/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-43.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 18:10:47,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 18:10:47,141 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 18:10:47,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 18:10:47,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 18:10:47,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 18:10:47,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 18:10:47,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 18:10:47,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 18:10:47,165 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 18:10:47,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 18:10:47,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 18:10:47,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 18:10:47,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 18:10:47,166 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 18:10:47,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 18:10:47,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 18:10:47,166 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 18:10:47,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 18:10:47,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 18:10:47,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 18:10:47,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 18:10:47,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 18:10:47,171 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 18:10:47,171 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 18:10:47,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 18:10:47,171 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 18:10:47,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 18:10:47,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 18:10:47,172 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 18:10:47,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 18:10:47,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 18:10:47,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 18:10:47,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 18:10:47,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:10:47,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 18:10:47,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 18:10:47,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 18:10:47,174 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 18:10:47,174 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 18:10:47,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 18:10:47,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 18:10:47,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 18:10:47,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 18:10:47,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 18:10:47,178 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 18:10:47,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 18:10:47,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 18:10:47,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 18:10:47,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 18:10:47,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 18:10:47,429 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 18:10:47,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2023-12-24 18:10:48,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 18:10:48,854 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 18:10:48,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-43.i [2023-12-24 18:10:48,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601617bcc/0f7d7c23fb044f87b71cc20d08230e0a/FLAG40413169d [2023-12-24 18:10:48,880 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601617bcc/0f7d7c23fb044f87b71cc20d08230e0a [2023-12-24 18:10:48,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 18:10:48,883 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 18:10:48,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 18:10:48,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 18:10:48,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 18:10:48,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:10:48" (1/1) ... [2023-12-24 18:10:48,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4b6ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:48, skipping insertion in model container [2023-12-24 18:10:48,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 06:10:48" (1/1) ... [2023-12-24 18:10:48,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 18:10:49,045 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-43.i[916,929] [2023-12-24 18:10:49,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:10:49,105 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 18:10:49,114 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-43.i[916,929] [2023-12-24 18:10:49,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 18:10:49,201 INFO L206 MainTranslator]: Completed translation [2023-12-24 18:10:49,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49 WrapperNode [2023-12-24 18:10:49,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 18:10:49,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 18:10:49,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 18:10:49,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 18:10:49,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,260 INFO L138 Inliner]: procedures = 33, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 499 [2023-12-24 18:10:49,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 18:10:49,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 18:10:49,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 18:10:49,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 18:10:49,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,312 INFO L175 MemorySlicer]: Split 144 memory accesses to 2 slices as follows [2, 142]. 99 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [2, 18]. The 21 writes are split as follows [0, 21]. [2023-12-24 18:10:49,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 18:10:49,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 18:10:49,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 18:10:49,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 18:10:49,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (1/1) ... [2023-12-24 18:10:49,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 18:10:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 18:10:49,442 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 18:10:49,460 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 18:10:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 18:10:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 18:10:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 18:10:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 18:10:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 18:10:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 18:10:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 18:10:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 18:10:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 18:10:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 18:10:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 18:10:49,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 18:10:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 18:10:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 18:10:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 18:10:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 18:10:49,585 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 18:10:49,586 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 18:10:50,429 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 18:10:50,457 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 18:10:50,457 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 18:10:50,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:10:50 BoogieIcfgContainer [2023-12-24 18:10:50,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 18:10:50,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 18:10:50,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 18:10:50,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 18:10:50,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 06:10:48" (1/3) ... [2023-12-24 18:10:50,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479fedb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:10:50, skipping insertion in model container [2023-12-24 18:10:50,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 06:10:49" (2/3) ... [2023-12-24 18:10:50,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479fedb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 06:10:50, skipping insertion in model container [2023-12-24 18:10:50,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 06:10:50" (3/3) ... [2023-12-24 18:10:50,468 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-43.i [2023-12-24 18:10:50,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 18:10:50,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 18:10:50,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 18:10:50,519 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;@76f7e254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 18:10:50,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 18:10:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 18:10:50,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:50,534 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:50,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:50,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -921054012, now seen corresponding path program 1 times [2023-12-24 18:10:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711048093] [2023-12-24 18:10:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:50,552 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 18:10:50,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:50,558 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 18:10:50,564 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 18:10:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:50,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 18:10:50,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-24 18:10:51,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:51,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711048093] [2023-12-24 18:10:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711048093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 18:10:51,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610892369] [2023-12-24 18:10:51,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 18:10:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 18:10:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 18:10:51,068 INFO L87 Difference]: Start difference. First operand has 105 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 83 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:51,189 INFO L93 Difference]: Finished difference Result 207 states and 334 transitions. [2023-12-24 18:10:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 18:10:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-24 18:10:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:51,198 INFO L225 Difference]: With dead ends: 207 [2023-12-24 18:10:51,198 INFO L226 Difference]: Without dead ends: 103 [2023-12-24 18:10:51,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 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 18:10:51,204 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:51,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:10:51,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-24 18:10:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-24 18:10:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 81 states have internal predecessors, (113), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2023-12-24 18:10:51,272 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 159 [2023-12-24 18:10:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:51,272 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2023-12-24 18:10:51,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2023-12-24 18:10:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 18:10:51,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:51,283 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:51,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 18:10:51,491 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 18:10:51,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:51,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1263134052, now seen corresponding path program 1 times [2023-12-24 18:10:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:51,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844286106] [2023-12-24 18:10:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:51,493 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 18:10:51,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:51,494 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 18:10:51,496 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 18:10:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:51,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:10:51,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:10:51,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:51,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844286106] [2023-12-24 18:10:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844286106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:10:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645986000] [2023-12-24 18:10:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:10:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:10:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:10:52,002 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:10:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:52,151 INFO L93 Difference]: Finished difference Result 226 states and 335 transitions. [2023-12-24 18:10:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:10:52,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 18:10:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:52,156 INFO L225 Difference]: With dead ends: 226 [2023-12-24 18:10:52,156 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 18:10:52,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 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 18:10:52,158 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 46 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:52,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 573 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:10:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 18:10:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2023-12-24 18:10:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 85 states have internal predecessors, (117), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 157 transitions. [2023-12-24 18:10:52,172 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 157 transitions. Word has length 159 [2023-12-24 18:10:52,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:52,175 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 157 transitions. [2023-12-24 18:10:52,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:10:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 157 transitions. [2023-12-24 18:10:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 18:10:52,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:52,179 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:52,193 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 (3)] Forceful destruction successful, exit code 0 [2023-12-24 18:10:52,390 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 18:10:52,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:52,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 453787426, now seen corresponding path program 1 times [2023-12-24 18:10:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123833190] [2023-12-24 18:10:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:52,394 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 18:10:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:52,399 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 18:10:52,400 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 18:10:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:52,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:10:52,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:10:52,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:52,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123833190] [2023-12-24 18:10:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123833190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:10:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388609331] [2023-12-24 18:10:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:52,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:10:52,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:10:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:10:52,790 INFO L87 Difference]: Start difference. First operand 107 states and 157 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:10:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:52,964 INFO L93 Difference]: Finished difference Result 233 states and 340 transitions. [2023-12-24 18:10:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 18:10:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2023-12-24 18:10:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:52,970 INFO L225 Difference]: With dead ends: 233 [2023-12-24 18:10:52,970 INFO L226 Difference]: Without dead ends: 127 [2023-12-24 18:10:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:10:52,972 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 49 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 710 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:10:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-24 18:10:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2023-12-24 18:10:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.367816091954023) internal successors, (119), 87 states have internal predecessors, (119), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2023-12-24 18:10:52,980 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 159 [2023-12-24 18:10:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:52,981 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2023-12-24 18:10:52,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:10:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2023-12-24 18:10:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-24 18:10:52,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:52,983 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:53,004 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 18:10:53,197 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 18:10:53,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:53,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash 511045728, now seen corresponding path program 1 times [2023-12-24 18:10:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077350510] [2023-12-24 18:10:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:53,200 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 18:10:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:53,217 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 18:10:53,280 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 18:10:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:53,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:10:53,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:53,768 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 95 treesize of output 41 [2023-12-24 18:10:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-24 18:10:53,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:53,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:53,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077350510] [2023-12-24 18:10:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077350510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:53,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:53,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:10:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259017229] [2023-12-24 18:10:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:10:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:10:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:10:53,825 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:55,022 INFO L93 Difference]: Finished difference Result 223 states and 326 transitions. [2023-12-24 18:10:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:10:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-24 18:10:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:55,024 INFO L225 Difference]: With dead ends: 223 [2023-12-24 18:10:55,024 INFO L226 Difference]: Without dead ends: 115 [2023-12-24 18:10:55,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:10:55,030 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 147 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:55,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 425 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 18:10:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-24 18:10:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2023-12-24 18:10:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 158 transitions. [2023-12-24 18:10:55,041 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 158 transitions. Word has length 159 [2023-12-24 18:10:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:55,042 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 158 transitions. [2023-12-24 18:10:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 158 transitions. [2023-12-24 18:10:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-24 18:10:55,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:55,044 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:55,058 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 18:10:55,245 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 18:10:55,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:55,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2027079834, now seen corresponding path program 1 times [2023-12-24 18:10:55,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:55,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16001861] [2023-12-24 18:10:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:55,247 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 18:10:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:55,250 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 18:10:55,282 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 18:10:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:55,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 18:10:55,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:55,710 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 95 treesize of output 41 [2023-12-24 18:10:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-24 18:10:55,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:55,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16001861] [2023-12-24 18:10:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16001861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:10:55,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452962168] [2023-12-24 18:10:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:10:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:10:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:10:55,734 INFO L87 Difference]: Start difference. First operand 109 states and 158 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:56,823 INFO L93 Difference]: Finished difference Result 223 states and 324 transitions. [2023-12-24 18:10:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:10:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2023-12-24 18:10:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:56,825 INFO L225 Difference]: With dead ends: 223 [2023-12-24 18:10:56,825 INFO L226 Difference]: Without dead ends: 115 [2023-12-24 18:10:56,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:10:56,826 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 139 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:56,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 420 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 18:10:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-24 18:10:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2023-12-24 18:10:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2023-12-24 18:10:56,834 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 161 [2023-12-24 18:10:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:56,835 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2023-12-24 18:10:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2023-12-24 18:10:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:10:56,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:56,837 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:56,862 