/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-47.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 18:13:32,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 18:13:32,793 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 18:13:32,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 18:13:32,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 18:13:32,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 18:13:32,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 18:13:32,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 18:13:32,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 18:13:32,814 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 18:13:32,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 18:13:32,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 18:13:32,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 18:13:32,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 18:13:32,816 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 18:13:32,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 18:13:32,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 18:13:32,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 18:13:32,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 18:13:32,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 18:13:32,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 18:13:32,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 18:13:32,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 18:13:32,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 18:13:32,824 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 18:13:32,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 18:13:32,825 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 18:13:32,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 18:13:32,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 18:13:32,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 18:13:32,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 18:13:32,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 18:13:32,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 18:13:32,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 18:13:32,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:13:32,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 18:13:32,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 18:13:32,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 18:13:32,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 18:13:32,829 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 18:13:32,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 18:13:33,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 18:13:33,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 18:13:33,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 18:13:33,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 18:13:33,084 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 18:13:33,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2023-12-24 18:13:34,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 18:13:34,564 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 18:13:34,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-47.i [2023-12-24 18:13:34,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c0fb8cf/70b31f68bc0e45ed89acd842849dc569/FLAG178c1b092 [2023-12-24 18:13:34,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c0fb8cf/70b31f68bc0e45ed89acd842849dc569 [2023-12-24 18:13:34,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 18:13:34,587 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 18:13:34,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 18:13:34,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 18:13:34,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 18:13:34,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ca8939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34, skipping insertion in model container [2023-12-24 18:13:34,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 18:13:34,739 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-47.i[916,929] [2023-12-24 18:13:34,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:13:34,799 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 18:13:34,808 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-47.i[916,929] [2023-12-24 18:13:34,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:13:34,885 INFO L206 MainTranslator]: Completed translation [2023-12-24 18:13:34,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34 WrapperNode [2023-12-24 18:13:34,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 18:13:34,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 18:13:34,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 18:13:34,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 18:13:34,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,944 INFO L138 Inliner]: procedures = 33, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 449 [2023-12-24 18:13:34,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 18:13:34,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 18:13:34,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 18:13:34,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 18:13:34,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:34,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,003 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 11 initializations are split as follows [2, 9]. The 12 writes are split as follows [0, 12]. [2023-12-24 18:13:35,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 18:13:35,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 18:13:35,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 18:13:35,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 18:13:35,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (1/1) ... [2023-12-24 18:13:35,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:13:35,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 18:13:35,146 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 18:13:35,204 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 18:13:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 18:13:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 18:13:35,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 18:13:35,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 18:13:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 18:13:35,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 18:13:35,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 18:13:35,318 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 18:13:35,320 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 18:13:35,778 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 18:13:35,826 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 18:13:35,826 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 18:13:35,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:13:35 BoogieIcfgContainer [2023-12-24 18:13:35,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 18:13:35,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 18:13:35,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 18:13:35,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 18:13:35,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:13:34" (1/3) ... [2023-12-24 18:13:35,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b9170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:13:35, skipping insertion in model container [2023-12-24 18:13:35,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:13:34" (2/3) ... [2023-12-24 18:13:35,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7b9170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:13:35, skipping insertion in model container [2023-12-24 18:13:35,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:13:35" (3/3) ... [2023-12-24 18:13:35,836 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-47.i [2023-12-24 18:13:35,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 18:13:35,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 18:13:35,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 18:13:35,895 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;@624b60bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 18:13:35,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 18:13:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 78 states have internal predecessors, (116), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 18:13:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:35,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:35,908 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:35,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:35,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1467365147, now seen corresponding path program 1 times [2023-12-24 18:13:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:35,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067128873] [2023-12-24 18:13:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:35,932 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 18:13:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:35,934 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 18:13:35,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 18:13:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:36,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 18:13:36,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 18:13:36,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:36,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067128873] [2023-12-24 18:13:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067128873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 18:13:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768070825] [2023-12-24 18:13:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 18:13:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 18:13:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 18:13:36,256 INFO L87 Difference]: Start difference. First operand has 89 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 78 states have internal predecessors, (116), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:13:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:36,303 INFO L93 Difference]: Finished difference Result 175 states and 275 transitions. [2023-12-24 18:13:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 18:13:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2023-12-24 18:13:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:36,312 INFO L225 Difference]: With dead ends: 175 [2023-12-24 18:13:36,312 INFO L226 Difference]: Without dead ends: 87 [2023-12-24 18:13:36,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 78 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 18:13:36,318 INFO L413 NwaCegarLoop]: 125 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, 125 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 18:13:36,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:13:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-24 18:13:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-24 18:13:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 76 states have internal predecessors, (111), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 18:13:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2023-12-24 18:13:36,354 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 79 [2023-12-24 18:13:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:36,354 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2023-12-24 18:13:36,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:13:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2023-12-24 18:13:36,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:36,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:36,359 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:36,367 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 (2)] Forceful destruction successful, exit code 0 [2023-12-24 18:13:36,566 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 18:13:36,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:36,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 636971667, now seen corresponding path program 1 times [2023-12-24 18:13:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515145312] [2023-12-24 18:13:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:36,569 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 18:13:36,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:36,572 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 18:13:36,611 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 18:13:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:36,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 18:13:36,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:36,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:36,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515145312] [2023-12-24 18:13:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515145312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:13:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975070170] [2023-12-24 18:13:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 18:13:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 18:13:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:13:36,913 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:37,009 INFO L93 Difference]: Finished difference Result 174 states and 259 transitions. [2023-12-24 18:13:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 18:13:37,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-12-24 18:13:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:37,012 INFO L225 Difference]: With dead ends: 174 [2023-12-24 18:13:37,012 INFO L226 Difference]: Without dead ends: 88 [2023-12-24 18:13:37,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 18:13:37,014 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:37,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:13:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-24 18:13:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-24 18:13:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 18:13:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 130 transitions. [2023-12-24 18:13:37,021 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 130 transitions. Word has length 79 [2023-12-24 18:13:37,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:37,022 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 130 transitions. [2023-12-24 18:13:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 130 transitions. [2023-12-24 18:13:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:37,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:37,024 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:37,039 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 18:13:37,236 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 18:13:37,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:37,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1357173039, now seen corresponding path program 1 times [2023-12-24 18:13:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795514235] [2023-12-24 18:13:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:37,239 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 18:13:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:37,243 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 18:13:37,296 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 18:13:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:37,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:13:37,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:37,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:37,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795514235] [2023-12-24 18:13:37,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795514235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:37,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:37,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:13:37,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253577935] [2023-12-24 18:13:37,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:37,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:13:37,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:13:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:13:37,552 INFO L87 Difference]: Start difference. First operand 88 states and 130 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:37,662 INFO L93 Difference]: Finished difference Result 201 states and 298 transitions. [2023-12-24 18:13:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:13:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-12-24 18:13:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:37,671 INFO L225 Difference]: With dead ends: 201 [2023-12-24 18:13:37,671 INFO L226 Difference]: Without dead ends: 114 [2023-12-24 18:13:37,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:13:37,674 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 90 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:37,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 523 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:13:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-24 18:13:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2023-12-24 18:13:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.4375) internal successors, (115), 80 states have internal predecessors, (115), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 18:13:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 133 transitions. [2023-12-24 18:13:37,685 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 133 transitions. Word has length 79 [2023-12-24 18:13:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:37,685 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 133 transitions. [2023-12-24 18:13:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2023-12-24 18:13:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:37,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:37,687 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:37,694 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 18:13:37,890 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 18:13:37,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:37,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -754228705, now seen corresponding path program 1 times [2023-12-24 18:13:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521134081] [2023-12-24 18:13:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:37,894 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 18:13:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:37,895 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 18:13:37,921 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 18:13:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:38,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:13:38,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:38,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:38,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521134081] [2023-12-24 18:13:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521134081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:38,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:13:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822964501] [2023-12-24 18:13:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:38,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:13:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:13:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:13:38,108 INFO L87 Difference]: Start difference. First operand 91 states and 133 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:38,183 INFO L93 Difference]: Finished difference Result 190 states and 277 transitions. [2023-12-24 18:13:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:13:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-12-24 18:13:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:38,184 INFO L225 Difference]: With dead ends: 190 [2023-12-24 18:13:38,184 INFO L226 Difference]: Without dead ends: 100 [2023-12-24 18:13:38,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:13:38,185 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 10 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 476 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:13:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-24 18:13:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2023-12-24 18:13:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 84 states have internal predecessors, (119), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-24 18:13:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2023-12-24 18:13:38,191 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 79 [2023-12-24 18:13:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:38,191 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2023-12-24 18:13:38,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2023-12-24 18:13:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:38,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:38,193 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:38,211 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 18:13:38,399 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 18:13:38,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:38,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -754169123, now seen corresponding path program 1 times [2023-12-24 18:13:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433511081] [2023-12-24 18:13:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:38,401 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 18:13:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:38,406 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 18:13:38,407 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 18:13:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:38,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 18:13:38,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:38,766 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 18:13:39,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:39,028 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 127 treesize of output 69 [2023-12-24 18:13:39,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:39,264 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 142 treesize of output 72 [2023-12-24 18:13:39,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:39,448 