 transitions. Word has length 141 [2023-12-24 17:43:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:43:26,108 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1390 transitions. [2023-12-24 17:43:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-24 17:43:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1390 transitions. [2023-12-24 17:43:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-24 17:43:26,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:43:26,109 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:43:26,128 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 17:43:26,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-24 17:43:26,310 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:43:26,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:43:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1076431322, now seen corresponding path program 1 times [2023-12-24 17:43:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:43:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789801203] [2023-12-24 17:43:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:43:26,311 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 [2023-12-24 17:43:26,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:43:26,311 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-24 17:43:26,312 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 (33)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 17:46:02,920 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 [2023-12-24 17:46:02,921 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 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 17:46:04,121 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 17:46:04,130 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forcibly destroying the process [2023-12-24 17:46:04,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-24 17:46:04,174 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 (33)] Forceful destruction successful, exit code 137 [2023-12-24 17:46:04,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-24 17:46:04,177 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:46:04,177 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 142 with TraceHistMax 15,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1789801203] and IpTcStrategyModuleCvc4 [482830955]. [2023-12-24 17:46:04,180 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:46:04,182 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 17:46:04,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 05:46:04 BoogieIcfgContainer [2023-12-24 17:46:04,184 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 17:46:04,184 INFO L158 Benchmark]: Toolchain (without parser) took 866702.81ms. Allocated memory was 211.8MB in the beginning and 265.3MB in the end (delta: 53.5MB). Free memory was 148.5MB in the beginning and 126.9MB in the end (delta: 21.6MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,184 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 211.8MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 17:46:04,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.91ms. Allocated memory was 211.8MB in the beginning and 265.3MB in the end (delta: 53.5MB). Free memory was 148.3MB in the beginning and 232.2MB in the end (delta: -84.0MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.75ms. Allocated memory is still 265.3MB. Free memory was 232.2MB in the beginning and 228.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,184 INFO L158 Benchmark]: Boogie Preprocessor took 100.89ms. Allocated memory is still 265.3MB. Free memory was 228.4MB in the beginning and 223.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,185 INFO L158 Benchmark]: RCFGBuilder took 6654.50ms. Allocated memory is still 265.3MB. Free memory was 223.7MB in the beginning and 183.3MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,185 INFO L158 Benchmark]: TraceAbstraction took 859561.68ms. Allocated memory is still 265.3MB. Free memory was 182.8MB in the beginning and 126.9MB in the end (delta: 55.9MB). Peak memory consumption was 55.9MB. Max. memory is 8.0GB. [2023-12-24 17:46:04,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 211.8MB. Free memory is still 162.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 306.91ms. Allocated memory was 211.8MB in the beginning and 265.3MB in the end (delta: 53.5MB). Free memory was 148.3MB in the beginning and 232.2MB in the end (delta: -84.0MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.75ms. Allocated memory is still 265.3MB. Free memory was 232.2MB in the beginning and 228.4MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 100.89ms. Allocated memory is still 265.3MB. Free memory was 228.4MB in the beginning and 223.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 6654.50ms. Allocated memory is still 265.3MB. Free memory was 223.7MB in the beginning and 183.3MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 859561.68ms. Allocated memory is still 265.3MB. Free memory was 182.8MB in the beginning and 126.9MB in the end (delta: 55.9MB). Peak memory consumption was 55.9MB. 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 analyzing trace of length 142 with TraceHistMax 15,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1789801203] and IpTcStrategyModuleCvc4 [482830955]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 859.5s, OverallIterations: 31, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 286.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 5307 SdHoareTripleChecker+Valid, 262.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5307 mSDsluCounter, 15560 SdHoareTripleChecker+Invalid, 256.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10955 mSDsCounter, 651 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8936 IncrementalHoareTripleChecker+Invalid, 9588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 651 mSolverCounterUnsat, 4605 mSDtfsCounter, 8936 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4834 GetRequests, 4573 SyntacticMatches, 2 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 377.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=30, InterpolantAutomatonStates: 203, 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, 30 MinimizatonAttempts, 1633 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 12.8s SatisfiabilityAnalysisTime, 390.1s InterpolantComputationTime, 4147 NumberOfCodeBlocks, 4147 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 4645 ConstructedInterpolants, 1206 QuantifiedInterpolants, 71943 SizeOfPredicates, 160 NumberOfNonLiveVariables, 8875 ConjunctsInSsa, 470 ConjunctsInUnsatCore, 35 InterpolantComputations, 30 PerfectInterpolantSequences, 14532/14700 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