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 18:10:57,048 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 18:10:57,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:57,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash -352194912, now seen corresponding path program 1 times [2023-12-24 18:10:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:57,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232049021] [2023-12-24 18:10:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:57,050 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 18:10:57,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:57,052 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 18:10:57,054 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 18:10:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:10:57,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:10:57,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:10:57,778 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 44 treesize of output 26 [2023-12-24 18:10:57,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:10:57,832 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 18:10:57,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:10:57,869 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 18:10:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 18:10:57,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:10:57,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:10:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232049021] [2023-12-24 18:10:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232049021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:10:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:10:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:10:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131165469] [2023-12-24 18:10:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:10:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:10:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:10:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:10:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:10:57,913 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:10:59,512 INFO L93 Difference]: Finished difference Result 225 states and 320 transitions. [2023-12-24 18:10:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 18:10:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2023-12-24 18:10:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:10:59,515 INFO L225 Difference]: With dead ends: 225 [2023-12-24 18:10:59,515 INFO L226 Difference]: Without dead ends: 117 [2023-12-24 18:10:59,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-24 18:10:59,517 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 195 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:10:59,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 273 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 18:10:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-24 18:10:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2023-12-24 18:10:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:10:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 159 transitions. [2023-12-24 18:10:59,530 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 159 transitions. Word has length 163 [2023-12-24 18:10:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:10:59,531 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 159 transitions. [2023-12-24 18:10:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:10:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 159 transitions. [2023-12-24 18:10:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:10:59,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:10:59,533 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:59,567 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 18:10:59,739 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 18:10:59,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:10:59,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:10:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2041138654, now seen corresponding path program 1 times [2023-12-24 18:10:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:10:59,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672931036] [2023-12-24 18:10:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:10:59,741 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 18:10:59,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:10:59,742 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 18:10:59,743 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 18:11:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:00,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 18:11:00,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:00,469 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 44 treesize of output 26 [2023-12-24 18:11:00,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:00,526 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 18:11:00,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:00,556 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 49 treesize of output 48 [2023-12-24 18:11:00,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:00,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 51 [2023-12-24 18:11:00,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:00,636 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 55 treesize of output 21 [2023-12-24 18:11:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 18:11:00,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:00,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:00,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672931036] [2023-12-24 18:11:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672931036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:00,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:00,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:11:00,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026024668] [2023-12-24 18:11:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:00,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:11:00,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:00,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:11:00,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:11:00,663 INFO L87 Difference]: Start difference. First operand 113 states and 159 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:03,297 INFO L93 Difference]: Finished difference Result 372 states and 519 transitions. [2023-12-24 18:11:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 18:11:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2023-12-24 18:11:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:03,303 INFO L225 Difference]: With dead ends: 372 [2023-12-24 18:11:03,303 INFO L226 Difference]: Without dead ends: 260 [2023-12-24 18:11:03,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:11:03,304 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 305 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:03,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 453 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 18:11:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-24 18:11:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 113. [2023-12-24 18:11:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 90 states have internal predecessors, (118), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 18:11:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2023-12-24 18:11:03,333 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 163 [2023-12-24 18:11:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:03,333 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2023-12-24 18:11:03,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2023-12-24 18:11:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:03,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:03,334 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:03,349 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 18:11:03,547 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 18:11:03,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:03,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 973964964, now seen corresponding path program 1 times [2023-12-24 18:11:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586622931] [2023-12-24 18:11:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:03,548 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 18:11:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:03,549 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 18:11:03,551 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 18:11:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:04,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 18:11:04,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:04,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:11:04,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:11:04,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:11:04,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:11:04,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 18:11:04,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:04,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:11:04,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:04,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:11:04,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:04,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:11:05,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:05,077 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 60 treesize of output 53 [2023-12-24 18:11:05,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:05,252 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 60 treesize of output 53 [2023-12-24 18:11:05,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:05,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-12-24 18:11:05,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:05,717 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 70 treesize of output 66 [2023-12-24 18:11:05,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:05,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 86 [2023-12-24 18:11:06,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:06,105 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 87 treesize of output 89 [2023-12-24 18:11:06,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:06,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 99 [2023-12-24 18:11:06,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:06,290 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 98 treesize of output 103 [2023-12-24 18:11:06,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:06,411 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 125 treesize of output 59 [2023-12-24 18:11:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-24 18:11:06,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:06,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586622931] [2023-12-24 18:11:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586622931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:06,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 18:11:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759738640] [2023-12-24 18:11:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:11:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:11:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:11:06,527 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-24 18:11:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:10,322 INFO L93 Difference]: Finished difference Result 453 states and 634 transitions. [2023-12-24 18:11:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 18:11:10,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 163 [2023-12-24 18:11:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:10,329 INFO L225 Difference]: With dead ends: 453 [2023-12-24 18:11:10,330 INFO L226 Difference]: Without dead ends: 341 [2023-12-24 18:11:10,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2023-12-24 18:11:10,331 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 846 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:10,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 715 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-24 18:11:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-12-24 18:11:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 229. [2023-12-24 18:11:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 184 states have (on average 1.309782608695652) internal successors, (241), 184 states have internal predecessors, (241), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 18:11:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 321 transitions. [2023-12-24 18:11:10,365 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 321 transitions. Word has length 163 [2023-12-24 18:11:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:10,366 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 321 transitions. [2023-12-24 18:11:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-24 18:11:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 321 transitions. [2023-12-24 18:11:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:10,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:10,368 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:10,387 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 18:11:10,585 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 18:11:10,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:10,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2125664875, now seen corresponding path program 1 times [2023-12-24 18:11:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484839090] [2023-12-24 18:11:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:10,587 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 18:11:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:10,588 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 18:11:10,590 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 18:11:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:11,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 18:11:11,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:11,235 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 44 treesize of output 26 [2023-12-24 18:11:11,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:11,283 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 18:11:11,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:11,309 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 49 treesize of output 48 [2023-12-24 18:11:11,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:11,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 51 [2023-12-24 18:11:11,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:11,376 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 55 treesize of output 21 [2023-12-24 18:11:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 18:11:11,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:11,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484839090] [2023-12-24 18:11:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484839090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:11:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106169123] [2023-12-24 18:11:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:11:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:11:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:11:11,405 INFO L87 Difference]: Start difference. First operand 229 states and 321 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:14,232 INFO L93 Difference]: Finished difference Result 740 states and 1030 transitions. [2023-12-24 18:11:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 18:11:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2023-12-24 18:11:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:14,235 INFO L225 Difference]: With dead ends: 740 [2023-12-24 18:11:14,235 INFO L226 Difference]: Without dead ends: 512 [2023-12-24 18:11:14,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-12-24 18:11:14,239 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 418 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:14,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 492 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-24 18:11:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-12-24 18:11:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 229. [2023-12-24 18:11:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 184 states have (on average 1.298913043478261) internal successors, (239), 184 states have internal predecessors, (239), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 18:11:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2023-12-24 18:11:14,270 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 163 [2023-12-24 18:11:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:14,271 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2023-12-24 18:11:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2023-12-24 18:11:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:14,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:14,272 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:14,291 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 18:11:14,472 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 18:11:14,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:14,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash 845801197, now seen corresponding path program 1 times [2023-12-24 18:11:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229531400] [2023-12-24 18:11:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:14,474 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 18:11:14,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:14,475 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 18:11:14,476 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 18:11:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:14,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:11:14,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:11:14,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:14,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:14,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229531400] [2023-12-24 18:11:14,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229531400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:11:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099417479] [2023-12-24 18:11:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:11:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:11:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:11:14,854 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:11:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:14,975 INFO L93 Difference]: Finished difference Result 499 states and 695 transitions. [2023-12-24 18:11:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:11:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 18:11:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:14,977 INFO L225 Difference]: With dead ends: 499 [2023-12-24 18:11:14,977 INFO L226 Difference]: Without dead ends: 271 [2023-12-24 18:11:14,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 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 18:11:14,979 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 52 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:14,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 590 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:11:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-24 18:11:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2023-12-24 18:11:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 186 states have (on average 1.2956989247311828) internal successors, (241), 186 states have internal predecessors, (241), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 18:11:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 321 transitions. [2023-12-24 18:11:15,003 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 321 transitions. Word has length 163 [2023-12-24 18:11:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:15,004 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 321 transitions. [2023-12-24 18:11:15,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:11:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 321 transitions. [2023-12-24 18:11:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:15,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:15,005 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:15,039 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 18:11:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:11:15,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -195624414, now seen corresponding path program 1 times [2023-12-24 18:11:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962426258] [2023-12-24 18:11:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:15,221 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 18:11:15,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:15,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 18:11:15,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 18:11:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:15,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 18:11:15,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:15,924 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 44 treesize of output 26 [2023-12-24 18:11:15,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:15,987 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 18:11:16,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:16,013 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 18:11:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 18:11:16,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:16,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:16,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962426258] [2023-12-24 18:11:16,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962426258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:16,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:16,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:11:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911246806] [2023-12-24 18:11:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:16,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 18:11:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 18:11:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 18:11:16,060 INFO L87 Difference]: Start difference. First operand 231 states and 321 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:17,734 INFO L93 Difference]: Finished difference Result 469 states and 649 transitions. [2023-12-24 18:11:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 18:11:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2023-12-24 18:11:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:17,737 INFO L225 Difference]: With dead ends: 469 [2023-12-24 18:11:17,737 INFO L226 Difference]: Without dead ends: 239 [2023-12-24 18:11:17,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-24 18:11:17,738 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 108 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:17,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 270 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 18:11:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-24 18:11:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2023-12-24 18:11:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 186 states have internal predecessors, (239), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 18:11:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 319 transitions. [2023-12-24 18:11:17,781 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 319 transitions. Word has length 163 [2023-12-24 18:11:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:17,782 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 319 transitions. [2023-12-24 18:11:17,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:11:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 319 transitions. [2023-12-24 18:11:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:17,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:17,783 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:17,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 18:11:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:11:17,995 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:17,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1884568156, now seen corresponding path program 1 times [2023-12-24 18:11:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470016800] [2023-12-24 18:11:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:17,996 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 18:11:17,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:17,997 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 18:11:17,999 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 