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 137 treesize of output 82 [2023-12-24 18:13:39,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:39,761 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 152 treesize of output 85 [2023-12-24 18:13:40,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:40,059 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 154 treesize of output 96 [2023-12-24 18:13:40,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:40,228 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 207 treesize of output 75 [2023-12-24 18:13:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-24 18:13:40,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:40,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433511081] [2023-12-24 18:13:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433511081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:13:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296309258] [2023-12-24 18:13:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:13:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:13:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:13:40,305 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 18:13:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:43,243 INFO L93 Difference]: Finished difference Result 353 states and 503 transitions. [2023-12-24 18:13:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 18:13:43,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2023-12-24 18:13:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:43,245 INFO L225 Difference]: With dead ends: 353 [2023-12-24 18:13:43,245 INFO L226 Difference]: Without dead ends: 259 [2023-12-24 18:13:43,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:13:43,247 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 552 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:43,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 434 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 18:13:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-24 18:13:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 145. [2023-12-24 18:13:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 18:13:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 204 transitions. [2023-12-24 18:13:43,264 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 204 transitions. Word has length 79 [2023-12-24 18:13:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:43,265 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 204 transitions. [2023-12-24 18:13:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-24 18:13:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 204 transitions. [2023-12-24 18:13:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:43,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:43,267 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:43,289 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 18:13:43,467 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 18:13:43,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:43,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1140741972, now seen corresponding path program 1 times [2023-12-24 18:13:43,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:43,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720903906] [2023-12-24 18:13:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:43,469 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 18:13:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:43,470 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 18:13:43,500 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 18:13:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:43,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:13:43,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:43,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:43,736 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 154 treesize of output 46 [2023-12-24 18:13:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:43,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:43,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720903906] [2023-12-24 18:13:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720903906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:43,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:43,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:13:43,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178740050] [2023-12-24 18:13:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:43,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:13:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:13:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:13:43,831 INFO L87 Difference]: Start difference. First operand 145 states and 204 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:45,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:13:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:48,398 INFO L93 Difference]: Finished difference Result 425 states and 597 transitions. [2023-12-24 18:13:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:13:48,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-12-24 18:13:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:48,401 INFO L225 Difference]: With dead ends: 425 [2023-12-24 18:13:48,401 INFO L226 Difference]: Without dead ends: 281 [2023-12-24 18:13:48,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:13:48,402 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 152 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:48,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 255 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-24 18:13:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-24 18:13:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 147. [2023-12-24 18:13:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 124 states have internal predecessors, (170), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 18:13:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 206 transitions. [2023-12-24 18:13:48,418 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 206 transitions. Word has length 79 [2023-12-24 18:13:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:48,418 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 206 transitions. [2023-12-24 18:13:48,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 206 transitions. [2023-12-24 18:13:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-24 18:13:48,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:48,420 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:48,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 18:13:48,638 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 18:13:48,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -727103521, now seen corresponding path program 1 times [2023-12-24 18:13:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41989284] [2023-12-24 18:13:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:48,640 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 18:13:48,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:48,642 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 18:13:48,643 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 18:13:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:48,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:13:48,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:48,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:48,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41989284] [2023-12-24 18:13:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41989284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:13:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186692551] [2023-12-24 18:13:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:13:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:13:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:13:48,833 INFO L87 Difference]: Start difference. First operand 147 states and 206 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:48,908 INFO L93 Difference]: Finished difference Result 297 states and 417 transitions. [2023-12-24 18:13:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:13:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2023-12-24 18:13:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:48,909 INFO L225 Difference]: With dead ends: 297 [2023-12-24 18:13:48,909 INFO L226 Difference]: Without dead ends: 151 [2023-12-24 18:13:48,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 18:13:48,910 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 7 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:48,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 373 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:13:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-24 18:13:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2023-12-24 18:13:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 124 states have internal predecessors, (169), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 18:13:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 205 transitions. [2023-12-24 18:13:48,921 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 205 transitions. Word has length 79 [2023-12-24 18:13:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:48,921 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 205 transitions. [2023-12-24 18:13:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 205 transitions. [2023-12-24 18:13:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 18:13:48,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:48,923 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:48,964 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 18:13:49,123 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 18:13:49,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:49,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1423977953, now seen corresponding path program 1 times [2023-12-24 18:13:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971660938] [2023-12-24 18:13:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:49,125 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 18:13:49,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:49,127 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 18:13:49,128 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 18:13:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:49,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:13:49,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:49,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:49,409 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 66 treesize of output 24 [2023-12-24 18:13:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:49,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:13:49,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971660938] [2023-12-24 18:13:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971660938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:13:49,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:13:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:13:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548584674] [2023-12-24 18:13:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:49,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:13:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:13:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:13:49,452 INFO L87 Difference]: Start difference. First operand 147 states and 205 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:50,694 INFO L93 Difference]: Finished difference Result 459 states and 643 transitions. [2023-12-24 18:13:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:13:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 81 [2023-12-24 18:13:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:50,697 INFO L225 Difference]: With dead ends: 459 [2023-12-24 18:13:50,697 INFO L226 Difference]: Without dead ends: 313 [2023-12-24 18:13:50,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:13:50,698 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 182 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:50,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 334 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 18:13:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-24 18:13:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 264. [2023-12-24 18:13:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 219 states have (on average 1.3378995433789955) internal successors, (293), 219 states have internal predecessors, (293), 36 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:13:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2023-12-24 18:13:50,744 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 81 [2023-12-24 18:13:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:50,745 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2023-12-24 18:13:50,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2023-12-24 18:13:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 18:13:50,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:50,748 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:50,765 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 18:13:50,964 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 18:13:50,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:50,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash -124621637, now seen corresponding path program 1 times [2023-12-24 18:13:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:50,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442796979] [2023-12-24 18:13:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:50,965 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 18:13:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:50,995 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 18:13:51,028 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 18:13:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:51,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 18:13:51,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:51,236 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 18:13:51,446 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 52 treesize of output 24 [2023-12-24 18:13:51,565 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 47 treesize of output 34 [2023-12-24 18:13:51,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:51,750 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 57 treesize of output 47 [2023-12-24 18:13:52,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:52,066 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 51 [2023-12-24 18:13:52,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:52,317 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 64 [2023-12-24 18:13:56,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:56,106 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 101 treesize of output 47 [2023-12-24 18:13:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 96 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-24 18:13:56,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:13:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:13:56,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:56,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442796979] [2023-12-24 18:13:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442796979] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:13:56,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:13:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 20 [2023-12-24 18:13:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681715296] [2023-12-24 18:13:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:13:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:13:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=307, Unknown=1, NotChecked=0, Total=380 [2023-12-24 18:13:56,405 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:13:57,109 INFO L93 Difference]: Finished difference Result 714 states and 988 transitions. [2023-12-24 18:13:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:13:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 81 [2023-12-24 18:13:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:13:57,112 INFO L225 Difference]: With dead ends: 714 [2023-12-24 18:13:57,112 INFO L226 Difference]: Without dead ends: 451 [2023-12-24 18:13:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=95, Invalid=456, Unknown=1, NotChecked=0, Total=552 [2023-12-24 18:13:57,114 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 204 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:13:57,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 406 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 18:13:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-24 18:13:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 405. [2023-12-24 18:13:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 356 states have (on average 1.3623595505617978) internal successors, (485), 358 states have internal predecessors, (485), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 18:13:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 561 transitions. [2023-12-24 18:13:57,137 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 561 transitions. Word has length 81 [2023-12-24 18:13:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:13:57,137 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 561 transitions. [2023-12-24 18:13:57,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:13:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 561 transitions. [2023-12-24 18:13:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 18:13:57,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:13:57,138 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:57,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-24 18:13:57,345 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 18:13:57,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:13:57,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:13:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 916042595, now seen corresponding path program 1 times [2023-12-24 18:13:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:13:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990031095] [2023-12-24 18:13:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:13:57,347 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 18:13:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:13:57,348 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 18:13:57,391 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 18:13:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:13:57,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 18:13:57,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:13:57,653 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 18:13:57,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:57,973 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 125 treesize of output 67 [2023-12-24 18:13:58,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:58,195 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 135 treesize of output 80 [2023-12-24 18:13:58,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:58,484 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 145 treesize of output 93 [2023-12-24 18:13:58,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:58,864 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 155 treesize of output 106 [2023-12-24 18:13:59,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:59,326 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 172 treesize of output 120 [2023-12-24 18:13:59,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:13:59,603 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 225 treesize of output 81 [2023-12-24 18:14:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 18:14:00,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:14:00,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:14:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990031095] [2023-12-24 18:14:00,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990031095] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:14:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922939340] [2023-12-24 18:14:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:14:00,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:14:00,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:14:00,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:14:00,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 18:14:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:14:01,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:14:01,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:14:01,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-12-24 18:14:03,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:03,650 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 99 treesize of output 61 [2023-12-24 18:14:03,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:03,988 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 110 treesize of output 64 [2023-12-24 18:14:04,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:04,174 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 110 treesize of output 64 [2023-12-24 18:14:04,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:04,316 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 107 treesize of output 72 [2023-12-24 18:14:04,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:04,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 84 [2023-12-24 18:14:04,925 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 0 case distinctions, treesize of input 177 treesize of output 124 [2023-12-24 18:14:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 24 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 18:14:05,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:14:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1922939340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:14:05,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:14:05,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 18:14:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468879131] [2023-12-24 18:14:05,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:14:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 18:14:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:14:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 