18:11:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:11:18,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 18:11:18,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:11:18,713 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 18:11:18,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 18:11:19,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:19,397 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 140 treesize of output 67 [2023-12-24 18:11:19,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:19,631 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 140 treesize of output 67 [2023-12-24 18:11:19,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:19,875 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 135 treesize of output 77 [2023-12-24 18:11:20,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:20,259 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 145 treesize of output 90 [2023-12-24 18:11:20,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:20,831 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 155 treesize of output 103 [2023-12-24 18:11:21,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:21,355 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 165 treesize of output 116 [2023-12-24 18:11:22,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:22,106 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 180 treesize of output 119 [2023-12-24 18:11:22,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:22,716 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 175 treesize of output 129 [2023-12-24 18:11:23,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:23,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 190 treesize of output 132 [2023-12-24 18:11:24,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:24,200 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 132 [2023-12-24 18:11:24,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:24,843 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 203 treesize of output 152 [2023-12-24 18:11:25,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:25,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 207 treesize of output 155 [2023-12-24 18:11:26,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 259 treesize of output 171 [2023-12-24 18:11:26,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:11:26,983 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 324 treesize of output 120 [2023-12-24 18:11:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-24 18:11:28,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:11:28,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:11:28,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470016800] [2023-12-24 18:11:28,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470016800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:11:28,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:11:28,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-24 18:11:28,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757273125] [2023-12-24 18:11:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:11:28,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 18:11:28,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:11:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 18:11:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:11:28,409 INFO L87 Difference]: Start difference. First operand 231 states and 319 transitions. Second operand has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 21 states have internal predecessors, (84), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-24 18:11:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:11:41,119 INFO L93 Difference]: Finished difference Result 1075 states and 1448 transitions. [2023-12-24 18:11:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 18:11:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 21 states have internal predecessors, (84), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 163 [2023-12-24 18:11:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:11:41,124 INFO L225 Difference]: With dead ends: 1075 [2023-12-24 18:11:41,124 INFO L226 Difference]: Without dead ends: 845 [2023-12-24 18:11:41,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-12-24 18:11:41,126 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 437 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:11:41,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1072 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-24 18:11:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-24 18:11:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 520. [2023-12-24 18:11:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 385 states have (on average 1.2337662337662338) internal successors, (475), 387 states have internal predecessors, (475), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:11:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 703 transitions. [2023-12-24 18:11:41,201 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 703 transitions. Word has length 163 [2023-12-24 18:11:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:11:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 703 transitions. [2023-12-24 18:11:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 21 states have internal predecessors, (84), 7 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-24 18:11:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 703 transitions. [2023-12-24 18:11:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:11:41,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:11:41,203 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:41,232 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 18:11:41,435 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 18:11:41,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:11:41,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:11:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash 822051238, now seen corresponding path program 1 times [2023-12-24 18:11:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:11:41,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764707304] [2023-12-24 18:11:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:11:41,437 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 18:11:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:11:41,439 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 18:11:41,440 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 18:12:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:12:05,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-24 18:12:05,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:12:05,506 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 18:12:05,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 18:12:06,223 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 0 case distinctions, treesize of input 140 treesize of output 67 [2023-12-24 18:12:08,053 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 0 case distinctions, treesize of input 198 treesize of output 98 [2023-12-24 18:12:11,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:11,328 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 251 treesize of output 139 [2023-12-24 18:12:12,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:12,608 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 266 treesize of output 142 [2023-12-24 18:12:13,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:13,535 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 266 treesize of output 142 [2023-12-24 18:12:14,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:14,459 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 266 treesize of output 142 [2023-12-24 18:12:15,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:15,326 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 266 treesize of output 142 [2023-12-24 18:12:16,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:16,227 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 261 treesize of output 152 [2023-12-24 18:12:17,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:17,547 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 276 treesize of output 155 [2023-12-24 18:12:18,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:18,566 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 271 treesize of output 165 [2023-12-24 18:12:20,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:20,236 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 299 treesize of output 179 [2023-12-24 18:12:21,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:12:21,018 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 298 treesize of output 183 [2023-12-24 18:12:33,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 173 [2023-12-24 18:12:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 456 proven. 96 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 18:12:43,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:13:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:13:08,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:13:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764707304] [2023-12-24 18:13:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764707304] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:13:08,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:13:08,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [35] total 40 [2023-12-24 18:13:08,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270884288] [2023-12-24 18:13:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:13:08,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:13:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:13:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:13:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1275, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 18:13:08,516 INFO L87 Difference]: Start difference. First operand 520 states and 703 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:13:34,039 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 [] [2023-12-24 18:13:38,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:13:43,100 WARN L539 Checker$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 [] [2023-12-24 18:13:47,144 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 [] [2023-12-24 18:14:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:14:19,946 INFO L93 Difference]: Finished difference Result 1195 states and 1614 transitions. [2023-12-24 18:14:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:14:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 18:14:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:14:19,962 INFO L225 Difference]: With dead ends: 1195 [2023-12-24 18:14:19,963 INFO L226 Difference]: Without dead ends: 676 [2023-12-24 18:14:19,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=289, Invalid=1351, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 18:14:19,965 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 84 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:14:19,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 462 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 4 Unknown, 0 Unchecked, 68.5s Time] [2023-12-24 18:14:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-24 18:14:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 528. [2023-12-24 18:14:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 393 states have (on average 1.2391857506361323) internal successors, (487), 395 states have internal predecessors, (487), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:14:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 715 transitions. [2023-12-24 18:14:20,034 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 715 transitions. Word has length 163 [2023-12-24 18:14:20,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:14:20,034 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 715 transitions. [2023-12-24 18:14:20,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:14:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 715 transitions. [2023-12-24 18:14:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:14:20,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:14:20,036 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:20,058 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 18:14:20,253 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 18:14:20,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:14:20,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:14:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1461866330, now seen corresponding path program 1 times [2023-12-24 18:14:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:14:20,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722107675] [2023-12-24 18:14:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:14:20,255 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 18:14:20,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:14:20,265 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 18:14:20,292 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 18:14:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:14:53,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-24 18:14:53,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:14:53,118 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 18:14:53,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 18:14:54,984 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 0 case distinctions, treesize of input 138 treesize of output 65 [2023-12-24 18:14:58,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:58,257 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 191 treesize of output 106 [2023-12-24 18:14:59,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:14:59,558 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 206 treesize of output 109 [2023-12-24 18:15:00,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:00,423 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 201 treesize of output 119 [2023-12-24 18:15:01,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:01,563 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 216 treesize of output 122 [2023-12-24 18:15:02,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:02,414 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 211 treesize of output 132 [2023-12-24 18:15:03,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:03,881 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 221 treesize of output 145 [2023-12-24 18:15:05,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:05,497 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 236 treesize of output 148 [2023-12-24 18:15:06,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:06,663 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 231 treesize of output 158 [2023-12-24 18:15:08,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:08,428 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 259 treesize of output 172 [2023-12-24 18:15:09,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:09,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 263 treesize of output 175 [2023-12-24 18:15:20,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 200 [2023-12-24 18:15:20,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:15:20,461 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 399 treesize of output 147 [2023-12-24 18:15:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 584 proven. 96 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-24 18:15:23,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:15:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:15:38,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:15:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722107675] [2023-12-24 18:15:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722107675] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:15:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:15:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [33] total 37 [2023-12-24 18:15:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633982276] [2023-12-24 18:15:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:15:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:15:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:15:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:15:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 18:15:38,522 INFO L87 Difference]: Start difference. First operand 528 states and 715 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:16:00,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:16:04,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:16:09,255 WARN L539 Checker$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 [] [2023-12-24 18:16:13,262 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 [] [2023-12-24 18:16:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:16:26,533 INFO L93 Difference]: Finished difference Result 1124 states and 1518 transitions. [2023-12-24 18:16:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:16:26,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 18:16:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:16:26,552 INFO L225 Difference]: With dead ends: 1124 [2023-12-24 18:16:26,552 INFO L226 Difference]: Without dead ends: 597 [2023-12-24 18:16:26,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 18:16:26,554 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 32 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:16:26,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 475 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 4 Unknown, 0 Unchecked, 47.9s Time] [2023-12-24 18:16:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-24 18:16:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 530. [2023-12-24 18:16:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.2354430379746835) internal successors, (488), 397 states have internal predecessors, (488), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:16:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 716 transitions. [2023-12-24 18:16:26,604 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 716 transitions. Word has length 163 [2023-12-24 18:16:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:16:26,604 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 716 transitions. [2023-12-24 18:16:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:16:26,604 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 716 transitions. [2023-12-24 18:16:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:16:26,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:16:26,605 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:26,625 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 18:16:26,818 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 18:16:26,819 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:16:26,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:16:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1244753064, now seen corresponding path program 1 times [2023-12-24 18:16:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:16:26,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160719340] [2023-12-24 18:16:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:16:26,820 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 18:16:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:16:26,821 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 18:16:26,822 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 18:16:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:16:36,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-24 18:16:36,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:16:36,981 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 18:16:37,312 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 80 treesize of output 34 [2023-12-24 18:16:37,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 18:16:38,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:38,794 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 138 treesize of output 65 [2023-12-24 18:16:40,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:40,790 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 196 treesize of output 96 [2023-12-24 18:16:41,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:41,382 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 196 treesize of output 96 [2023-12-24 18:16:42,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:42,002 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 191 treesize of output 106 [2023-12-24 18:16:43,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:43,013 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 201 treesize of output 119 [2023-12-24 18:16:44,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:44,116 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 216 treesize of output 122 [2023-12-24 18:16:44,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:44,944 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 211 treesize of output 132 [2023-12-24 18:16:46,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:46,258 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 226 treesize of output 135 [2023-12-24 18:16:47,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:47,176 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 221 treesize of output 145 [2023-12-24 18:16:48,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:48,626 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 249 treesize of output 159 [2023-12-24 18:16:49,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:16:49,379 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 253 treesize of output 162 [2023-12-24 18:17:01,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 187 [2023-12-24 18:17:09,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:17:09,042 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 389 treesize of output 143 [2023-12-24 18:17:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 580 proven. 96 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-24 18:17:11,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:17:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:17:25,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:17:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160719340] [2023-12-24 18:17:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160719340] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:17:25,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:17:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [32] total 38 [2023-12-24 18:17:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644675875] [2023-12-24 18:17:25,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:17:25,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:17:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:17:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:17:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 18:17:25,892 INFO L87 Difference]: Start difference. First operand 530 states and 716 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:17:51,409 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 [] [2023-12-24 18:17:55,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 18:17:59,425 WARN L539 Checker$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 [] [2023-12-24 18:18:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:18:12,818 INFO L93 Difference]: Finished difference Result 1148 states and 1550 transitions. [2023-12-24 18:18:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:18:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 18:18:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:18:12,829 INFO L225 Difference]: With dead ends: 1148 [2023-12-24 18:18:12,829 INFO L226 Difference]: Without dead ends: 619 [2023-12-24 18:18:12,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 18:18:12,831 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 54 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:18:12,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 764 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 357 Invalid, 3 Unknown, 0 Unchecked, 44.6s Time] [2023-12-24 18:18:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-12-24 18:18:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 530. [2023-12-24 18:18:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.2354430379746835) internal successors, (488), 397 states have internal predecessors, (488), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:18:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 716 transitions. [2023-12-24 18:18:12,883 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 716 transitions. Word has length 163 [2023-12-24 18:18:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:18:12,883 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 716 transitions. [2023-12-24 18:18:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 716 transitions. [2023-12-24 18:18:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:18:12,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:18:12,885 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:12,901 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 18:18:13,100 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 18:18:13,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:18:13,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:18:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash 9765730, now seen corresponding path program 1 times [2023-12-24 18:18:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:18:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732518241] [2023-12-24 18:18:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:13,102 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 18:18:13,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:18:13,103 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 18:18:13,107 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 18:18:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:13,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:18:13,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 18:18:13,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:18:13,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:18:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732518241] [2023-12-24 18:18:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732518241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:18:13,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:18:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:18:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971292587] [2023-12-24 18:18:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:18:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:18:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:18:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:18:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:18:13,453 INFO L87 Difference]: Start difference. First operand 530 states and 716 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:18:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:18:13,606 INFO L93 Difference]: Finished difference Result 1079 states and 1461 transitions. [2023-12-24 18:18:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:18:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 163 [2023-12-24 18:18:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:18:13,609 INFO L225 Difference]: With dead ends: 1079 [2023-12-24 18:18:13,609 INFO L226 Difference]: Without dead ends: 550 [2023-12-24 18:18:13,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 18:18:13,611 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:18:13,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 423 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:18:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-24 18:18:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 534. [2023-12-24 18:18:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.2280701754385965) internal successors, (490), 401 states have internal predecessors, (490), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:18:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 718 transitions. [2023-12-24 18:18:13,658 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 718 transitions. Word has length 163 [2023-12-24 18:18:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:18:13,658 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 718 transitions. [2023-12-24 18:18:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:18:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 718 transitions. [2023-12-24 18:18:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-24 18:18:13,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:18:13,660 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:13,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 18:18:13,870 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 18:18:13,871 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:18:13,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:18:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -480698970, now seen corresponding path program 1 times [2023-12-24 18:18:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:18:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342256465] [2023-12-24 18:18:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:13,872 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 18:18:13,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:18:13,873 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 18:18:13,876 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 18:18:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:14,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 18:18:14,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:18:14,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:18:14,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:18:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342256465] [2023-12-24 18:18:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342256465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:18:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:18:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 18:18:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242317524] [2023-12-24 18:18:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:18:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 18:18:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:18:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 18:18:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 18:18:14,210 INFO L87 Difference]: Start difference. First operand 534 states and 718 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:18:14,426 INFO L93 Difference]: Finished difference Result 1075 states and 1447 transitions. [2023-12-24 18:18:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:18:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 163 [2023-12-24 18:18:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:18:14,430 INFO L225 Difference]: With dead ends: 1075 [2023-12-24 18:18:14,430 INFO L226 Difference]: Without dead ends: 542 [2023-12-24 18:18:14,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 18:18:14,440 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:18:14,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 424 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:18:14,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-24 18:18:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 534. [2023-12-24 18:18:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.2230576441102756) internal successors, (488), 401 states have internal predecessors, (488), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-24 18:18:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 716 transitions. [2023-12-24 18:18:14,535 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 716 transitions. Word has length 163 [2023-12-24 18:18:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:18:14,535 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 716 transitions. [2023-12-24 18:18:14,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 716 transitions. [2023-12-24 18:18:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 18:18:14,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:18:14,536 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:14,567 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 18:18:14,737 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 18:18:14,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:18:14,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:18:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1696704437, now seen corresponding path program 1 times [2023-12-24 18:18:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:18:14,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316515681] [2023-12-24 18:18:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:14,738 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 18:18:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:18:14,740 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 18:18:14,741 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 18:18:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:15,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 18:18:15,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:15,430 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 18:18:15,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:15,451 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 37 treesize of output 24 [2023-12-24 18:18:15,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:15,472 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 34 [2023-12-24 18:18:15,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:15,498 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 55 treesize of output 39 [2023-12-24 18:18:15,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:15,530 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 82 treesize of output 40 [2023-12-24 18:18:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:18:15,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:18:15,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:18:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316515681] [2023-12-24 18:18:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316515681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:18:15,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:18:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:18:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093343153] [2023-12-24 18:18:15,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:18:15,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:18:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:18:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:18:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:18:15,571 INFO L87 Difference]: Start difference. First operand 534 states and 716 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:18:18,692 INFO L93 Difference]: Finished difference Result 1210 states and 1616 transitions. [2023-12-24 18:18:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 18:18:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2023-12-24 18:18:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:18:18,696 INFO L225 Difference]: With dead ends: 1210 [2023-12-24 18:18:18,696 INFO L226 Difference]: Without dead ends: 943 [2023-12-24 18:18:18,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:18:18,699 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 368 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:18:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 948 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 18:18:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-12-24 18:18:18,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 740. [2023-12-24 18:18:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 563 states have (on average 1.2326820603907638) internal successors, (694), 568 states have internal predecessors, (694), 149 states have call successors, (149), 27 states have call predecessors, (149), 27 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-24 18:18:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 992 transitions. [2023-12-24 18:18:18,764 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 992 transitions. Word has length 164 [2023-12-24 18:18:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:18:18,765 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 992 transitions. [2023-12-24 18:18:18,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 992 transitions. [2023-12-24 18:18:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 18:18:18,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:18:18,766 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:18,780 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 18:18:18,980 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 18:18:18,980 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:18:18,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:18:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2093733166, now seen corresponding path program 1 times [2023-12-24 18:18:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:18:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082884277] [2023-12-24 18:18:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:18,982 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 18:18:18,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:18:18,983 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 18:18:19,020 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 18:18:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:19,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 18:18:19,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:18:19,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:18:19,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:18:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082884277] [2023-12-24 18:18:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082884277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:18:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:18:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:18:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048036104] [2023-12-24 18:18:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:18:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:18:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:18:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:18:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:18:19,370 INFO L87 Difference]: Start difference. First operand 740 states and 992 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:18:19,598 INFO L93 Difference]: Finished difference Result 1521 states and 2040 transitions. [2023-12-24 18:18:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 18:18:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 165 [2023-12-24 18:18:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:18:19,614 INFO L225 Difference]: With dead ends: 1521 [2023-12-24 18:18:19,614 INFO L226 Difference]: Without dead ends: 782 [2023-12-24 18:18:19,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 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 18:18:19,617 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 39 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:18:19,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 557 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 18:18:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-24 18:18:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 749. [2023-12-24 18:18:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 572 states have (on average 1.229020979020979) internal successors, (703), 577 states have internal predecessors, (703), 149 states have call successors, (149), 27 states have call predecessors, (149), 27 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-24 18:18:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1001 transitions. [2023-12-24 18:18:19,704 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1001 transitions. Word has length 165 [2023-12-24 18:18:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:18:19,705 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1001 transitions. [2023-12-24 18:18:19,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:18:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1001 transitions. [2023-12-24 18:18:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 18:18:19,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:18:19,706 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:19,735 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 (20)] Ended with exit code 0 [2023-12-24 18:18:19,920 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 18:18:19,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:18:19,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:18:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash -732402850, now seen corresponding path program 1 times [2023-12-24 18:18:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:18:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629340776] [2023-12-24 18:18:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:19,921 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 18:18:19,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:18:19,937 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 18:18:19,974 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 18:18:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:20,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 18:18:20,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:20,634 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 18:18:20,985 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 80 treesize of output 34 [2023-12-24 18:18:21,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:21,601 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 109 treesize of output 54 [2023-12-24 18:18:21,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:21,812 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 109 treesize of output 54 [2023-12-24 18:18:22,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:22,029 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 109 treesize of output 54 [2023-12-24 18:18:22,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:22,221 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 104 treesize of output 64 [2023-12-24 18:18:22,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:22,581 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 119 treesize of output 67 [2023-12-24 18:18:22,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:22,855 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 114 treesize of output 77 [2023-12-24 18:18:23,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:23,447 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 129 treesize of output 80 [2023-12-24 18:18:23,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:23,813 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 124 treesize of output 90 [2023-12-24 18:18:24,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:24,386 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 139 treesize of output 93 [2023-12-24 18:18:24,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:24,807 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 139 treesize of output 93 [2023-12-24 18:18:25,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:25,191 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 152 treesize of output 113 [2023-12-24 18:18:25,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:25,522 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 156 treesize of output 116 [2023-12-24 18:18:25,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 116 [2023-12-24 18:18:26,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:26,033 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 191 treesize of output 71 [2023-12-24 18:18:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 498 proven. 130 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 18:18:26,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:18:27,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:18:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629340776] [2023-12-24 18:18:27,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629340776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:18:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1036122793] [2023-12-24 18:18:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:18:27,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:18:27,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:18:27,401 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 18:18:27,402 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 18:18:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:18:29,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 18:18:29,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:18:29,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 18:18:30,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:30,345 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 72 treesize of output 43 [2023-12-24 18:18:31,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:31,433 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 95 treesize of output 61 [2023-12-24 18:18:31,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:31,646 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 95 treesize of output 61 [2023-12-24 18:18:31,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:31,921 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 92 treesize of output 69 [2023-12-24 18:18:32,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:32,438 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 103 treesize of output 72 [2023-12-24 18:18:32,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:32,750 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 103 treesize of output 72 [2023-12-24 18:18:33,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:33,067 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 103 treesize of output 72 [2023-12-24 18:18:33,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:33,360 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 100 treesize of output 80 [2023-12-24 18:18:33,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:33,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 91 [2023-12-24 18:18:34,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:34,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 102 [2023-12-24 18:18:35,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:35,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 127 treesize of output 98 [2023-12-24 18:18:35,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:35,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 128 treesize of output 110 [2023-12-24 18:18:36,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:36,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 113 [2023-12-24 18:18:36,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 113 [2023-12-24 18:18:36,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:18:36,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 159 treesize of output 75 [2023-12-24 18:18:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 368 proven. 