18:14:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2023-12-24 18:14:05,759 INFO L87 Difference]: Start difference. First operand 405 states and 561 transitions. Second operand has 30 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-24 18:14:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:14:17,466 INFO L93 Difference]: Finished difference Result 1424 states and 1943 transitions. [2023-12-24 18:14:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 18:14:17,468 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 81 [2023-12-24 18:14:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:14:17,484 INFO L225 Difference]: With dead ends: 1424 [2023-12-24 18:14:17,485 INFO L226 Difference]: Without dead ends: 1020 [2023-12-24 18:14:17,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=736, Invalid=3046, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 18:14:17,487 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1930 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:14:17,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 779 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-24 18:14:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-12-24 18:14:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 481. [2023-12-24 18:14:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 404 states have (on average 1.3193069306930694) internal successors, (533), 408 states have internal predecessors, (533), 56 states have call successors, (56), 20 states have call predecessors, (56), 20 states have return successors, (56), 52 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 18:14:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 645 transitions. [2023-12-24 18:14:17,544 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 645 transitions. Word has length 81 [2023-12-24 18:14:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:14:17,544 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 645 transitions. [2023-12-24 18:14:17,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 8 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-24 18:14:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 645 transitions. [2023-12-24 18:14:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-24 18:14:17,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:14:17,545 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:17,553 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 18:14:17,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 18:14:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 18:14:17,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:14:17,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:14:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1161294303, now seen corresponding path program 1 times [2023-12-24 18:14:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:14:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825121482] [2023-12-24 18:14:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:14:17,968 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 18:14:17,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:14:17,969 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 18:14:17,971 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 18:14:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:14:18,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:14:18,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:14:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-24 18:14:18,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:14:18,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:14:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825121482] [2023-12-24 18:14:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825121482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:14:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:14:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:14:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572471636] [2023-12-24 18:14:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:14:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:14:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:14:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:14:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:14:18,153 INFO L87 Difference]: Start difference. First operand 481 states and 645 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:14:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:14:18,299 INFO L93 Difference]: Finished difference Result 881 states and 1159 transitions. [2023-12-24 18:14:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:14:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2023-12-24 18:14:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:14:18,302 INFO L225 Difference]: With dead ends: 881 [2023-12-24 18:14:18,302 INFO L226 Difference]: Without dead ends: 377 [2023-12-24 18:14:18,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:14:18,303 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 6 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:14:18,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 509 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:14:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-24 18:14:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 297. [2023-12-24 18:14:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 246 states have internal predecessors, (307), 36 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-24 18:14:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 379 transitions. [2023-12-24 18:14:18,325 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 379 transitions. Word has length 81 [2023-12-24 18:14:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:14:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 379 transitions. [2023-12-24 18:14:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:14:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 379 transitions. [2023-12-24 18:14:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-24 18:14:18,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:14:18,326 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:18,333 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 18:14:18,533 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 18:14:18,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:14:18,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:14:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -695640564, now seen corresponding path program 1 times [2023-12-24 18:14:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:14:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897464373] [2023-12-24 18:14:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:14:18,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:14:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:14:18,535 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 18:14:18,577 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 18:14:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:14:18,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:14:18,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:14:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:14:18,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:14:18,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:14:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897464373] [2023-12-24 18:14:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897464373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:14:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:14:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:14:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614817650] [2023-12-24 18:14:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:14:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:14:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:14:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:14:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:14:18,766 INFO L87 Difference]: Start difference. First operand 297 states and 379 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:14:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:14:19,258 INFO L93 Difference]: Finished difference Result 899 states and 1144 transitions. [2023-12-24 18:14:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:14:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 82 [2023-12-24 18:14:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:14:19,261 INFO L225 Difference]: With dead ends: 899 [2023-12-24 18:14:19,262 INFO L226 Difference]: Without dead ends: 603 [2023-12-24 18:14:19,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 18:14:19,263 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 202 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:14:19,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 232 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 18:14:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-24 18:14:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 453. [2023-12-24 18:14:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 374 states have (on average 1.2433155080213905) internal successors, (465), 377 states have internal predecessors, (465), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:14:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 573 transitions. [2023-12-24 18:14:19,303 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 573 transitions. Word has length 82 [2023-12-24 18:14:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:14:19,303 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 573 transitions. [2023-12-24 18:14:19,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:14:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 573 transitions. [2023-12-24 18:14:19,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-24 18:14:19,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:14:19,304 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:19,310 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 (14)] Ended with exit code 0 [2023-12-24 18:14:19,509 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 18:14:19,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:14:19,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:14:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash -390385786, now seen corresponding path program 1 times [2023-12-24 18:14:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:14:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965199789] [2023-12-24 18:14:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:14:19,511 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 18:14:19,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:14:19,513 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 18:14:19,514 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 18:14:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:14:19,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:14:19,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:14:19,949 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 18:14:20,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:20,371 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 127 treesize of output 69 [2023-12-24 18:14:20,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:20,807 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 137 treesize of output 82 [2023-12-24 18:14:21,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:21,398 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 147 treesize of output 95 [2023-12-24 18:14:22,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:22,029 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 157 treesize of output 108 [2023-12-24 18:14:22,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:22,827 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 174 treesize of output 122 [2023-12-24 18:14:23,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:23,220 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 190 treesize of output 136 [2023-12-24 18:14:27,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:27,673 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 251 treesize of output 179 [2023-12-24 18:14:28,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:28,620 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 401 treesize of output 145 [2023-12-24 18:14:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 18:14:29,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:14:29,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:14:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965199789] [2023-12-24 18:14:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965199789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:14:29,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:14:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-24 18:14:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138469037] [2023-12-24 18:14:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:14:29,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 18:14:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:14:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 18:14:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=316, Unknown=1, NotChecked=0, Total=420 [2023-12-24 18:14:29,013 INFO L87 Difference]: Start difference. First operand 453 states and 573 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-24 18:14:34,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:14:38,363 WARN L539 Checker$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 [0] [2023-12-24 18:14:42,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:14:45,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:14:49,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:14:53,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:14:57,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:01,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:04,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:08,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:12,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:16,622 WARN L539 Checker$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 [0] [2023-12-24 18:15:20,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:24,757 WARN L539 Checker$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 [0] [2023-12-24 18:15:27,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:30,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:34,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:37,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:15:41,337 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 [0] [2023-12-24 18:15:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:15:47,711 INFO L93 Difference]: Finished difference Result 1375 states and 1780 transitions. [2023-12-24 18:15:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-24 18:15:47,720 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 83 [2023-12-24 18:15:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:15:47,723 INFO L225 Difference]: With dead ends: 1375 [2023-12-24 18:15:47,723 INFO L226 Difference]: Without dead ends: 923 [2023-12-24 18:15:47,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=407, Invalid=1314, Unknown=1, NotChecked=0, Total=1722 [2023-12-24 18:15:47,724 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 720 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 20 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:15:47,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1122 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1617 Invalid, 19 Unknown, 0 Unchecked, 75.8s Time] [2023-12-24 18:15:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-24 18:15:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 537. [2023-12-24 18:15:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 452 states have (on average 1.25) internal successors, (565), 452 states have internal predecessors, (565), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:15:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 673 transitions. [2023-12-24 18:15:47,766 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 673 transitions. Word has length 83 [2023-12-24 18:15:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:15:47,766 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 673 transitions. [2023-12-24 18:15:47,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-24 18:15:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 673 transitions. [2023-12-24 18:15:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 18:15:47,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:15:47,767 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:47,773 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 18:15:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:15:47,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:15:47,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:15:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash 543761826, now seen corresponding path program 1 times [2023-12-24 18:15:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:15:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968860525] [2023-12-24 18:15:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:15:47,970 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 18:15:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:15:47,971 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:15:47,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 18:15:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:15:48,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 18:15:48,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:15:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:15:48,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:15:48,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:15:48,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968860525] [2023-12-24 18:15:48,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968860525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:15:48,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:15:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:15:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908199832] [2023-12-24 18:15:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:15:48,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 18:15:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:15:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 18:15:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:15:48,136 INFO L87 Difference]: Start difference. First operand 537 states and 673 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:15:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:15:48,219 INFO L93 Difference]: Finished difference Result 1088 states and 1366 transitions. [2023-12-24 18:15:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 18:15:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2023-12-24 18:15:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:15:48,230 INFO L225 Difference]: With dead ends: 1088 [2023-12-24 18:15:48,230 INFO L226 Difference]: Without dead ends: 552 [2023-12-24 18:15:48,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 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 18:15:48,232 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 19 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:15:48,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 217 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:15:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-24 18:15:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 540. [2023-12-24 18:15:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 455 states have (on average 1.2483516483516484) internal successors, (568), 455 states have internal predecessors, (568), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:15:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 676 transitions. [2023-12-24 18:15:48,307 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 676 transitions. Word has length 84 [2023-12-24 18:15:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:15:48,307 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 676 transitions. [2023-12-24 18:15:48,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:15:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 676 transitions. [2023-12-24 18:15:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 18:15:48,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:15:48,309 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:48,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 18:15:48,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:15:48,515 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:15:48,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:15:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash -265584800, now seen corresponding path program 1 times [2023-12-24 18:15:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:15:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610840929] [2023-12-24 18:15:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:15:48,516 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 18:15:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:15:48,517 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 18:15:48,518 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 18:15:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:15:48,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 18:15:48,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:15:48,789 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 18:15:48,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:48,996 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 127 treesize of output 69 [2023-12-24 18:15:49,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:49,169 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 137 treesize of output 82 [2023-12-24 18:15:49,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:49,393 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 147 treesize of output 95 [2023-12-24 18:15:49,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:49,713 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 162 treesize of output 98 [2023-12-24 18:15:49,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:49,953 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 164 treesize of output 109 [2023-12-24 18:15:50,142 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 