260 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-24 18:18:36,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:18:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1036122793] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:18:37,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:18:37,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2023-12-24 18:18:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949147877] [2023-12-24 18:18:37,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:18:37,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-24 18:18:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:18:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-24 18:18:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1746, Unknown=0, NotChecked=0, Total=2070 [2023-12-24 18:18:37,597 INFO L87 Difference]: Start difference. First operand 749 states and 1001 transitions. Second operand has 37 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 18:19:03,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:19:03,607 INFO L93 Difference]: Finished difference Result 2577 states and 3395 transitions. [2023-12-24 18:19:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-24 18:19:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) Word has length 165 [2023-12-24 18:19:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:19:03,616 INFO L225 Difference]: With dead ends: 2577 [2023-12-24 18:19:03,616 INFO L226 Difference]: Without dead ends: 1829 [2023-12-24 18:19:03,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 594 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3647 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=1953, Invalid=9603, Unknown=0, NotChecked=0, Total=11556 [2023-12-24 18:19:03,623 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1112 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:19:03,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1359 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3246 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-12-24 18:19:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-12-24 18:19:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1093. [2023-12-24 18:19:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 811 states have (on average 1.214549938347719) internal successors, (985), 819 states have internal predecessors, (985), 233 states have call successors, (233), 48 states have call predecessors, (233), 48 states have return successors, (233), 225 states have call predecessors, (233), 233 states have call successors, (233) [2023-12-24 18:19:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1451 transitions. [2023-12-24 18:19:03,810 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1451 transitions. Word has length 165 [2023-12-24 18:19:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:19:03,811 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1451 transitions. [2023-12-24 18:19:03,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.457142857142857) internal successors, (156), 34 states have internal predecessors, (156), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 12 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 18:19:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1451 transitions. [2023-12-24 18:19:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 18:19:03,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:19:03,813 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:03,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-24 18:19:04,075 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 18:19:04,258 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 18:19:04,259 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:19:04,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:19:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash 714178016, now seen corresponding path program 1 times [2023-12-24 18:19:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:19:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375176235] [2023-12-24 18:19:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:19:04,260 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 18:19:04,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:19:04,261 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 18:19:04,263 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 18:19:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:19:04,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:19:04,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:19:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-12-24 18:19:04,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:19:04,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:19:04,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375176235] [2023-12-24 18:19:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375176235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:19:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:19:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:19:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499755373] [2023-12-24 18:19:04,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:19:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:19:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:19:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:19:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:19:04,663 INFO L87 Difference]: Start difference. First operand 1093 states and 1451 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 18:19:05,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:19:05,117 INFO L93 Difference]: Finished difference Result 1975 states and 2599 transitions. [2023-12-24 18:19:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:19:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 165 [2023-12-24 18:19:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:19:05,122 INFO L225 Difference]: With dead ends: 1975 [2023-12-24 18:19:05,122 INFO L226 Difference]: Without dead ends: 955 [2023-12-24 18:19:05,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 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 18:19:05,125 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 6 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:19:05,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 552 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 18:19:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-12-24 18:19:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2023-12-24 18:19:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 709 states have (on average 1.2129760225669957) internal successors, (860), 713 states have internal predecessors, (860), 171 states have call successors, (171), 48 states have call predecessors, (171), 48 states have return successors, (171), 167 states have call predecessors, (171), 171 states have call successors, (171) [2023-12-24 18:19:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1202 transitions. [2023-12-24 18:19:05,235 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1202 transitions. Word has length 165 [2023-12-24 18:19:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:19:05,235 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1202 transitions. [2023-12-24 18:19:05,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 18:19:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1202 transitions. [2023-12-24 18:19:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 18:19:05,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:19:05,237 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:05,248 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 18:19:05,448 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 18:19:05,448 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:19:05,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:19:05,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1164392362, now seen corresponding path program 1 times [2023-12-24 18:19:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:19:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564180310] [2023-12-24 18:19:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:19:05,449 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 18:19:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:19:05,451 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 18:19:05,453 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 18:19:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:19:06,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 18:19:06,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:19:06,185 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 18:19:06,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 18:19:06,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:06,900 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 109 treesize of output 54 [2023-12-24 18:19:07,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:07,068 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 109 treesize of output 54 [2023-12-24 18:19:07,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:07,236 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 104 treesize of output 64 [2023-12-24 18:19:07,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:07,623 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 119 treesize of output 67 [2023-12-24 18:19:07,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:07,879 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 114 treesize of output 77 [2023-12-24 18:19:08,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:08,316 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 124 treesize of output 90 [2023-12-24 18:19:08,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:08,842 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 139 treesize of output 93 [2023-12-24 18:19:09,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:09,279 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 139 treesize of output 93 [2023-12-24 18:19:09,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:09,699 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 134 treesize of output 103 [2023-12-24 18:19:10,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:10,346 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 144 treesize of output 116 [2023-12-24 18:19:11,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:11,072 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 172 treesize of output 130 [2023-12-24 18:19:11,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:11,428 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 176 treesize of output 133 [2023-12-24 18:19:11,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 133 [2023-12-24 18:19:12,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:12,215 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 206 treesize of output 80 [2023-12-24 18:19:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 576 proven. 76 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-12-24 18:19:12,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:19:13,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:19:13,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564180310] [2023-12-24 18:19:13,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564180310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:19:13,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1267379016] [2023-12-24 18:19:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:19:13,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:19:13,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:19:13,583 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:19:13,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-24 18:19:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:19:15,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 18:19:15,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:19:15,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 18:19:17,266 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 0 case distinctions, treesize of input 70 treesize of output 41 [2023-12-24 18:19:18,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:18,301 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 118 treesize of output 72 [2023-12-24 18:19:18,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:18,585 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 118 treesize of output 72 [2023-12-24 18:19:18,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:18,891 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 115 treesize of output 80 [2023-12-24 18:19:19,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:19,606 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 126 treesize of output 83 [2023-12-24 18:19:20,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:20,001 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 123 treesize of output 91 [2023-12-24 18:19:20,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:20,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 134 treesize of output 94 [2023-12-24 18:19:21,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:21,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 102 [2023-12-24 18:19:21,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:21,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 142 treesize of output 105 [2023-12-24 18:19:22,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:22,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 113 [2023-12-24 18:19:23,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:23,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 147 treesize of output 117 [2023-12-24 18:19:24,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:24,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 159 treesize of output 125 [2023-12-24 18:19:24,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:24,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 160 treesize of output 129 [2023-12-24 18:19:24,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 129 [2023-12-24 18:19:25,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:19:25,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 187 treesize of output 91 [2023-12-24 18:19:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 456 proven. 212 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-24 18:19:25,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:19:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1267379016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:19:26,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:19:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-24 18:19:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757396025] [2023-12-24 18:19:26,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:19:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 18:19:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:19:26,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 18:19:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 18:19:26,479 INFO L87 Difference]: Start difference. First operand 929 states and 1202 transitions. Second operand has 40 states, 38 states have (on average 4.131578947368421) internal successors, (157), 36 states have internal predecessors, (157), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 18:19:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:19:59,574 INFO L93 Difference]: Finished difference Result 3040 states and 3934 transitions. [2023-12-24 18:19:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-24 18:19:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 4.131578947368421) internal successors, (157), 36 states have internal predecessors, (157), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 165 [2023-12-24 18:19:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:19:59,584 INFO L225 Difference]: With dead ends: 3040 [2023-12-24 18:19:59,584 INFO L226 Difference]: Without dead ends: 2200 [2023-12-24 18:19:59,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 587 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4738 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=2155, Invalid=12125, Unknown=0, NotChecked=0, Total=14280 [2023-12-24 18:19:59,588 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1138 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:19:59,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1789 Invalid, 4355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2023-12-24 18:19:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2023-12-24 18:19:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1382. [2023-12-24 18:19:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1014 states have (on average 1.1913214990138068) internal successors, (1208), 1026 states have internal predecessors, (1208), 296 states have call successors, (296), 71 states have call predecessors, (296), 71 states have return successors, (296), 284 states have call predecessors, (296), 296 states have call successors, (296) [2023-12-24 18:19:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1800 transitions. [2023-12-24 18:19:59,768 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1800 transitions. Word has length 165 [2023-12-24 18:19:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:19:59,768 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 1800 transitions. [2023-12-24 18:19:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 4.131578947368421) internal successors, (157), 36 states have internal predecessors, (157), 14 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-24 18:19:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1800 transitions. [2023-12-24 18:19:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-24 18:19:59,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:19:59,771 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:59,799 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 18:19:59,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-24 18:20:00,187 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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 18:20:00,188 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:00,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash 378394472, now seen corresponding path program 1 times [2023-12-24 18:20:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132244354] [2023-12-24 18:20:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:00,189 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 18:20:00,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:00,190 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 18:20:00,192 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 18:20:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:00,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 18:20:00,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 18:20:00,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:20:00,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132244354] [2023-12-24 18:20:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132244354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:20:00,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:20:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 18:20:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370927915] [2023-12-24 18:20:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:20:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:20:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 18:20:00,559 INFO L87 Difference]: Start difference. First operand 1382 states and 1800 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:01,000 INFO L93 Difference]: Finished difference Result 2449 states and 3164 transitions. [2023-12-24 18:20:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:20:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2023-12-24 18:20:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:01,004 INFO L225 Difference]: With dead ends: 2449 [2023-12-24 18:20:01,004 INFO L226 Difference]: Without dead ends: 1210 [2023-12-24 18:20:01,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 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 18:20:01,006 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 6 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:01,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 547 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 18:20:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-12-24 18:20:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1178. [2023-12-24 18:20:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 877 states have (on average 1.1892816419612315) internal successors, (1043), 885 states have internal predecessors, (1043), 230 states have call successors, (230), 70 states have call predecessors, (230), 70 states have return successors, (230), 222 states have call predecessors, (230), 230 states have call successors, (230) [2023-12-24 18:20:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1503 transitions. [2023-12-24 18:20:01,156 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1503 transitions. Word has length 165 [2023-12-24 18:20:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:01,157 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1503 transitions. [2023-12-24 18:20:01,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1503 transitions. [2023-12-24 18:20:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:01,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:01,159 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:01,187 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 18:20:01,371 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 18:20:01,372 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:01,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 645136173, now seen corresponding path program 1 times [2023-12-24 18:20:01,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:01,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707415809] [2023-12-24 18:20:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:01,373 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 18:20:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:01,385 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 18:20:01,386 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 18:20:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:02,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 18:20:02,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:02,173 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 18:20:02,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:20:02,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:02,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-24 18:20:02,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:02,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-24 18:20:02,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:02,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-24 18:20:02,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:02,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-24 18:20:03,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:03,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 34 [2023-12-24 18:20:03,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:03,192 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 44 [2023-12-24 18:20:03,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2023-12-24 18:20:04,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:04,031 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 127 treesize of output 102 [2023-12-24 18:20:04,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:04,445 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 128 treesize of output 121 [2023-12-24 18:20:04,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:04,701 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 143 treesize of output 124 [2023-12-24 18:20:05,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:05,024 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 154 treesize of output 66 [2023-12-24 18:20:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 391 proven. 117 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-24 18:20:06,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:20:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:20:07,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:07,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707415809] [2023-12-24 18:20:07,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707415809] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:20:07,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:20:07,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21] total 26 [2023-12-24 18:20:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636351974] [2023-12-24 18:20:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:20:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:20:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2023-12-24 18:20:07,088 INFO L87 Difference]: Start difference. First operand 1178 states and 1503 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:20:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:12,283 INFO L93 Difference]: Finished difference Result 2663 states and 3400 transitions. [2023-12-24 18:20:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:20:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-12-24 18:20:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:12,291 INFO L225 Difference]: With dead ends: 2663 [2023-12-24 18:20:12,291 INFO L226 Difference]: Without dead ends: 1638 [2023-12-24 18:20:12,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:20:12,294 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 509 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:12,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 374 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 18:20:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-12-24 18:20:12,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1529. [2023-12-24 18:20:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1177 states have (on average 1.2047578589634664) internal successors, (1418), 1191 states have internal predecessors, (1418), 264 states have call successors, (264), 87 states have call predecessors, (264), 87 states have return successors, (264), 250 states have call predecessors, (264), 264 states have call successors, (264) [2023-12-24 18:20:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1946 transitions. [2023-12-24 18:20:12,516 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1946 transitions. Word has length 167 [2023-12-24 18:20:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:12,516 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 1946 transitions. [2023-12-24 18:20:12,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:20:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1946 transitions. [2023-12-24 18:20:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:12,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:12,519 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:12,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 18:20:12,728 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 18:20:12,728 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:12,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -911604389, now seen corresponding path program 1 times [2023-12-24 18:20:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311553187] [2023-12-24 18:20:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:12,730 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 18:20:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:12,731 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 18:20:12,732 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 18:20:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:13,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 18:20:13,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:13,533 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 18:20:13,535 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 18:20:13,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:13,594 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 45 treesize of output 45 [2023-12-24 18:20:13,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:13,668 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 59 treesize of output 52 [2023-12-24 18:20:13,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:13,752 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 60 treesize of output 71 [2023-12-24 18:20:13,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:13,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 74 [2023-12-24 18:20:14,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:14,379 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 101 treesize of output 43 [2023-12-24 18:20:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-12-24 18:20:14,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:20:14,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311553187] [2023-12-24 18:20:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311553187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:20:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:20:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 18:20:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566488420] [2023-12-24 18:20:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:20:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:20:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-24 18:20:14,431 INFO L87 Difference]: Start difference. First operand 1529 states and 1946 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:19,825 INFO L93 Difference]: Finished difference Result 4171 states and 5287 transitions. [2023-12-24 18:20:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 18:20:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 167 [2023-12-24 18:20:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:19,835 INFO L225 Difference]: With dead ends: 4171 [2023-12-24 18:20:19,835 INFO L226 Difference]: Without dead ends: 2799 [2023-12-24 18:20:19,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:20:19,838 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 352 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:19,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 487 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 18:20:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2023-12-24 18:20:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 1645. [2023-12-24 18:20:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1260 states have (on average 1.1976190476190476) internal successors, (1509), 1276 states have internal predecessors, (1509), 288 states have call successors, (288), 96 states have call predecessors, (288), 96 states have return successors, (288), 272 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-24 18:20:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2085 transitions. [2023-12-24 18:20:20,116 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2085 transitions. Word has length 167 [2023-12-24 18:20:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:20,116 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2085 transitions. [2023-12-24 18:20:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2085 transitions. [2023-12-24 18:20:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:20,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:20,119 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:20,138 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 (28)] Ended with exit code 0 [2023-12-24 18:20:20,334 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 18:20:20,335 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:20,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash -911663971, now seen corresponding path program 1 times [2023-12-24 18:20:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863108809] [2023-12-24 18:20:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:20,336 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 18:20:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:20,337 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 18:20:20,339 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 18:20:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:21,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 18:20:21,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:21,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 18:20:21,134 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 44 treesize of output 26 [2023-12-24 18:20:21,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:21,191 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 18:20:21,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:21,228 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 49 treesize of output 48 [2023-12-24 18:20:21,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:21,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 51 [2023-12-24 18:20:21,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:21,570 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 90 treesize of output 38 [2023-12-24 18:20:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-24 18:20:21,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:20:21,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863108809] [2023-12-24 18:20:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863108809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:20:21,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:20:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 18:20:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57025635] [2023-12-24 18:20:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:21,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 18:20:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 18:20:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-24 18:20:21,624 INFO L87 Difference]: Start difference. First operand 1645 states and 2085 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:26,427 INFO L93 Difference]: Finished difference Result 2882 states and 3615 transitions. [2023-12-24 18:20:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 18:20:26,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 167 [2023-12-24 18:20:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:26,436 INFO L225 Difference]: With dead ends: 2882 [2023-12-24 18:20:26,436 INFO L226 Difference]: Without dead ends: 2880 [2023-12-24 18:20:26,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-12-24 18:20:26,437 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 211 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:26,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 527 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 18:20:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2023-12-24 18:20:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1933. [2023-12-24 18:20:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1488 states have (on average 1.1922043010752688) internal successors, (1774), 1509 states have internal predecessors, (1774), 333 states have call successors, (333), 111 states have call predecessors, (333), 111 states have return successors, (333), 312 states have call predecessors, (333), 333 states have call successors, (333) [2023-12-24 18:20:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2440 transitions. [2023-12-24 18:20:26,765 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2440 transitions. Word has length 167 [2023-12-24 18:20:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:26,765 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 2440 transitions. [2023-12-24 18:20:26,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-24 18:20:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2440 transitions. [2023-12-24 18:20:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:26,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:26,768 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:26,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 18:20:26,984 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 18:20:26,984 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:26,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash -854346087, now seen corresponding path program 1 times [2023-12-24 18:20:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950945146] [2023-12-24 18:20:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:26,985 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 18:20:26,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:26,987 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 18:20:26,989 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 18:20:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:27,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-24 18:20:27,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:27,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:27,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:27,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:27,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:27,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:28,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:28,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 18:20:28,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:28,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:20:28,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:28,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:20:28,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:28,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-12-24 18:20:29,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:29,124 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 70 treesize of output 66 [2023-12-24 18:20:29,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:29,417 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 65 treesize of output 76 [2023-12-24 18:20:29,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:29,854 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 93 treesize of output 90 [2023-12-24 18:20:30,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:30,088 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 97 treesize of output 93 [2023-12-24 18:20:30,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:30,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 98 treesize of output 103 [2023-12-24 18:20:30,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:30,439 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 108 treesize of output 118 [2023-12-24 18:20:31,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:31,331 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 145 treesize of output 63 [2023-12-24 18:20:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-24 18:20:31,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:20:31,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950945146] [2023-12-24 18:20:31,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950945146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:20:31,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:20:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 18:20:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737593050] [2023-12-24 18:20:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 18:20:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 18:20:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-24 18:20:31,412 INFO L87 Difference]: Start difference. First operand 1933 states and 2440 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-24 18:20:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:38,849 INFO L93 Difference]: Finished difference Result 3793 states and 4788 transitions. [2023-12-24 18:20:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:20:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 167 [2023-12-24 18:20:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:38,864 INFO L225 Difference]: With dead ends: 3793 [2023-12-24 18:20:38,864 INFO L226 Difference]: Without dead ends: 2115 [2023-12-24 18:20:38,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2023-12-24 18:20:38,867 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 325 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:38,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 761 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-24 18:20:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2023-12-24 18:20:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1933. [2023-12-24 18:20:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1488 states have (on average 1.1908602150537635) internal successors, (1772), 1509 states have internal predecessors, (1772), 333 states have call successors, (333), 111 states have call predecessors, (333), 111 states have return successors, (333), 312 states have call predecessors, (333), 333 states have call successors, (333) [2023-12-24 18:20:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2438 transitions. [2023-12-24 18:20:39,164 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2438 transitions. Word has length 167 [2023-12-24 18:20:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:39,164 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 2438 transitions. [2023-12-24 18:20:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 6 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-24 18:20:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2438 transitions. [2023-12-24 18:20:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:39,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:39,166 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:39,182 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 18:20:39,380 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 18:20:39,380 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:39,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1663692713, now seen corresponding path program 1 times [2023-12-24 18:20:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353004761] [2023-12-24 18:20:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:39,381 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 18:20:39,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:39,389 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 18:20:39,390 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 18:20:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:40,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-24 18:20:40,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:40,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:40,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:40,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:40,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 18:20:40,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 18:20:40,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:40,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:20:40,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:40,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-24 18:20:41,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:41,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-12-24 18:20:41,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:41,747 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 65 treesize of output 76 [2023-12-24 18:20:42,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 79 [2023-12-24 18:20:44,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:44,106 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 97 treesize of output 108 [2023-12-24 18:20:45,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:45,023 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 107 treesize of output 121 [2023-12-24 18:20:46,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:46,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 135 treesize of output 135 [2023-12-24 18:20:46,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:46,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 158 treesize of output 160 [2023-12-24 18:20:47,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:47,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 169 treesize of output 174 [2023-12-24 18:20:47,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:47,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 179 treesize of output 178 [2023-12-24 18:20:49,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:49,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 252 treesize of output 116 [2023-12-24 18:20:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 682 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-24 18:20:49,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:20:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:20:49,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:49,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353004761] [2023-12-24 18:20:49,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353004761] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:20:49,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:20:49,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 26 [2023-12-24 18:20:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391218738] [2023-12-24 18:20:49,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:49,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 18:20:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 18:20:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-12-24 18:20:49,934 INFO L87 Difference]: Start difference. First operand 1933 states and 2438 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:20:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:20:53,870 INFO L93 Difference]: Finished difference Result 4238 states and 5330 transitions. [2023-12-24 18:20:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:20:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-12-24 18:20:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:20:53,883 INFO L225 Difference]: With dead ends: 4238 [2023-12-24 18:20:53,883 INFO L226 Difference]: Without dead ends: 2560 [2023-12-24 18:20:53,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-24 18:20:53,888 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 134 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-24 18:20:53,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 765 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-24 18:20:53,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2023-12-24 18:20:54,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2154. [2023-12-24 18:20:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 1644 states have (on average 1.1824817518248176) internal successors, (1944), 1666 states have internal predecessors, (1944), 381 states have call successors, (381), 128 states have call predecessors, (381), 128 states have return successors, (381), 359 states have call predecessors, (381), 381 states have call successors, (381) [2023-12-24 18:20:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2706 transitions. [2023-12-24 18:20:54,284 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2706 transitions. Word has length 167 [2023-12-24 18:20:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:20:54,284 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 2706 transitions. [2023-12-24 18:20:54,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:20:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2706 transitions. [2023-12-24 18:20:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:20:54,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:20:54,286 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:54,299 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 18:20:54,499 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 18:20:54,499 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:20:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:20:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1386973538, now seen corresponding path program 1 times [2023-12-24 18:20:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:20:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449682687] [2023-12-24 18:20:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:20:54,500 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 18:20:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:20:54,502 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 18:20:54,503 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 18:20:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:20:55,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:20:55,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:20:55,214 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 28 treesize of output 12 [2023-12-24 18:20:55,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2023-12-24 18:20:55,254 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 28 treesize of output 12 [2023-12-24 18:20:55,280 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 28 treesize of output 12 [2023-12-24 18:20:55,303 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 28 treesize of output 12 [2023-12-24 18:20:55,328 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 28 treesize of output 12 [2023-12-24 18:20:55,354 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 28 treesize of output 12 [2023-12-24 18:20:55,381 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 28 treesize of output 12 [2023-12-24 18:20:55,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-24 18:20:55,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:55,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-12-24 18:20:55,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:55,626 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 25 [2023-12-24 18:20:55,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:55,726 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 18:20:55,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:55,922 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 49 [2023-12-24 18:20:56,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:56,022 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 65 treesize of output 52 [2023-12-24 18:20:56,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:56,110 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 65 treesize of output 63 [2023-12-24 18:20:56,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:20:56,558 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 94 treesize of output 46 [2023-12-24 18:20:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 18:20:56,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:20:56,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:20:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449682687] [2023-12-24 18:20:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449682687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:20:56,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:20:56,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 18:20:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352294202] [2023-12-24 18:20:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:20:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:20:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:20:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:20:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:20:56,608 INFO L87 Difference]: Start difference. First operand 2154 states and 2706 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 18:21:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:21:01,518 INFO L93 Difference]: Finished difference Result 5614 states and 7055 transitions. [2023-12-24 18:21:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 18:21:01,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 167 [2023-12-24 18:21:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:21:01,529 INFO L225 Difference]: With dead ends: 5614 [2023-12-24 18:21:01,529 INFO L226 Difference]: Without dead ends: 3715 [2023-12-24 18:21:01,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-24 18:21:01,532 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 343 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-24 18:21:01,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 706 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-24 18:21:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2023-12-24 18:21:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3373. [2023-12-24 18:21:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3373 states, 2593 states have (on average 1.1893559583494022) internal successors, (3084), 2621 states have internal predecessors, (3084), 582 states have call successors, (582), 197 states have call predecessors, (582), 197 states have return successors, (582), 554 states have call predecessors, (582), 582 states have call successors, (582) [2023-12-24 18:21:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4248 transitions. [2023-12-24 18:21:02,311 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4248 transitions. Word has length 167 [2023-12-24 18:21:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:21:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 3373 states and 4248 transitions. [2023-12-24 18:21:02,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-24 18:21:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4248 transitions. [2023-12-24 18:21:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:21:02,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:21:02,314 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 18:21:02,532 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 18:21:02,532 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:21:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:21:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1726603089, now seen corresponding path program 1 times [2023-12-24 18:21:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:21:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276645409] [2023-12-24 18:21:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:21:02,533 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 18:21:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:21:02,534 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 18:21:02,535 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 18:21:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:21:03,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 18:21:03,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:21:03,324 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 18:21:03,462 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 36 treesize of output 29 [2023-12-24 18:21:03,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:03,620 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 51 treesize of output 32 [2023-12-24 18:21:03,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:03,782 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 51 treesize of output 32 [2023-12-24 18:21:03,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:03,905 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 51 treesize of output 32 [2023-12-24 18:21:04,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:04,063 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 46 treesize of output 42 [2023-12-24 18:21:04,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:04,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:21:04,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:04,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 18:21:04,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 60 [2023-12-24 18:21:06,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:06,044 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 121 treesize of output 123 [2023-12-24 18:21:06,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:06,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 127 [2023-12-24 18:21:07,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:07,123 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 142 treesize of output 60 [2023-12-24 18:21:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 519 proven. 