0 case distinctions, treesize of input 237 treesize of output 153 [2023-12-24 18:15:51,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:51,467 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 488 treesize of output 164 [2023-12-24 18:15:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 18:15:51,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:15:51,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:15:51,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610840929] [2023-12-24 18:15:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610840929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:15:51,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:15:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 18:15:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237394072] [2023-12-24 18:15:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:15:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 18:15:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:15:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 18:15:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-24 18:15:51,560 INFO L87 Difference]: Start difference. First operand 540 states and 676 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-24 18:15:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:15:56,476 INFO L93 Difference]: Finished difference Result 784 states and 1001 transitions. [2023-12-24 18:15:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 18:15:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 84 [2023-12-24 18:15:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:15:56,479 INFO L225 Difference]: With dead ends: 784 [2023-12-24 18:15:56,479 INFO L226 Difference]: Without dead ends: 782 [2023-12-24 18:15:56,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-12-24 18:15:56,480 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 417 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:15:56,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 549 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 18:15:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-24 18:15:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 643. [2023-12-24 18:15:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 558 states have (on average 1.2598566308243728) internal successors, (703), 558 states have internal predecessors, (703), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:15:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 811 transitions. [2023-12-24 18:15:56,519 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 811 transitions. Word has length 84 [2023-12-24 18:15:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:15:56,520 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 811 transitions. [2023-12-24 18:15:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-24 18:15:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 811 transitions. [2023-12-24 18:15:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-24 18:15:56,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:15:56,521 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:56,528 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 (17)] Ended with exit code 0 [2023-12-24 18:15:56,726 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 18:15:56,726 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:15:56,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:15:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -265525218, now seen corresponding path program 1 times [2023-12-24 18:15:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:15:56,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687531607] [2023-12-24 18:15:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:15:56,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:15:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:15:56,728 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 18:15:56,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 18:15:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:15:56,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:15:56,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:15:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:15:56,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:15:56,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:15:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687531607] [2023-12-24 18:15:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687531607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:15:56,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:15:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:15:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738972109] [2023-12-24 18:15:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:15:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:15:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:15:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:15:56,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:15:56,912 INFO L87 Difference]: Start difference. First operand 643 states and 811 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:15:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:15:56,995 INFO L93 Difference]: Finished difference Result 1309 states and 1651 transitions. [2023-12-24 18:15:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:15:56,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 84 [2023-12-24 18:15:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:15:56,997 INFO L225 Difference]: With dead ends: 1309 [2023-12-24 18:15:56,997 INFO L226 Difference]: Without dead ends: 667 [2023-12-24 18:15:56,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:15:56,999 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 23 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:15:56,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 432 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 18:15:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-12-24 18:15:57,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 661. [2023-12-24 18:15:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 576 states have (on average 1.2517361111111112) internal successors, (721), 576 states have internal predecessors, (721), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:15:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 829 transitions. [2023-12-24 18:15:57,038 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 829 transitions. Word has length 84 [2023-12-24 18:15:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:15:57,039 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 829 transitions. [2023-12-24 18:15:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:15:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 829 transitions. [2023-12-24 18:15:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 18:15:57,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:15:57,040 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:57,056 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 18:15:57,245 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 18:15:57,246 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:15:57,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:15:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2125784332, now seen corresponding path program 1 times [2023-12-24 18:15:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:15:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114800659] [2023-12-24 18:15:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:15:57,247 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 18:15:57,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:15:57,273 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 18:15:57,307 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 18:15:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:15:57,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 18:15:57,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:15:57,570 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 18:15:58,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:58,241 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 125 treesize of output 67 [2023-12-24 18:15:58,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:58,704 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 135 treesize of output 80 [2023-12-24 18:15:59,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:59,104 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 145 treesize of output 93 [2023-12-24 18:15:59,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:59,577 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 160 treesize of output 96 [2023-12-24 18:15:59,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:59,968 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 162 treesize of output 107 [2023-12-24 18:16:00,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:00,286 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 178 treesize of output 130 [2023-12-24 18:16:04,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:04,240 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 224 treesize of output 80 [2023-12-24 18:16:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 88 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 18:16:04,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:16:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 18:16:04,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:16:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114800659] [2023-12-24 18:16:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114800659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 18:16:04,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:16:04,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 22 [2023-12-24 18:16:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896625862] [2023-12-24 18:16:04,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:16:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 18:16:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:16:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 18:16:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=341, Unknown=1, NotChecked=0, Total=462 [2023-12-24 18:16:04,771 INFO L87 Difference]: Start difference. First operand 661 states and 829 transitions. Second operand has 22 states, 20 states have (on average 4.1) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:16:11,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:14,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:18,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:22,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:26,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:30,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:34,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:37,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:41,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:44,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:48,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:52,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:56,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:16:59,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:02,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:06,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:10,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:14,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:18,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:17:19,754 INFO L93 Difference]: Finished difference Result 1528 states and 1930 transitions. [2023-12-24 18:17:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 18:17:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.1) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 85 [2023-12-24 18:17:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:17:19,774 INFO L225 Difference]: With dead ends: 1528 [2023-12-24 18:17:19,774 INFO L226 Difference]: Without dead ends: 868 [2023-12-24 18:17:19,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=363, Invalid=1118, Unknown=1, NotChecked=0, Total=1482 [2023-12-24 18:17:19,775 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 741 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 51 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:17:19,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 864 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1478 Invalid, 19 Unknown, 0 Unchecked, 73.6s Time] [2023-12-24 18:17:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-24 18:17:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 684. [2023-12-24 18:17:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 599 states have (on average 1.2587646076794659) internal successors, (754), 599 states have internal predecessors, (754), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:17:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 862 transitions. [2023-12-24 18:17:19,863 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 862 transitions. Word has length 85 [2023-12-24 18:17:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:17:19,863 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 862 transitions. [2023-12-24 18:17:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.1) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:17:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 862 transitions. [2023-12-24 18:17:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 18:17:19,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:17:19,864 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:19,886 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 18:17:20,065 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 18:17:20,065 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:17:20,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:17:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash 537436430, now seen corresponding path program 1 times [2023-12-24 18:17:20,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:17:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835815985] [2023-12-24 18:17:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:17:20,066 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 18:17:20,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:17:20,067 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 18:17:20,071 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 18:17:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:17:20,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 18:17:20,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:17:20,326 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 18:17:20,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:20,806 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 130 treesize of output 57 [2023-12-24 18:17:21,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:21,064 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 125 treesize of output 67 [2023-12-24 18:17:21,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:21,520 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 140 treesize of output 70 [2023-12-24 18:17:21,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:21,990 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 135 treesize of output 80 [2023-12-24 18:17:22,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:22,623 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 152 treesize of output 103 [2023-12-24 18:17:22,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:22,920 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 178 treesize of output 106 [2023-12-24 18:17:23,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:23,135 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 166 treesize of output 124 [2023-12-24 18:17:27,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:27,498 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 217 treesize of output 75 [2023-12-24 18:17:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 88 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-24 18:17:27,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:17:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 18:17:28,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:17:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835815985] [2023-12-24 18:17:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835815985] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 18:17:28,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:17:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 21 [2023-12-24 18:17:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473372197] [2023-12-24 18:17:28,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:17:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 18:17:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:17:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 18:17:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=313, Unknown=1, NotChecked=0, Total=420 [2023-12-24 18:17:28,407 INFO L87 Difference]: Start difference. First operand 684 states and 862 transitions. Second operand has 21 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:17:37,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:41,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:45,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:49,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:53,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:17:57,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:01,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:05,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:09,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:13,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:17,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:21,607 WARN L539 Checker$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 [0] [2023-12-24 18:18:25,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:29,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:33,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:37,765 WARN L539 Checker$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 [0] [2023-12-24 18:18:41,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:45,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:49,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:53,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:18:57,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:01,934 WARN L539 Checker$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 [0] [2023-12-24 18:19:05,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:09,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:13,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:18,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:22,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:26,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:30,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:34,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:38,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:42,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:46,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:50,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:54,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:19:58,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:02,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:06,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:10,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:14,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:18,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:22,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:26,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:30,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:34,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:38,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:42,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:46,878 WARN L539 Checker$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 [0] [2023-12-24 18:20:50,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:55,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:20:59,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:03,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:07,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:11,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:15,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:19,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:23,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:27,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:31,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:35,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:39,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:44,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:48,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:52,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:21:56,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:00,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:04,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:08,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:13,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:22:13,531 INFO L93 Difference]: Finished difference Result 1701 states and 2162 transitions. [2023-12-24 18:22:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 18:22:13,532 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) Word has length 85 [2023-12-24 18:22:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:22:13,534 INFO L225 Difference]: With dead ends: 1701 [2023-12-24 18:22:13,534 INFO L226 Difference]: Without dead ends: 1018 [2023-12-24 18:22:13,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=355, Invalid=1126, Unknown=1, NotChecked=0, Total=1482 [2023-12-24 18:22:13,536 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 619 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 27 mSolverCounterUnsat, 69 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 281.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 69 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 282.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:22:13,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1414 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1927 Invalid, 69 Unknown, 0 Unchecked, 282.6s Time] [2023-12-24 18:22:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-24 18:22:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 689. [2023-12-24 18:22:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 604 states have (on average 1.2533112582781456) internal successors, (757), 604 states have internal predecessors, (757), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:22:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 865 transitions. [2023-12-24 18:22:13,581 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 865 transitions. Word has length 85 [2023-12-24 18:22:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:22:13,582 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 865 transitions. [2023-12-24 18:22:13,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 6 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (18), 4 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:22:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 865 transitions. [2023-12-24 18:22:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-24 18:22:13,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:22:13,583 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:13,602 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 18:22:13,790 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 18:22:13,791 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:22:13,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:22:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash 795601868, now seen corresponding path program 1 times [2023-12-24 18:22:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:22:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986977659] [2023-12-24 18:22:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:22:13,791 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 18:22:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:22:13,792 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 18:22:13,797 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 18:22:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:22:14,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 18:22:14,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:22:14,112 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 18:22:14,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:14,373 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 125 treesize of output 67 [2023-12-24 18:22:14,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:14,549 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 135 treesize of output 80 [2023-12-24 18:22:14,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:14,782 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 150 treesize of output 83 [2023-12-24 18:22:14,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:14,957 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 150 treesize of output 83 [2023-12-24 18:22:15,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:15,169 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 152 treesize of output 94 [2023-12-24 18:22:15,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:15,331 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 168 treesize of output 117 [2023-12-24 18:22:19,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:19,702 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 243 treesize of output 162 [2023-12-24 18:22:20,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:20,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 339 treesize of output 119 [2023-12-24 18:22:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 24 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-24 18:22:20,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:22:21,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:22:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986977659] [2023-12-24 18:22:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986977659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:22:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50089777] [2023-12-24 18:22:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:22:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:22:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:22:21,057 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:22:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-24 18:22:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:22:22,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 18:22:22,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:22:22,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-12-24 18:22:26,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:26,400 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 102 treesize of output 53 [2023-12-24 18:22:26,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:26,652 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 102 treesize of output 53 [2023-12-24 18:22:26,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:26,910 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 99 treesize of output 61 [2023-12-24 18:22:27,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:27,708 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 110 treesize of output 64 [2023-12-24 18:22:28,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:28,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 80 [2023-12-24 18:22:28,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:28,841 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 130 treesize of output 83 [2023-12-24 18:22:30,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:30,073 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 169 treesize of output 120 [2023-12-24 18:22:31,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:31,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 289 treesize of output 125 [2023-12-24 18:22:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-24 18:22:31,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:22:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [50089777] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:22:32,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:22:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 36 [2023-12-24 18:22:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833910115] [2023-12-24 18:22:32,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:22:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 18:22:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:22:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 18:22:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1941, Unknown=1, NotChecked=0, Total=2256 [2023-12-24 18:22:32,451 INFO L87 Difference]: Start difference. First operand 689 states and 865 transitions. Second operand has 37 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 33 states have internal predecessors, (87), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:22:41,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:52,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:22:56,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:00,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:03,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:07,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:11,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:15,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:20,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:24,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:28,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:32,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:36,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:40,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:44,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:48,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:53,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:23:57,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:24:02,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:24:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:24:15,911 INFO L93 Difference]: Finished difference Result 1770 states and 2244 transitions. [2023-12-24 18:24:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 18:24:15,913 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 33 states have internal predecessors, (87), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 85 [2023-12-24 18:24:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:24:15,916 INFO L225 Difference]: With dead ends: 1770 [2023-12-24 18:24:15,916 INFO L226 Difference]: Without dead ends: 1082 [2023-12-24 18:24:15,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2165 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=1351, Invalid=7018, Unknown=3, NotChecked=0, Total=8372 [2023-12-24 18:24:15,919 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1151 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 65 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:24:15,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1769 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3302 Invalid, 19 Unknown, 0 Unchecked, 85.8s Time] [2023-12-24 18:24:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-12-24 18:24:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 676. [2023-12-24 18:24:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 591 states have (on average 1.2538071065989849) internal successors, (741), 591 states have internal predecessors, (741), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:24:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 849 transitions. [2023-12-24 18:24:15,971 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 849 transitions. Word has length 85 [2023-12-24 18:24:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:24:15,972 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 849 transitions. [2023-12-24 18:24:15,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 33 states have internal predecessors, (87), 6 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-24 18:24:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 849 transitions. [2023-12-24 18:24:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-24 18:24:15,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:24:15,973 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:15,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-24 18:24:16,193 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 18:24:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 18:24:16,391 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:24:16,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:24:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1407121346, now seen corresponding path program 1 times [2023-12-24 18:24:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:24:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016806124] [2023-12-24 18:24:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:24:16,392 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 18:24:16,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:24:16,394 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 18:24:16,394 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 18:24:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:24:16,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 18:24:16,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:24:16,616 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 18:24:16,644 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 18:24:16,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:16,728 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 18:24:17,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:17,015 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 80 treesize of output 56 [2023-12-24 18:24:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-24 18:24:17,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:24:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:24:17,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:24:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016806124] [2023-12-24 18:24:17,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016806124] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:24:17,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:24:17,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 18:24:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372444192] [2023-12-24 18:24:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:24:17,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:24:17,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:24:17,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:24:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:24:17,319 INFO L87 Difference]: Start difference. First operand 676 states and 849 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:24:17,899 INFO L93 Difference]: Finished difference Result 1754 states and 2208 transitions. [2023-12-24 18:24:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:24:17,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2023-12-24 18:24:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:24:17,902 INFO L225 Difference]: With dead ends: 1754 [2023-12-24 18:24:17,903 INFO L226 Difference]: Without dead ends: 1079 [2023-12-24 18:24:17,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-24 18:24:17,904 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 159 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:24:17,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 214 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 18:24:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-12-24 18:24:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 883. [2023-12-24 18:24:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 798 states have (on average 1.2644110275689222) internal successors, (1009), 798 states have internal predecessors, (1009), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:24:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1117 transitions. [2023-12-24 18:24:17,965 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1117 transitions. Word has length 86 [2023-12-24 18:24:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:24:17,965 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1117 transitions. [2023-12-24 18:24:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1117 transitions. [2023-12-24 18:24:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-24 18:24:17,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:24:17,966 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:17,975 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 18:24:18,175 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 18:24:18,175 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:24:18,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:24:18,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1800148356, now seen corresponding path program 1 times [2023-12-24 18:24:18,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:24:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187648785] [2023-12-24 18:24:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:24:18,176 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 18:24:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:24:18,178 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 18:24:18,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 18:24:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:24:18,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 18:24:18,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:24:18,376 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 18:24:18,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:18,415 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 18:24:18,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:18,538 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 57 [2023-12-24 18:24:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 18:24:22,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:24:22,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:24:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187648785] [2023-12-24 18:24:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187648785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:24:22,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:24:22,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:24:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705162601] [2023-12-24 18:24:22,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:24:22,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:24:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:24:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:24:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2023-12-24 18:24:22,950 INFO L87 Difference]: Start difference. First operand 883 states and 1117 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:24:27,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:24:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:24:28,978 INFO L93 Difference]: Finished difference Result 2069 states and 2589 transitions. [2023-12-24 18:24:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 18:24:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2023-12-24 18:24:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:24:28,982 INFO L225 Difference]: With dead ends: 2069 [2023-12-24 18:24:28,983 INFO L226 Difference]: Without dead ends: 1187 [2023-12-24 18:24:28,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=111, Invalid=394, Unknown=1, NotChecked=0, Total=506 [2023-12-24 18:24:28,984 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 378 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:24:28,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 380 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 697 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 18:24:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-12-24 18:24:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 949. [2023-12-24 18:24:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 864 states have (on average 1.2511574074074074) internal successors, (1081), 864 states have internal predecessors, (1081), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:24:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1189 transitions. [2023-12-24 18:24:29,091 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1189 transitions. Word has length 86 [2023-12-24 18:24:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:24:29,091 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1189 transitions. [2023-12-24 18:24:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:24:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1189 transitions. [2023-12-24 18:24:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-24 18:24:29,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:24:29,092 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:29,113 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 18:24:29,299 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 18:24:29,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:24:29,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:24:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash 426277530, now seen corresponding path program 1 times [2023-12-24 18:24:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:24:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294548014] [2023-12-24 18:24:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:24:29,301 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 18:24:29,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:24:29,318 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 18:24:29,336 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 18:24:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:24:29,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 18:24:29,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:24:29,636 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 18:24:29,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:29,982 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 130 treesize of output 57 [2023-12-24 18:24:30,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:30,158 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 125 treesize of output 67 [2023-12-24 18:24:30,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:30,386 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 135 treesize of output 80 [2023-12-24 18:24:30,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:30,774 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 145 treesize of output 93 [2023-12-24 18:24:31,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:31,208 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 162 treesize of output 116 [2023-12-24 18:24:31,424 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 0 case distinctions, treesize of input 235 treesize of output 160 [2023-12-24 18:24:33,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:33,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 491 treesize of output 161 [2023-12-24 18:24:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-24 18:24:33,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:24:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:24:34,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:24:34,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294548014] [2023-12-24 18:24:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294548014] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:24:34,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:24:34,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2023-12-24 18:24:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704708274] [2023-12-24 18:24:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:24:34,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:24:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:24:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:24:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:24:34,080 INFO L87 Difference]: Start difference. First operand 949 states and 1189 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:24:35,037 INFO L93 Difference]: Finished difference Result 956 states and 1197 transitions. [2023-12-24 18:24:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:24:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2023-12-24 18:24:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:24:35,041 INFO L225 Difference]: With dead ends: 956 [2023-12-24 18:24:35,041 INFO L226 Difference]: Without dead ends: 954 [2023-12-24 18:24:35,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:24:35,042 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 83 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 18:24:35,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 291 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 18:24:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-12-24 18:24:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 769. [2023-12-24 18:24:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 684 states have (on average 1.2573099415204678) internal successors, (860), 684 states have internal predecessors, (860), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 18:24:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 968 transitions. [2023-12-24 18:24:35,101 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 968 transitions. Word has length 86 [2023-12-24 18:24:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:24:35,101 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 968 transitions. [2023-12-24 18:24:35,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 968 transitions. [2023-12-24 18:24:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 18:24:35,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:24:35,102 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:35,127 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 18:24:35,309 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 18:24:35,309 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:24:35,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:24:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1060013223, now seen corresponding path program 1 times [2023-12-24 18:24:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:24:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644720272] [2023-12-24 18:24:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:24:35,310 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 18:24:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:24:35,311 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 18:24:35,313 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 18:24:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:24:35,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 18:24:35,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:24:35,578 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 18:24:35,580 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 21 treesize of output 21 [2023-12-24 18:24:35,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:35,595 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 38 treesize of output 44 [2023-12-24 18:24:39,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:39,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 75 treesize of output 27 [2023-12-24 18:24:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:24:39,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:24:39,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:24:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644720272] [2023-12-24 18:24:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644720272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:24:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:24:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:24:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067066755] [2023-12-24 18:24:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:24:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:24:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:24:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:24:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-12-24 18:24:39,659 INFO L87 Difference]: Start difference. First operand 769 states and 968 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:43,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:24:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:24:44,680 INFO L93 Difference]: Finished difference Result 1658 states and 2098 transitions. [2023-12-24 18:24:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:24:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2023-12-24 18:24:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:24:44,683 INFO L225 Difference]: With dead ends: 1658 [2023-12-24 18:24:44,683 INFO L226 Difference]: Without dead ends: 1099 [2023-12-24 18:24:44,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2023-12-24 18:24:44,685 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 108 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:24:44,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 408 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 265 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-12-24 18:24:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-12-24 18:24:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1055. [2023-12-24 18:24:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 942 states have (on average 1.2367303609341826) internal successors, (1165), 942 states have internal predecessors, (1165), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 18:24:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1309 transitions. [2023-12-24 18:24:44,755 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1309 transitions. Word has length 87 [2023-12-24 18:24:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:24:44,756 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1309 transitions. [2023-12-24 18:24:44,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:24:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1309 transitions. [2023-12-24 18:24:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-24 18:24:44,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:24:44,757 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:44,763 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 18:24:44,964 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 18:24:44,964 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:24:44,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:24:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 489573346, now seen corresponding path program 1 times [2023-12-24 18:24:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:24:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455164811] [2023-12-24 18:24:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:24:44,965 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 18:24:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:24:44,966 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 18:24:44,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 18:24:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:24:45,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 18:24:45,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:24:45,222 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 18:24:45,224 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 21 treesize of output 21 [2023-12-24 18:24:45,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:45,236 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 38 treesize of output 44 [2023-12-24 18:24:48,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:24:48,752 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 58 [2023-12-24 18:24:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:24:56,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:24:56,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:24:56,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455164811] [2023-12-24 18:24:56,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455164811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:24:56,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:24:56,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:24:56,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208029038] [2023-12-24 18:24:56,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:24:56,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:24:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:24:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:24:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=51, Unknown=3, NotChecked=0, Total=72 [2023-12-24 18:24:56,683 INFO L87 Difference]: Start difference. First operand 1055 states and 1309 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:00,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:04,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:08,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:12,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:16,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:20,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:25,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:26,071 INFO L93 Difference]: Finished difference Result 1908 states and 2390 transitions. [2023-12-24 18:25:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 18:25:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2023-12-24 18:25:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:26,075 INFO L225 Difference]: With dead ends: 1908 [2023-12-24 18:25:26,075 INFO L226 Difference]: Without dead ends: 1123 [2023-12-24 18:25:26,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=91, Invalid=178, Unknown=3, NotChecked=0, Total=272 [2023-12-24 18:25:26,076 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 146 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:26,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 820 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 527 Invalid, 7 Unknown, 0 Unchecked, 29.1s Time] [2023-12-24 18:25:26,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-12-24 18:25:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1056. [2023-12-24 18:25:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 943 states have (on average 1.2364793213149523) internal successors, (1166), 943 states have internal predecessors, (1166), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 18:25:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1310 transitions. [2023-12-24 18:25:26,165 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1310 transitions. Word has length 89 [2023-12-24 18:25:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:26,165 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1310 transitions. [2023-12-24 18:25:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1310 transitions. [2023-12-24 18:25:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 18:25:26,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:26,166 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:26,173 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 18:25:26,373 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 18:25:26,375 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:26,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 792295287, now seen corresponding path program 1 times [2023-12-24 18:25:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:26,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063667426] [2023-12-24 18:25:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:26,375 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 18:25:26,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:26,377 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 18:25:26,377 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 18:25:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:26,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:25:26,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:26,545 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 18:25:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:26,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:26,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063667426] [2023-12-24 18:25:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063667426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:26,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:26,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:25:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958194209] [2023-12-24 18:25:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 18:25:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 18:25:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:25:26,566 INFO L87 Difference]: Start difference. First operand 1056 states and 1310 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:26,690 INFO L93 Difference]: Finished difference Result 1926 states and 2404 transitions. [2023-12-24 18:25:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 18:25:26,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 18:25:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:26,693 INFO L225 Difference]: With dead ends: 1926 [2023-12-24 18:25:26,693 INFO L226 Difference]: Without dead ends: 1056 [2023-12-24 18:25:26,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 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 18:25:26,694 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 9 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:26,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 219 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:25:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-24 18:25:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2023-12-24 18:25:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 943 states have (on average 1.2237539766702015) internal successors, (1154), 943 states have internal predecessors, (1154), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 18:25:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1298 transitions. [2023-12-24 18:25:26,785 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1298 transitions. Word has length 92 [2023-12-24 18:25:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:26,785 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1298 transitions. [2023-12-24 18:25:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1298 transitions. [2023-12-24 18:25:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 18:25:26,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:26,786 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:26,804 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 18:25:26,992 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 18:25:26,992 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:26,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 282822197, now seen corresponding path program 1 times [2023-12-24 18:25:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:26,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306131643] [2023-12-24 18:25:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:26,993 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 18:25:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:26,994 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 18:25:26,997 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 18:25:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:27,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:25:27,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:27,181 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 33 treesize of output 15 [2023-12-24 18:25:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:27,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:27,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306131643] [2023-12-24 18:25:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306131643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:25:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267214157] [2023-12-24 18:25:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:25:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:25:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:25:27,205 INFO L87 Difference]: Start difference. First operand 1056 states and 1298 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:27,555 INFO L93 Difference]: Finished difference Result 1922 states and 2368 transitions. [2023-12-24 18:25:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:25:27,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 18:25:27,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:27,558 INFO L225 Difference]: With dead ends: 1922 [2023-12-24 18:25:27,558 INFO L226 Difference]: Without dead ends: 1068 [2023-12-24 18:25:27,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 18:25:27,560 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:27,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 272 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 18:25:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-12-24 18:25:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1056. [2023-12-24 18:25:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 943 states have (on average 1.2110286320254506) internal successors, (1142), 943 states have internal predecessors, (1142), 72 states have call successors, (72), 40 states have call predecessors, (72), 40 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 18:25:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1286 transitions. [2023-12-24 18:25:27,644 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1286 transitions. Word has length 92 [2023-12-24 18:25:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:27,644 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1286 transitions. [2023-12-24 18:25:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1286 transitions. [2023-12-24 18:25:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 18:25:27,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:27,645 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:27,653 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 (29)] Ended with exit code 0 [2023-12-24 18:25:27,853 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 18:25:27,854 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:27,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash 344861811, now seen corresponding path program 1 times [2023-12-24 18:25:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114490533] [2023-12-24 18:25:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:27,855 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 18:25:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:27,856 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 18:25:27,857 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 18:25:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:28,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 18:25:28,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:28,137 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 18:25:28,167 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 18:25:28,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,248 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 28 [2023-12-24 18:25:28,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,310 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 28 [2023-12-24 18:25:28,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,378 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 43 treesize of output 39 [2023-12-24 18:25:28,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,671 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 72 treesize of output 59 [2023-12-24 18:25:28,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,746 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 98 treesize of output 62 [2023-12-24 18:25:28,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:28,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 105 treesize of output 39 [2023-12-24 18:25:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-24 18:25:28,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:25:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:29,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:29,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114490533] [2023-12-24 18:25:29,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114490533] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:25:29,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:25:29,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-12-24 18:25:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572625968] [2023-12-24 18:25:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:29,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:25:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:25:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 18:25:29,109 INFO L87 Difference]: Start difference. First operand 1056 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:30,714 INFO L93 Difference]: Finished difference Result 2198 states and 2696 transitions. [2023-12-24 18:25:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:25:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 18:25:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:30,719 INFO L225 Difference]: With dead ends: 2198 [2023-12-24 18:25:30,719 INFO L226 Difference]: Without dead ends: 1398 [2023-12-24 18:25:30,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:25:30,720 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 107 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:30,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 517 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 18:25:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-12-24 18:25:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1354. [2023-12-24 18:25:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1213 states have (on average 1.2028029678483099) internal successors, (1459), 1213 states have internal predecessors, (1459), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:25:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1639 transitions. [2023-12-24 18:25:30,855 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1639 transitions. Word has length 92 [2023-12-24 18:25:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 1354 states and 1639 transitions. [2023-12-24 18:25:30,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1639 transitions. [2023-12-24 18:25:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 18:25:30,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:30,877 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:30,887 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 (30)] Forceful destruction successful, exit code 0 [2023-12-24 18:25:31,084 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 18:25:31,085 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:31,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1454067276, now seen corresponding path program 1 times [2023-12-24 18:25:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330631901] [2023-12-24 18:25:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:31,086 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 18:25:31,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:31,087 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 18:25:31,088 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 18:25:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:31,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:25:31,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:31,280 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 32 treesize of output 14 [2023-12-24 18:25:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:31,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:31,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330631901] [2023-12-24 18:25:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330631901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:25:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108291885] [2023-12-24 18:25:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:25:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:25:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:25:31,299 INFO L87 Difference]: Start difference. First operand 1354 states and 1639 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:31,646 INFO L93 Difference]: Finished difference Result 2456 states and 2988 transitions. [2023-12-24 18:25:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:25:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 92 [2023-12-24 18:25:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:31,651 INFO L225 Difference]: With dead ends: 2456 [2023-12-24 18:25:31,651 INFO L226 Difference]: Without dead ends: 1354 [2023-12-24 18:25:31,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 18:25:31,653 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 8 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:31,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 272 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 18:25:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-12-24 18:25:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1354. [2023-12-24 18:25:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1213 states have (on average 1.1929101401483924) internal successors, (1447), 1213 states have internal predecessors, (1447), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:25:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1627 transitions. [2023-12-24 18:25:31,748 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1627 transitions. Word has length 92 [2023-12-24 18:25:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:31,748 INFO L495 AbstractCegarLoop]: Abstraction has 1354 states and 1627 transitions. [2023-12-24 18:25:31,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1627 transitions. [2023-12-24 18:25:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-24 18:25:31,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:31,750 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:31,755 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 18:25:31,955 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 18:25:31,956 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:31,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1516106890, now seen corresponding path program 1 times [2023-12-24 18:25:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95301416] [2023-12-24 18:25:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:31,957 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 18:25:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:31,958 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 18:25:31,966 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 18:25:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:32,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 18:25:32,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:32,243 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 18:25:32,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:32,281 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 18:25:32,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:32,410 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 37 [2023-12-24 18:25:32,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:32,423 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 58 treesize of output 37 [2023-12-24 18:25:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 18:25:32,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:32,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95301416] [2023-12-24 18:25:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95301416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:25:32,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057162325] [2023-12-24 18:25:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:32,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:25:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:25:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:25:32,601 INFO L87 Difference]: Start difference. First operand 1354 states and 1627 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:25:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:34,401 INFO L93 Difference]: Finished difference Result 2761 states and 3340 transitions. [2023-12-24 18:25:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 18:25:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2023-12-24 18:25:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:34,406 INFO L225 Difference]: With dead ends: 2761 [2023-12-24 18:25:34,406 INFO L226 Difference]: Without dead ends: 1727 [2023-12-24 18:25:34,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:25:34,408 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 327 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:34,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 545 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 18:25:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-24 18:25:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1411. [2023-12-24 18:25:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1270 states have (on average 1.2031496062992126) internal successors, (1528), 1270 states have internal predecessors, (1528), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:25:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1708 transitions. [2023-12-24 18:25:34,516 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1708 transitions. Word has length 92 [2023-12-24 18:25:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1708 transitions. [2023-12-24 18:25:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:25:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1708 transitions. [2023-12-24 18:25:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-24 18:25:34,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:34,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:34,528 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 (32)] Ended with exit code 0 [2023-12-24 18:25:34,726 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 18:25:34,726 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:34,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1001710954, now seen corresponding path program 1 times [2023-12-24 18:25:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283390034] [2023-12-24 18:25:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:25:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:34,728 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 18:25:34,730 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 [2023-12-24 18:25:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:34,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:25:34,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:34,953 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 18:25:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:34,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:34,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283390034] [2023-12-24 18:25:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283390034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:34,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 18:25:34,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670911370] [2023-12-24 18:25:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 18:25:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 18:25:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 18:25:34,963 INFO L87 Difference]: Start difference. First operand 1411 states and 1708 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:35,101 INFO L93 Difference]: Finished difference Result 2522 states and 3077 transitions. [2023-12-24 18:25:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 18:25:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 94 [2023-12-24 18:25:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:35,105 INFO L225 Difference]: With dead ends: 2522 [2023-12-24 18:25:35,105 INFO L226 Difference]: Without dead ends: 1431 [2023-12-24 18:25:35,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 18:25:35,106 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 15 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:35,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 217 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:25:35,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-12-24 18:25:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1411. [2023-12-24 18:25:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1270 states have (on average 1.2) internal successors, (1524), 1270 states have internal predecessors, (1524), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:25:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1704 transitions. [2023-12-24 18:25:35,201 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1704 transitions. Word has length 94 [2023-12-24 18:25:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:35,201 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1704 transitions. [2023-12-24 18:25:35,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1704 transitions. [2023-12-24 18:25:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-24 18:25:35,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:35,202 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:35,211 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 0 [2023-12-24 18:25:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:25:35,411 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:35,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash -743545516, now seen corresponding path program 1 times [2023-12-24 18:25:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525293769] [2023-12-24 18:25:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:35,412 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 18:25:35,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:35,413 INFO L229 MonitoredProcess]: Starting monitored process 34 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 18:25:35,414 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 (34)] Waiting until timeout for monitored process [2023-12-24 18:25:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:35,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:25:35,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:35,643 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 33 treesize of output 15 [2023-12-24 18:25:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:25:35,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:35,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:35,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525293769] [2023-12-24 18:25:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525293769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:35,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:25:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715520850] [2023-12-24 18:25:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:25:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:25:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:25:35,660 INFO L87 Difference]: Start difference. First operand 1411 states and 1704 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:25:36,046 INFO L93 Difference]: Finished difference Result 2550 states and 3101 transitions. [2023-12-24 18:25:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:25:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 94 [2023-12-24 18:25:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:25:36,050 INFO L225 Difference]: With dead ends: 2550 [2023-12-24 18:25:36,050 INFO L226 Difference]: Without dead ends: 1459 [2023-12-24 18:25:36,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 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 18:25:36,052 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 27 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:25:36,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 273 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 18:25:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-12-24 18:25:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1411. [2023-12-24 18:25:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1270 states have (on average 1.1968503937007875) internal successors, (1520), 1270 states have internal predecessors, (1520), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:25:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1700 transitions. [2023-12-24 18:25:36,142 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1700 transitions. Word has length 94 [2023-12-24 18:25:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:25:36,142 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1700 transitions. [2023-12-24 18:25:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:25:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1700 transitions. [2023-12-24 18:25:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-24 18:25:36,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:25:36,143 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:36,151 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 (34)] Forceful destruction successful, exit code 0 [2023-12-24 18:25:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:25:36,349 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:25:36,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:25:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1136572526, now seen corresponding path program 1 times [2023-12-24 18:25:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:25:36,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556783791] [2023-12-24 18:25:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:25:36,350 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 18:25:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:25:36,351 INFO L229 MonitoredProcess]: Starting monitored process 35 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 18:25:36,352 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 (35)] Waiting until timeout for monitored process [2023-12-24 18:25:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:25:36,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 18:25:36,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:25:36,641 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 18:25:36,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:36,683 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 18:25:36,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:36,769 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 59 treesize of output 43 [2023-12-24 18:25:36,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:36,820 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 70 treesize of output 43 [2023-12-24 18:25:36,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:36,867 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 53 [2023-12-24 18:25:41,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:25:41,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 60 treesize of output 24 [2023-12-24 18:25:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 18:25:41,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:25:41,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:25:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556783791] [2023-12-24 18:25:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556783791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:25:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:25:41,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:25:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366095138] [2023-12-24 18:25:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:25:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 18:25:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:25:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 18:25:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2023-12-24 18:25:41,115 INFO L87 Difference]: Start difference. First operand 1411 states and 1700 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:25:45,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:49,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:53,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:25:57,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:01,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:06,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:07,390 INFO L93 Difference]: Finished difference Result 2743 states and 3309 transitions. [2023-12-24 18:26:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 18:26:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2023-12-24 18:26:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:07,395 INFO L225 Difference]: With dead ends: 2743 [2023-12-24 18:26:07,395 INFO L226 Difference]: Without dead ends: 1652 [2023-12-24 18:26:07,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=99, Invalid=320, Unknown=1, NotChecked=0, Total=420 [2023-12-24 18:26:07,396 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 296 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:07,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 498 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 732 Invalid, 6 Unknown, 0 Unchecked, 25.9s Time] [2023-12-24 18:26:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-12-24 18:26:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1430. [2023-12-24 18:26:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1289 states have (on average 1.200155159038014) internal successors, (1547), 1289 states have internal predecessors, (1547), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:26:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1727 transitions. [2023-12-24 18:26:07,489 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1727 transitions. Word has length 94 [2023-12-24 18:26:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:07,489 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1727 transitions. [2023-12-24 18:26:07,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-24 18:26:07,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1727 transitions. [2023-12-24 18:26:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 18:26:07,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:07,490 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:07,501 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 (35)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:07,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:26:07,701 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:07,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 826853354, now seen corresponding path program 1 times [2023-12-24 18:26:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306590454] [2023-12-24 18:26:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:07,702 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 18:26:07,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:07,705 INFO L229 MonitoredProcess]: Starting monitored process 36 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 18:26:07,706 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 (36)] Waiting until timeout for monitored process [2023-12-24 18:26:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:07,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 18:26:07,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:07,986 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 21 treesize of output 21 [2023-12-24 18:26:08,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:08,090 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 48 treesize of output 29 [2023-12-24 18:26:08,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:08,101 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 54 treesize of output 39 [2023-12-24 18:26:12,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:12,292 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 52 treesize of output 22 [2023-12-24 18:26:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:26:12,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:12,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306590454] [2023-12-24 18:26:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306590454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:26:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711386536] [2023-12-24 18:26:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:26:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:26:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2023-12-24 18:26:12,341 INFO L87 Difference]: Start difference. First operand 1430 states and 1727 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:16,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:24,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:28,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:32,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:26:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:33,595 INFO L93 Difference]: Finished difference Result 2758 states and 3335 transitions. [2023-12-24 18:26:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:26:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2023-12-24 18:26:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:33,601 INFO L225 Difference]: With dead ends: 2758 [2023-12-24 18:26:33,601 INFO L226 Difference]: Without dead ends: 1648 [2023-12-24 18:26:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=44, Unknown=2, NotChecked=0, Total=72 [2023-12-24 18:26:33,605 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 175 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 378 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2023-12-24 18:26:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-12-24 18:26:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1434. [2023-12-24 18:26:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1293 states have (on average 1.1995359628770301) internal successors, (1551), 1293 states have internal predecessors, (1551), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:26:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1731 transitions. [2023-12-24 18:26:33,712 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1731 transitions. Word has length 97 [2023-12-24 18:26:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:33,712 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1731 transitions. [2023-12-24 18:26:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1731 transitions. [2023-12-24 18:26:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 18:26:33,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:33,713 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:33,720 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 (36)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:26:33,920 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:33,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1068415939, now seen corresponding path program 1 times [2023-12-24 18:26:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108558222] [2023-12-24 18:26:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:33,921 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 18:26:33,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:33,922 INFO L229 MonitoredProcess]: Starting monitored process 37 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 18:26:33,956 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 (37)] Waiting until timeout for monitored process [2023-12-24 18:26:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:34,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 18:26:34,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:34,152 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 32 treesize of output 14 [2023-12-24 18:26:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:26:34,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:34,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:34,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108558222] [2023-12-24 18:26:34,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108558222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:34,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:34,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:26:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485962961] [2023-12-24 18:26:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:34,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:26:34,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:26:34,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:26:34,170 INFO L87 Difference]: Start difference. First operand 1434 states and 1731 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:34,588 INFO L93 Difference]: Finished difference Result 2596 states and 3155 transitions. [2023-12-24 18:26:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 18:26:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2023-12-24 18:26:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:34,605 INFO L225 Difference]: With dead ends: 2596 [2023-12-24 18:26:34,605 INFO L226 Difference]: Without dead ends: 1482 [2023-12-24 18:26:34,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 18:26:34,606 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 26 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:34,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 273 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 18:26:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-24 18:26:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1434. [2023-12-24 18:26:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1293 states have (on average 1.1964423820572312) internal successors, (1547), 1293 states have internal predecessors, (1547), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-24 18:26:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1727 transitions. [2023-12-24 18:26:34,698 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1727 transitions. Word has length 97 [2023-12-24 18:26:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:34,698 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1727 transitions. [2023-12-24 18:26:34,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1727 transitions. [2023-12-24 18:26:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-24 18:26:34,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:34,699 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:34,713 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 18:26:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:26:34,906 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:34,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 675388929, now seen corresponding path program 1 times [2023-12-24 18:26:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591422174] [2023-12-24 18:26:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:34,907 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 18:26:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:34,908 INFO L229 MonitoredProcess]: Starting monitored process 38 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 18:26:34,910 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 (38)] Waiting until timeout for monitored process [2023-12-24 18:26:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:35,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 18:26:35,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:35,165 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 18:26:35,183 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 22 treesize of output 22 [2023-12-24 18:26:35,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:35,202 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 49 treesize of output 25 [2023-12-24 18:26:35,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:35,280 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 39 treesize of output 15 [2023-12-24 18:26:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:26:35,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:35,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591422174] [2023-12-24 18:26:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591422174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 18:26:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185507591] [2023-12-24 18:26:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:35,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:26:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:26:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:26:35,408 INFO L87 Difference]: Start difference. First operand 1434 states and 1727 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:26:38,566 INFO L93 Difference]: Finished difference Result 2913 states and 3531 transitions. [2023-12-24 18:26:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 18:26:38,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 97 [2023-12-24 18:26:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:26:38,571 INFO L225 Difference]: With dead ends: 2913 [2023-12-24 18:26:38,571 INFO L226 Difference]: Without dead ends: 1799 [2023-12-24 18:26:38,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-12-24 18:26:38,573 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 142 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:26:38,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1377 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 18:26:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-12-24 18:26:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1726. [2023-12-24 18:26:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1529 states have (on average 1.195552648790059) internal successors, (1828), 1529 states have internal predecessors, (1828), 126 states have call successors, (126), 70 states have call predecessors, (126), 70 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-24 18:26:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2080 transitions. [2023-12-24 18:26:38,729 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2080 transitions. Word has length 97 [2023-12-24 18:26:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:26:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2080 transitions. [2023-12-24 18:26:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2080 transitions. [2023-12-24 18:26:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 18:26:38,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:26:38,730 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:38,738 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 (38)] Ended with exit code 0 [2023-12-24 18:26:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:26:38,938 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:26:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:26:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1716026810, now seen corresponding path program 1 times [2023-12-24 18:26:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:26:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178829902] [2023-12-24 18:26:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:26:38,939 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 18:26:38,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:26:38,940 INFO L229 MonitoredProcess]: Starting monitored process 39 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 18:26:38,942 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 (39)] Waiting until timeout for monitored process [2023-12-24 18:26:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:26:39,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 18:26:39,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:26:39,386 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 18:26:39,404 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 21 treesize of output 21 [2023-12-24 18:26:39,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:39,424 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 38 treesize of output 44 [2023-12-24 18:26:43,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:43,515 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 56 treesize of output 68 [2023-12-24 18:26:52,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:26:52,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 76 treesize of output 30 [2023-12-24 18:26:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:26:52,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:26:52,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:26:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178829902] [2023-12-24 18:26:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178829902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:26:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:26:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 18:26:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305112117] [2023-12-24 18:26:52,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:26:52,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 18:26:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:26:52,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 18:26:52,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=148, Unknown=3, NotChecked=0, Total=182 [2023-12-24 18:26:52,228 INFO L87 Difference]: Start difference. First operand 1726 states and 2080 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:26:56,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:00,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:04,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:08,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:12,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:16,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:20,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:24,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:31,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:27:32,531 INFO L93 Difference]: Finished difference Result 3251 states and 3933 transitions. [2023-12-24 18:27:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 18:27:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 99 [2023-12-24 18:27:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:27:32,536 INFO L225 Difference]: With dead ends: 3251 [2023-12-24 18:27:32,536 INFO L226 Difference]: Without dead ends: 1845 [2023-12-24 18:27:32,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=213, Invalid=714, Unknown=3, NotChecked=0, Total=930 [2023-12-24 18:27:32,538 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 305 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 60 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:27:32,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1203 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1011 Invalid, 9 Unknown, 0 Unchecked, 38.9s Time] [2023-12-24 18:27:32,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-12-24 18:27:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1539. [2023-12-24 18:27:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1370 states have (on average 1.1934306569343065) internal successors, (1635), 1370 states have internal predecessors, (1635), 108 states have call successors, (108), 60 states have call predecessors, (108), 60 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-24 18:27:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1851 transitions. [2023-12-24 18:27:32,660 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1851 transitions. Word has length 99 [2023-12-24 18:27:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:27:32,660 INFO L495 AbstractCegarLoop]: Abstraction has 1539 states and 1851 transitions. [2023-12-24 18:27:32,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:27:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1851 transitions. [2023-12-24 18:27:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-24 18:27:32,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:27:32,661 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:32,692 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 18:27:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:27:32,880 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:27:32,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:27:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1867491235, now seen corresponding path program 1 times [2023-12-24 18:27:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:27:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152401549] [2023-12-24 18:27:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:27:32,881 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 18:27:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:27:32,898 INFO L229 MonitoredProcess]: Starting monitored process 40 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 18:27:32,935 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 (40)] Waiting until timeout for monitored process [2023-12-24 18:27:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:27:33,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 18:27:33,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:27:33,290 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 18:27:33,310 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 16 [2023-12-24 18:27:33,316 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 43 treesize of output 16 [2023-12-24 18:27:33,327 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 34 [2023-12-24 18:27:37,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:27:37,497 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 42 treesize of output 20 [2023-12-24 18:27:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-24 18:27:37,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:27:37,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:27:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152401549] [2023-12-24 18:27:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152401549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:27:37,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:27:37,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:27:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935353560] [2023-12-24 18:27:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:27:37,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:27:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:27:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:27:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2023-12-24 18:27:37,524 INFO L87 Difference]: Start difference. First operand 1539 states and 1851 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-24 18:27:40,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:48,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:52,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:27:56,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:00,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:04,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 18:28:08,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 18:28:11,699 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 18:28:11,710 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 (40)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 18:28:12,733 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 (40)] Forceful destruction successful, exit code 0 [2023-12-24 18:28:12,899 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 18:28:12,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=14, Invalid=26, Unknown=2, NotChecked=0, Total=42 [2023-12-24 18:28:12,933 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 39 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:28:12,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 7 Unknown, 0 Unchecked, 27.4s Time] [2023-12-24 18:28:12,934 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 18:28:12,935 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-24 18:28:12,938 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, 1, 1, 1, 1, 1, 1] [2023-12-24 18:28:12,944 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 18:28:12,944 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 18:28:12,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 06:28:12 BoogieIcfgContainer [2023-12-24 18:28:12,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 18:28:12,946 INFO L158 Benchmark]: Toolchain (without parser) took 878358.86ms. Allocated memory was 297.8MB in the beginning and 381.7MB in the end (delta: 83.9MB). Free memory was 244.5MB in the beginning and 307.3MB in the end (delta: -62.8MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.63ms. Allocated memory is still 297.8MB. Free memory was 244.0MB in the beginning and 228.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.39ms. Allocated memory is still 297.8MB. Free memory was 228.2MB in the beginning and 224.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: Boogie Preprocessor took 117.87ms. Allocated memory is still 297.8MB. Free memory was 224.6MB in the beginning and 219.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: RCFGBuilder took 763.70ms. Allocated memory is still 297.8MB. Free memory was 219.9MB in the beginning and 183.2MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-24 18:28:12,946 INFO L158 Benchmark]: TraceAbstraction took 877116.49ms. Allocated memory was 297.8MB in the beginning and 381.7MB in the end (delta: 83.9MB). Free memory was 182.1MB in the beginning and 307.3MB in the end (delta: -125.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:28:12,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.63ms. Allocated memory is still 297.8MB. Free memory was 244.0MB in the beginning and 228.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.39ms. Allocated memory is still 297.8MB. Free memory was 228.2MB in the beginning and 224.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 117.87ms. Allocated memory is still 297.8MB. Free memory was 224.6MB in the beginning and 219.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 763.70ms. Allocated memory is still 297.8MB. Free memory was 219.9MB in the beginning and 183.2MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 877116.49ms. Allocated memory was 297.8MB in the beginning and 381.7MB in the end (delta: 83.9MB). Free memory was 182.1MB in the beginning and 307.3MB in the end (delta: -125.2MB). There was no memory consumed. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 877.1s, OverallIterations: 37, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 743.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 mSolverCounterUnknown, 9438 SdHoareTripleChecker+Valid, 694.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9384 mSDsluCounter, 19340 SdHoareTripleChecker+Invalid, 688.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15362 mSDsCounter, 733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19150 IncrementalHoareTripleChecker+Invalid, 20045 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 733 mSolverCounterUnsat, 3978 mSDtfsCounter, 19150 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4205 GetRequests, 3621 SyntacticMatches, 5 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4936 ImplicationChecksByTransitivity, 126.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1726occurred in iteration=35, InterpolantAutomatonStates: 448, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 36 MinimizatonAttempts, 4639 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 111.3s InterpolantComputationTime, 3380 NumberOfCodeBlocks, 3380 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3850 ConstructedInterpolants, 812 QuantifiedInterpolants, 116746 SizeOfPredicates, 285 NumberOfNonLiveVariables, 7627 ConjunctsInSsa, 616 ConjunctsInUnsatCore, 45 InterpolantComputations, 33 PerfectInterpolantSequences, 6204/6480 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