45 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-24 18:21:07,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:21:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:21:08,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:21:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276645409] [2023-12-24 18:21:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276645409] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:21:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:21:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-12-24 18:21:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758462870] [2023-12-24 18:21:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:21:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:21:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:21:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:21:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-24 18:21:08,988 INFO L87 Difference]: Start difference. First operand 3373 states and 4248 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:21:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:21:15,497 INFO L93 Difference]: Finished difference Result 6686 states and 8388 transitions. [2023-12-24 18:21:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 18:21:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-12-24 18:21:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:21:15,508 INFO L225 Difference]: With dead ends: 6686 [2023-12-24 18:21:15,508 INFO L226 Difference]: Without dead ends: 3584 [2023-12-24 18:21:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 311 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-12-24 18:21:15,514 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 242 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 35 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-24 18:21:15,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 553 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 357 Invalid, 4 Unknown, 0 Unchecked, 5.4s Time] [2023-12-24 18:21:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2023-12-24 18:21:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3468. [2023-12-24 18:21:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 2662 states have (on average 1.183320811419985) internal successors, (3150), 2692 states have internal predecessors, (3150), 590 states have call successors, (590), 215 states have call predecessors, (590), 215 states have return successors, (590), 560 states have call predecessors, (590), 590 states have call successors, (590) [2023-12-24 18:21:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 4330 transitions. [2023-12-24 18:21:16,117 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 4330 transitions. Word has length 167 [2023-12-24 18:21:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:21:16,117 INFO L495 AbstractCegarLoop]: Abstraction has 3468 states and 4330 transitions. [2023-12-24 18:21:16,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:21:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 4330 transitions. [2023-12-24 18:21:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:21:16,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:21:16,119 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:16,132 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 18:21:16,331 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 18:21:16,332 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:21:16,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:21:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash 259535321, now seen corresponding path program 1 times [2023-12-24 18:21:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:21:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060802585] [2023-12-24 18:21:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:21:16,333 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 18:21:16,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:21:16,334 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 18:21:16,352 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 (34)] Waiting until timeout for monitored process [2023-12-24 18:21:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:21:17,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 18:21:17,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:21:17,062 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 18:21:17,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:21:17,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-24 18:21:17,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 18:21:17,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:17,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-24 18:21:17,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:17,800 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 57 treesize of output 56 [2023-12-24 18:21:18,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:18,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 69 [2023-12-24 18:21:18,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:18,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 82 [2023-12-24 18:21:19,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:19,161 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 105 treesize of output 96 [2023-12-24 18:21:20,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:20,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 138 [2023-12-24 18:21:20,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:20,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 148 treesize of output 141 [2023-12-24 18:21:20,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:20,978 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 149 treesize of output 61 [2023-12-24 18:21:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 604 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-24 18:21:21,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:21:22,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:21:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060802585] [2023-12-24 18:21:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060802585] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:21:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [278099872] [2023-12-24 18:21:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:21:22,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 18:21:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 18:21:22,491 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 18:21:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-24 18:21:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:21:24,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 18:21:24,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:21:24,564 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 8 treesize of output 4 [2023-12-24 18:21:24,716 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 12 treesize of output 8 [2023-12-24 18:21:25,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2023-12-24 18:21:26,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2023-12-24 18:21:26,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:26,567 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 47 treesize of output 41 [2023-12-24 18:21:26,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:26,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 18:21:27,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:27,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 18:21:27,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:27,463 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 37 treesize of output 42 [2023-12-24 18:21:27,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:27,991 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 45 treesize of output 53 [2023-12-24 18:21:28,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:28,519 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 65 treesize of output 65 [2023-12-24 18:21:29,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:29,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 103 [2023-12-24 18:21:29,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:29,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 99 treesize of output 107 [2023-12-24 18:21:30,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:30,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 100 treesize of output 52 [2023-12-24 18:21:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 576 proven. 84 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 18:21:30,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:21:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [278099872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 18:21:31,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 18:21:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-12-24 18:21:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287592378] [2023-12-24 18:21:31,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 18:21:31,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 18:21:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:21:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 18:21:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1478, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 18:21:31,266 INFO L87 Difference]: Start difference. First operand 3468 states and 4330 transitions. Second operand has 38 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) [2023-12-24 18:21:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:21:53,446 INFO L93 Difference]: Finished difference Result 7858 states and 9571 transitions. [2023-12-24 18:21:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-24 18:21:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) Word has length 167 [2023-12-24 18:21:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:21:53,455 INFO L225 Difference]: With dead ends: 7858 [2023-12-24 18:21:53,455 INFO L226 Difference]: Without dead ends: 4661 [2023-12-24 18:21:53,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 352 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1448, Invalid=5032, Unknown=0, NotChecked=0, Total=6480 [2023-12-24 18:21:53,460 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 906 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-24 18:21:53,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1305 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-12-24 18:21:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2023-12-24 18:21:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 1902. [2023-12-24 18:21:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1521 states have (on average 1.2044707429322814) internal successors, (1832), 1525 states have internal predecessors, (1832), 248 states have call successors, (248), 132 states have call predecessors, (248), 132 states have return successors, (248), 244 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-24 18:21:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2328 transitions. [2023-12-24 18:21:53,874 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2328 transitions. Word has length 167 [2023-12-24 18:21:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:21:53,875 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2328 transitions. [2023-12-24 18:21:53,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 5.117647058823529) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) [2023-12-24 18:21:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2328 transitions. [2023-12-24 18:21:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-24 18:21:53,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:21:53,876 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:53,889 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 18:21:54,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2023-12-24 18:21:54,288 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=3,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 18:21:54,288 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:21:54,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:21:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash 150959076, now seen corresponding path program 1 times [2023-12-24 18:21:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:21:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970940170] [2023-12-24 18:21:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:21:54,290 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 18:21:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:21:54,290 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 18:21:54,292 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 18:21:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:21:54,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 18:21:54,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:21:54,946 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 18:21:55,377 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 78 treesize of output 32 [2023-12-24 18:21:55,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:55,966 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 107 treesize of output 52 [2023-12-24 18:21:56,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:56,192 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 107 treesize of output 52 [2023-12-24 18:21:56,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:56,405 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 102 treesize of output 62 [2023-12-24 18:21:56,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:56,815 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 117 treesize of output 65 [2023-12-24 18:21:57,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:57,177 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 117 treesize of output 65 [2023-12-24 18:21:57,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:57,530 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 112 treesize of output 75 [2023-12-24 18:21:58,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:58,106 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 127 treesize of output 78 [2023-12-24 18:21:58,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:58,555 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 127 treesize of output 78 [2023-12-24 18:21:58,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:58,994 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 122 treesize of output 88 [2023-12-24 18:21:59,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:21:59,620 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 137 treesize of output 91 [2023-12-24 18:22:00,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:00,112 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 150 treesize of output 111 [2023-12-24 18:22:00,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:00,437 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 154 treesize of output 114 [2023-12-24 18:22:03,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 142 [2023-12-24 18:22:05,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:05,966 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 301 treesize of output 109 [2023-12-24 18:22:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 504 proven. 108 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 18:22:09,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:22:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:22:22,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:22:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970940170] [2023-12-24 18:22:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970940170] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:22:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:22:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [23] total 29 [2023-12-24 18:22:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437743703] [2023-12-24 18:22:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:22:22,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:22:22,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:22:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:22:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:22:22,734 INFO L87 Difference]: Start difference. First operand 1902 states and 2328 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:22:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:22:47,857 INFO L93 Difference]: Finished difference Result 4012 states and 4887 transitions. [2023-12-24 18:22:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:22:47,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-12-24 18:22:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:22:47,866 INFO L225 Difference]: With dead ends: 4012 [2023-12-24 18:22:47,866 INFO L226 Difference]: Without dead ends: 2111 [2023-12-24 18:22:47,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2023-12-24 18:22:47,869 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 124 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:22:47,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 549 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2023-12-24 18:22:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2023-12-24 18:22:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1392. [2023-12-24 18:22:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1127 states have (on average 1.199645075421473) internal successors, (1352), 1131 states have internal predecessors, (1352), 172 states have call successors, (172), 92 states have call predecessors, (172), 92 states have return successors, (172), 168 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-24 18:22:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1696 transitions. [2023-12-24 18:22:48,178 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1696 transitions. Word has length 167 [2023-12-24 18:22:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:22:48,178 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1696 transitions. [2023-12-24 18:22:48,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:22:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1696 transitions. [2023-12-24 18:22:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 18:22:48,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:22:48,180 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:48,192 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 18:22:48,392 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 18:22:48,392 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:22:48,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:22:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 698721620, now seen corresponding path program 1 times [2023-12-24 18:22:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:22:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407254343] [2023-12-24 18:22:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:22:48,393 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 18:22:48,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:22:48,394 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 18:22:48,395 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 18:22:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:22:49,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 18:22:49,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:22:49,370 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 18:22:49,374 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 18:22:49,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-12-24 18:22:49,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:49,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2023-12-24 18:22:49,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:49,740 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 63 treesize of output 51 [2023-12-24 18:22:49,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:49,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 74 [2023-12-24 18:22:49,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:49,936 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 79 treesize of output 78 [2023-12-24 18:22:50,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:50,061 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 80 treesize of output 88 [2023-12-24 18:22:50,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:50,183 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 95 treesize of output 91 [2023-12-24 18:22:50,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:50,497 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 124 treesize of output 54 [2023-12-24 18:22:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-24 18:22:50,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:22:50,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:22:50,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407254343] [2023-12-24 18:22:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407254343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:22:50,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:22:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 18:22:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642729190] [2023-12-24 18:22:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:22:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 18:22:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:22:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 18:22:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-24 18:22:50,643 INFO L87 Difference]: Start difference. First operand 1392 states and 1696 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 18:22:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:22:57,711 INFO L93 Difference]: Finished difference Result 2765 states and 3358 transitions. [2023-12-24 18:22:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 18:22:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2023-12-24 18:22:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:22:57,716 INFO L225 Difference]: With dead ends: 2765 [2023-12-24 18:22:57,716 INFO L226 Difference]: Without dead ends: 2007 [2023-12-24 18:22:57,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=249, Invalid=453, Unknown=0, NotChecked=0, Total=702 [2023-12-24 18:22:57,717 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 546 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-24 18:22:57,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 767 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-24 18:22:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2023-12-24 18:22:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1372. [2023-12-24 18:22:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1107 states have (on average 1.1978319783197833) internal successors, (1326), 1111 states have internal predecessors, (1326), 172 states have call successors, (172), 92 states have call predecessors, (172), 92 states have return successors, (172), 168 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-24 18:22:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1670 transitions. [2023-12-24 18:22:58,036 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1670 transitions. Word has length 168 [2023-12-24 18:22:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:22:58,036 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 1670 transitions. [2023-12-24 18:22:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-24 18:22:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1670 transitions. [2023-12-24 18:22:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-24 18:22:58,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:22:58,038 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:58,061 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 18:22:58,247 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 18:22:58,248 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:22:58,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:22:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -800760640, now seen corresponding path program 1 times [2023-12-24 18:22:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:22:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456859487] [2023-12-24 18:22:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:22:58,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 18:22:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:22:58,250 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 18:22:58,286 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 18:22:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:22:58,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 18:22:58,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:22:58,946 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 18:22:58,949 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 19 treesize of output 1 [2023-12-24 18:22:58,951 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 20 treesize of output 20 [2023-12-24 18:22:58,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:58,965 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 36 treesize of output 34 [2023-12-24 18:22:59,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:22:59,159 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 73 treesize of output 33 [2023-12-24 18:22:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-24 18:22:59,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:22:59,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:22:59,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456859487] [2023-12-24 18:22:59,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456859487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:22:59,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:22:59,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 18:22:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594674274] [2023-12-24 18:22:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:22:59,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 18:22:59,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:22:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 18:22:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 18:22:59,185 INFO L87 Difference]: Start difference. First operand 1372 states and 1670 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:23:02,385 INFO L93 Difference]: Finished difference Result 2474 states and 3003 transitions. [2023-12-24 18:23:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 18:23:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-12-24 18:23:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:23:02,389 INFO L225 Difference]: With dead ends: 2474 [2023-12-24 18:23:02,389 INFO L226 Difference]: Without dead ends: 1739 [2023-12-24 18:23:02,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-24 18:23:02,390 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 219 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 18:23:02,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 758 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 18:23:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-12-24 18:23:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1038. [2023-12-24 18:23:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 839 states have (on average 1.2073897497020263) internal successors, (1013), 842 states have internal predecessors, (1013), 129 states have call successors, (129), 69 states have call predecessors, (129), 69 states have return successors, (129), 126 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 18:23:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1271 transitions. [2023-12-24 18:23:02,671 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1271 transitions. Word has length 168 [2023-12-24 18:23:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:23:02,672 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1271 transitions. [2023-12-24 18:23:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1271 transitions. [2023-12-24 18:23:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-24 18:23:02,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:23:02,674 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:23:02,686 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 18:23:02,874 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 18:23:02,874 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:23:02,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:23:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -958045280, now seen corresponding path program 1 times [2023-12-24 18:23:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:23:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982536304] [2023-12-24 18:23:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:23:02,875 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 18:23:02,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:23:02,876 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 18:23:02,877 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 18:23:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:23:04,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 18:23:04,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:23:04,615 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 18:23:04,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2023-12-24 18:23:05,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:05,208 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 73 treesize of output 42 [2023-12-24 18:23:05,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:05,382 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 68 treesize of output 52 [2023-12-24 18:23:05,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:05,691 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 83 treesize of output 55 [2023-12-24 18:23:05,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:05,988 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 83 treesize of output 55 [2023-12-24 18:23:06,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:06,323 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 78 treesize of output 65 [2023-12-24 18:23:06,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:06,724 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 64 [2023-12-24 18:23:07,230 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 84 treesize of output 78 [2023-12-24 18:23:07,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:07,711 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 119 treesize of output 121 [2023-12-24 18:23:08,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:08,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 156 treesize of output 134 [2023-12-24 18:23:08,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:08,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 151 treesize of output 135 [2023-12-24 18:23:09,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:09,564 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 162 treesize of output 66 [2023-12-24 18:23:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 1876 proven. 117 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2023-12-24 18:23:10,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:23:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-12-24 18:23:11,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:23:11,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982536304] [2023-12-24 18:23:11,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982536304] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:23:11,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:23:11,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24] total 29 [2023-12-24 18:23:11,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237596366] [2023-12-24 18:23:11,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:23:11,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:23:11,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:23:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:23:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2023-12-24 18:23:11,631 INFO L87 Difference]: Start difference. First operand 1038 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:23:16,479 INFO L93 Difference]: Finished difference Result 2840 states and 3459 transitions. [2023-12-24 18:23:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:23:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 334 [2023-12-24 18:23:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:23:16,484 INFO L225 Difference]: With dead ends: 2840 [2023-12-24 18:23:16,484 INFO L226 Difference]: Without dead ends: 1803 [2023-12-24 18:23:16,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 638 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2023-12-24 18:23:16,485 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 270 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-24 18:23:16,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 586 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-24 18:23:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2023-12-24 18:23:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1038. [2023-12-24 18:23:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 839 states have (on average 1.203814064362336) internal successors, (1010), 842 states have internal predecessors, (1010), 129 states have call successors, (129), 69 states have call predecessors, (129), 69 states have return successors, (129), 126 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 18:23:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1268 transitions. [2023-12-24 18:23:16,773 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1268 transitions. Word has length 334 [2023-12-24 18:23:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:23:16,774 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1268 transitions. [2023-12-24 18:23:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1268 transitions. [2023-12-24 18:23:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-24 18:23:16,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:23:16,776 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 18:23:16,795 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 (39)] Ended with exit code 0 [2023-12-24 18:23:16,976 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 18:23:16,976 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:23:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:23:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1666247332, now seen corresponding path program 1 times [2023-12-24 18:23:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:23:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855341683] [2023-12-24 18:23:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:23:16,977 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 18:23:16,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:23:16,978 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 18:23:16,979 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 18:23:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:23:18,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 18:23:18,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:23:18,997 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 18:23:19,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:23:19,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 18:23:19,120 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 18:23:19,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:19,231 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 36 treesize of output 38 [2023-12-24 18:23:19,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:19,376 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 46 treesize of output 51 [2023-12-24 18:23:19,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:19,573 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 64 [2023-12-24 18:23:19,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:19,850 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 71 treesize of output 67 [2023-12-24 18:23:20,070 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 84 treesize of output 87 [2023-12-24 18:23:20,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:20,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 119 treesize of output 130 [2023-12-24 18:23:21,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:21,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 152 treesize of output 145 [2023-12-24 18:23:21,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:21,682 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 163 treesize of output 67 [2023-12-24 18:23:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 1928 proven. 45 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2023-12-24 18:23:22,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 18:23:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-12-24 18:23:23,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:23:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855341683] [2023-12-24 18:23:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855341683] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 18:23:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 18:23:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2023-12-24 18:23:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716667976] [2023-12-24 18:23:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:23:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 18:23:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:23:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 18:23:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-12-24 18:23:23,272 INFO L87 Difference]: Start difference. First operand 1038 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:23:28,269 INFO L93 Difference]: Finished difference Result 2801 states and 3412 transitions. [2023-12-24 18:23:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 18:23:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 334 [2023-12-24 18:23:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:23:28,274 INFO L225 Difference]: With dead ends: 2801 [2023-12-24 18:23:28,274 INFO L226 Difference]: Without dead ends: 1764 [2023-12-24 18:23:28,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2023-12-24 18:23:28,275 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 235 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 18:23:28,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 692 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 392 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 18:23:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-12-24 18:23:28,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1038. [2023-12-24 18:23:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 839 states have (on average 1.200238379022646) internal successors, (1007), 842 states have internal predecessors, (1007), 129 states have call successors, (129), 69 states have call predecessors, (129), 69 states have return successors, (129), 126 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-24 18:23:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1265 transitions. [2023-12-24 18:23:28,554 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1265 transitions. Word has length 334 [2023-12-24 18:23:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:23:28,555 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1265 transitions. [2023-12-24 18:23:28,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1265 transitions. [2023-12-24 18:23:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-24 18:23:28,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 18:23:28,557 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 18:23:28,574 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 18:23:28,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:23:28,760 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 18:23:28,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 18:23:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1808426875, now seen corresponding path program 1 times [2023-12-24 18:23:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 18:23:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401031073] [2023-12-24 18:23:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 18:23:28,762 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 18:23:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 18:23:28,763 INFO L229 MonitoredProcess]: Starting monitored process 41 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 18:23:28,766 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 (41)] Waiting until timeout for monitored process [2023-12-24 18:23:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 18:23:31,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 18:23:31,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 18:23:31,062 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 18:23:31,065 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 19 treesize of output 19 [2023-12-24 18:23:31,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 18:23:31,129 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 57 treesize of output 27 [2023-12-24 18:23:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-12-24 18:23:31,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 18:23:31,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 18:23:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401031073] [2023-12-24 18:23:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401031073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 18:23:31,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 18:23:31,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 18:23:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589120434] [2023-12-24 18:23:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 18:23:31,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 18:23:31,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 18:23:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 18:23:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 18:23:31,149 INFO L87 Difference]: Start difference. First operand 1038 states and 1265 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 18:23:33,033 INFO L93 Difference]: Finished difference Result 2023 states and 2469 transitions. [2023-12-24 18:23:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 18:23:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 336 [2023-12-24 18:23:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 18:23:33,035 INFO L225 Difference]: With dead ends: 2023 [2023-12-24 18:23:33,035 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 18:23:33,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 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 18:23:33,037 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 108 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 18:23:33,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 603 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 18:23:33,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 18:23:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 18:23:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 18:23:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 18:23:33,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 336 [2023-12-24 18:23:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 18:23:33,038 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 18:23:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-24 18:23:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 18:23:33,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 18:23:33,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 18:23:33,063 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 18:23:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 18:23:33,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:24:28,852 WARN L293 SmtUtils]: Spent 55.60s on a formula simplification. DAG size of input: 540 DAG size of output: 550 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-24 18:24:39,966 WARN L293 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 488 DAG size of output: 480 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-24 18:25:02,218 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-16-5-6-25-6-25-6-25-6-25-5-13-4-13-3-13-2-13-2-13-2-8-2-8-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-60-18-6-25-6-25-6-25-6-19-4-13-4-13-4-13-3-13-3-8-2-8-2-4-1 context. [2023-12-24 18:25:02,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:25:02,235 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 18:25:02,240 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 18:25:02,243 INFO L158 Benchmark]: Toolchain (without parser) took 853359.64ms. Allocated memory was 234.9MB in the beginning and 805.3MB in the end (delta: 570.4MB). Free memory was 170.6MB in the beginning and 442.8MB in the end (delta: -272.2MB). Peak memory consumption was 299.0MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 234.9MB. Free memory was 184.4MB in the beginning and 184.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.78ms. Allocated memory was 234.9MB in the beginning and 305.1MB in the end (delta: 70.3MB). Free memory was 170.4MB in the beginning and 269.5MB in the end (delta: -99.1MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 305.1MB. Free memory was 269.5MB in the beginning and 265.4MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: Boogie Preprocessor took 100.89ms. Allocated memory is still 305.1MB. Free memory was 265.4MB in the beginning and 260.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: RCFGBuilder took 1092.89ms. Allocated memory is still 305.1MB. Free memory was 260.7MB in the beginning and 221.4MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,243 INFO L158 Benchmark]: TraceAbstraction took 851783.66ms. Allocated memory was 305.1MB in the beginning and 805.3MB in the end (delta: 500.2MB). Free memory was 220.8MB in the beginning and 442.8MB in the end (delta: -222.0MB). Peak memory consumption was 278.7MB. Max. memory is 8.0GB. [2023-12-24 18:25:02,244 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 234.9MB. Free memory was 184.4MB in the beginning and 184.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 316.78ms. Allocated memory was 234.9MB in the beginning and 305.1MB in the end (delta: 70.3MB). Free memory was 170.4MB in the beginning and 269.5MB in the end (delta: -99.1MB). Peak memory consumption was 23.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 305.1MB. Free memory was 269.5MB in the beginning and 265.4MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 100.89ms. Allocated memory is still 305.1MB. Free memory was 265.4MB in the beginning and 260.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1092.89ms. Allocated memory is still 305.1MB. Free memory was 260.7MB in the beginning and 221.4MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 851783.66ms. Allocated memory was 305.1MB in the beginning and 805.3MB in the end (delta: 500.2MB). Free memory was 220.8MB in the beginning and 442.8MB in the end (delta: -222.0MB). Peak memory consumption was 278.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-16-5-6-26-6-26-6-26-6-26-5-13-4-13-3-13-2-13-2-13-2-8-2-8-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-52-18-6-26-6-26-6-26-6-26-5-13-4-13-3-13-2-13-2-13-2-8-2-8-2-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown