/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_operatoramount_amount500_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 10:20:07,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 10:20:07,406 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 10:20:07,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 10:20:07,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 10:20:07,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 10:20:07,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 10:20:07,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 10:20:07,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 10:20:07,438 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 10:20:07,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 10:20:07,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 10:20:07,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 10:20:07,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 10:20:07,440 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 10:20:07,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 10:20:07,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 10:20:07,440 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 10:20:07,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 10:20:07,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 10:20:07,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 10:20:07,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 10:20:07,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 10:20:07,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 10:20:07,442 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 10:20:07,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 10:20:07,443 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 10:20:07,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 10:20:07,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 10:20:07,443 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 10:20:07,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 10:20:07,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 10:20:07,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 10:20:07,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 10:20:07,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 10:20:07,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 10:20:07,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 10:20:07,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 10:20:07,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 10:20:07,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 10:20:07,446 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 10:20:07,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 10:20:07,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 10:20:07,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 10:20:07,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 10:20:07,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 10:20:07,664 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 10:20:07,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i [2023-12-24 10:20:08,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 10:20:08,956 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 10:20:08,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i [2023-12-24 10:20:08,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee5abf74/fd5d76987fb9495bb35e69a6f54cc5c7/FLAG4f22faaab [2023-12-24 10:20:08,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee5abf74/fd5d76987fb9495bb35e69a6f54cc5c7 [2023-12-24 10:20:08,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 10:20:08,988 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 10:20:08,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 10:20:08,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 10:20:08,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 10:20:08,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:20:08" (1/1) ... [2023-12-24 10:20:08,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f94f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:08, skipping insertion in model container [2023-12-24 10:20:08,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:20:08" (1/1) ... [2023-12-24 10:20:09,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 10:20:09,163 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_operatoramount_amount500_file-98.i[916,929] [2023-12-24 10:20:09,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 10:20:09,342 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 10:20:09,355 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_operatoramount_amount500_file-98.i[916,929] [2023-12-24 10:20:09,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 10:20:09,486 INFO L206 MainTranslator]: Completed translation [2023-12-24 10:20:09,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09 WrapperNode [2023-12-24 10:20:09,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 10:20:09,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 10:20:09,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 10:20:09,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 10:20:09,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,545 INFO L138 Inliner]: procedures = 27, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 532 [2023-12-24 10:20:09,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 10:20:09,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 10:20:09,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 10:20:09,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 10:20:09,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,584 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 10:20:09,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 10:20:09,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 10:20:09,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 10:20:09,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 10:20:09,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (1/1) ... [2023-12-24 10:20:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 10:20:09,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 10:20:09,705 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 10:20:09,773 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 10:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 10:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 10:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 10:20:09,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 10:20:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 10:20:09,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 10:20:09,893 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 10:20:09,899 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 10:20:39,087 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 10:20:39,143 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 10:20:39,143 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 10:20:39,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:20:39 BoogieIcfgContainer [2023-12-24 10:20:39,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 10:20:39,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 10:20:39,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 10:20:39,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 10:20:39,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:20:08" (1/3) ... [2023-12-24 10:20:39,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4748b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:20:39, skipping insertion in model container [2023-12-24 10:20:39,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:20:09" (2/3) ... [2023-12-24 10:20:39,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4748b3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:20:39, skipping insertion in model container [2023-12-24 10:20:39,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:20:39" (3/3) ... [2023-12-24 10:20:39,151 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-98.i [2023-12-24 10:20:39,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 10:20:39,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 10:20:39,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 10:20:39,217 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;@12010886, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 10:20:39,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 10:20:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 148 states have (on average 1.5810810810810811) internal successors, (234), 149 states have internal predecessors, (234), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 10:20:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:20:39,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:20:39,245 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:39,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:20:39,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:20:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1643560241, now seen corresponding path program 1 times [2023-12-24 10:20:39,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:20:39,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451549464] [2023-12-24 10:20:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:20:39,266 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 10:20:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:20:39,268 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 10:20:39,326 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 10:20:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:20:41,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 10:20:41,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:20:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 2138 proven. 0 refuted. 0 times theorem prover too weak. 4474 trivial. 0 not checked. [2023-12-24 10:20:41,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:20:41,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:20:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451549464] [2023-12-24 10:20:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451549464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:20:41,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 10:20:41,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 10:20:41,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833274289] [2023-12-24 10:20:41,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:20:41,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 10:20:41,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:20:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 10:20:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 10:20:41,253 INFO L87 Difference]: Start difference. First operand has 209 states, 148 states have (on average 1.5810810810810811) internal successors, (234), 149 states have internal predecessors, (234), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-24 10:20:46,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:20:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:20:46,039 INFO L93 Difference]: Finished difference Result 415 states and 756 transitions. [2023-12-24 10:20:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 10:20:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 395 [2023-12-24 10:20:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:20:46,313 INFO L225 Difference]: With dead ends: 415 [2023-12-24 10:20:46,313 INFO L226 Difference]: Without dead ends: 207 [2023-12-24 10:20:46,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 394 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 10:20:46,318 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-24 10:20:46,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-12-24 10:20:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-24 10:20:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-24 10:20:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 147 states have (on average 1.5510204081632653) internal successors, (228), 147 states have internal predecessors, (228), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 10:20:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 344 transitions. [2023-12-24 10:20:46,380 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 344 transitions. Word has length 395 [2023-12-24 10:20:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:20:46,381 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 344 transitions. [2023-12-24 10:20:46,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-24 10:20:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 344 transitions. [2023-12-24 10:20:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:20:46,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:20:46,387 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:46,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 10:20:46,619 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 10:20:46,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:20:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:20:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1031807535, now seen corresponding path program 1 times [2023-12-24 10:20:46,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:20:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403334266] [2023-12-24 10:20:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:20:46,621 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 10:20:46,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:20:46,622 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 10:20:46,628 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 10:20:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:20:48,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 10:20:48,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:21:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-24 10:21:13,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:21:16,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:21:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403334266] [2023-12-24 10:21:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403334266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:21:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [630158366] [2023-12-24 10:21:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:21:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:21:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:21:16,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:21:16,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 10:21:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:21:18,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 10:21:18,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:21:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-24 10:21:18,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:21:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [630158366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:21:18,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:21:18,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 10:21:18,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053866311] [2023-12-24 10:21:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:21:18,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 10:21:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:21:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 10:21:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:21:18,735 INFO L87 Difference]: Start difference. First operand 207 states and 344 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:21:23,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:21:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:21:23,914 INFO L93 Difference]: Finished difference Result 538 states and 889 transitions. [2023-12-24 10:21:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 10:21:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 395 [2023-12-24 10:21:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:21:23,926 INFO L225 Difference]: With dead ends: 538 [2023-12-24 10:21:23,926 INFO L226 Difference]: Without dead ends: 332 [2023-12-24 10:21:23,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:21:23,928 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 331 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-24 10:21:23,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 737 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-12-24 10:21:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-24 10:21:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 207. [2023-12-24 10:21:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 147 states have (on average 1.5374149659863945) internal successors, (226), 147 states have internal predecessors, (226), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 10:21:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 342 transitions. [2023-12-24 10:21:23,947 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 342 transitions. Word has length 395 [2023-12-24 10:21:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:21:23,949 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 342 transitions. [2023-12-24 10:21:23,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:21:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 342 transitions. [2023-12-24 10:21:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:21:23,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:21:23,954 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:23,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-24 10:21:24,214 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 10:21:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 10:21:24,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:21:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:21:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -339999763, now seen corresponding path program 1 times [2023-12-24 10:21:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:21:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854747788] [2023-12-24 10:21:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:21:24,386 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 10:21:24,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:21:24,387 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 10:21:24,396 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 10:21:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:21:26,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 10:21:26,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:21:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-24 10:21:52,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:21:55,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:21:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854747788] [2023-12-24 10:21:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854747788] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:21:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1921616654] [2023-12-24 10:21:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:21:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:21:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:21:55,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:21:55,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 10:21:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:21:56,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 10:21:56,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:21:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-24 10:21:57,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:21:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1921616654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:21:57,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:21:57,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 10:21:57,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229553653] [2023-12-24 10:21:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:21:57,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 10:21:57,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:21:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 10:21:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:21:57,205 INFO L87 Difference]: Start difference. First operand 207 states and 342 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:21:58,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:22:03,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:22:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:22:11,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:22:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:22:11,978 INFO L93 Difference]: Finished difference Result 600 states and 988 transitions. [2023-12-24 10:22:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 10:22:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 395 [2023-12-24 10:22:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:22:11,982 INFO L225 Difference]: With dead ends: 600 [2023-12-24 10:22:11,982 INFO L226 Difference]: Without dead ends: 394 [2023-12-24 10:22:11,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:22:11,984 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 309 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-24 10:22:11,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 929 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2023-12-24 10:22:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-24 10:22:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 224. [2023-12-24 10:22:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-24 10:22:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 364 transitions. [2023-12-24 10:22:12,015 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 364 transitions. Word has length 395 [2023-12-24 10:22:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:22:12,015 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 364 transitions. [2023-12-24 10:22:12,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:22:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 364 transitions. [2023-12-24 10:22:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:22:12,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:22:12,018 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:12,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 10:22:12,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 10:22:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:22:12,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:22:12,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:22:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1912189845, now seen corresponding path program 1 times [2023-12-24 10:22:12,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:22:12,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401876021] [2023-12-24 10:22:12,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:22:12,448 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 10:22:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:22:12,457 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 10:22:12,458 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 10:22:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:22:14,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 10:22:14,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:22:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-24 10:22:41,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:22:44,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:22:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401876021] [2023-12-24 10:22:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401876021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:22:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [836680911] [2023-12-24 10:22:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:22:44,768 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:22:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:22:44,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:22:44,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 10:22:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:22:45,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 10:22:45,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:22:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-24 10:22:46,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:22:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [836680911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:22:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:22:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 10:22:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343763809] [2023-12-24 10:22:46,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:22:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 10:22:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:22:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 10:22:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:22:46,213 INFO L87 Difference]: Start difference. First operand 224 states and 364 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:22:52,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:22:56,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:23:00,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:23:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:23:01,962 INFO L93 Difference]: Finished difference Result 668 states and 1086 transitions. [2023-12-24 10:23:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 10:23:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 395 [2023-12-24 10:23:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:23:01,987 INFO L225 Difference]: With dead ends: 668 [2023-12-24 10:23:01,987 INFO L226 Difference]: Without dead ends: 445 [2023-12-24 10:23:01,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 10:23:01,988 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 325 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-24 10:23:01,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 970 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-12-24 10:23:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-24 10:23:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 441. [2023-12-24 10:23:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 322 states have (on average 1.5) internal successors, (483), 322 states have internal predecessors, (483), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 10:23:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 715 transitions. [2023-12-24 10:23:02,030 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 715 transitions. Word has length 395 [2023-12-24 10:23:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:23:02,032 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 715 transitions. [2023-12-24 10:23:02,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:23:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 715 transitions. [2023-12-24 10:23:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:23:02,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:23:02,036 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:02,080 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 10:23:02,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 10:23:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:23:02,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:23:02,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:23:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash 81845419, now seen corresponding path program 1 times [2023-12-24 10:23:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:23:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455353250] [2023-12-24 10:23:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:23:02,461 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 10:23:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:23:02,462 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 10:23:02,463 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 10:23:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:23:04,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 10:23:04,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:23:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-24 10:23:31,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:23:35,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:23:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455353250] [2023-12-24 10:23:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455353250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:23:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079537986] [2023-12-24 10:23:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:23:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:23:35,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:23:35,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:23:35,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 10:23:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:23:36,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 10:23:36,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:23:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2023-12-24 10:23:38,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:23:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1079537986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:23:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:23:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-24 10:23:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739367665] [2023-12-24 10:23:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:23:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 10:23:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:23:38,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 10:23:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-24 10:23:38,641 INFO L87 Difference]: Start difference. First operand 441 states and 715 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:23:46,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:23:50,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:23:54,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:23:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:23:55,388 INFO L93 Difference]: Finished difference Result 1261 states and 2033 transitions. [2023-12-24 10:23:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 10:23:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 395 [2023-12-24 10:23:55,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:23:55,393 INFO L225 Difference]: With dead ends: 1261 [2023-12-24 10:23:55,393 INFO L226 Difference]: Without dead ends: 821 [2023-12-24 10:23:55,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 10:23:55,399 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 568 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 65 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-12-24 10:23:55,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 841 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 169 Invalid, 3 Unknown, 0 Unchecked, 16.5s Time] [2023-12-24 10:23:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-24 10:23:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 637. [2023-12-24 10:23:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 516 states have (on average 1.5251937984496124) internal successors, (787), 516 states have internal predecessors, (787), 116 states have call successors, (116), 4 states have call predecessors, (116), 4 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-24 10:23:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1019 transitions. [2023-12-24 10:23:55,436 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1019 transitions. Word has length 395 [2023-12-24 10:23:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:23:55,439 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1019 transitions. [2023-12-24 10:23:55,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2023-12-24 10:23:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1019 transitions. [2023-12-24 10:23:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:23:55,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:23:55,443 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:55,491 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 (9)] Ended with exit code 0 [2023-12-24 10:23:55,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 10:23:55,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:23:55,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:23:55,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:23:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -504960595, now seen corresponding path program 1 times [2023-12-24 10:23:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:23:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627312710] [2023-12-24 10:23:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:23:55,858 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 10:23:55,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:23:55,860 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 10:23:55,861 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 10:23:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:23:57,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 10:23:57,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:24:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 711 proven. 162 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-24 10:24:25,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:24:28,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:24:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627312710] [2023-12-24 10:24:28,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627312710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:24:28,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1967587874] [2023-12-24 10:24:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:24:28,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:24:28,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:24:28,866 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:24:28,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 10:24:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:24:32,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 10:24:32,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:24:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3363 proven. 84 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2023-12-24 10:24:39,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:24:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 87 proven. 84 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-24 10:24:43,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1967587874] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 10:24:43,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-24 10:24:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-12-24 10:24:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681899252] [2023-12-24 10:24:43,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-24 10:24:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 10:24:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:24:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 10:24:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-24 10:24:43,910 INFO L87 Difference]: Start difference. First operand 637 states and 1019 transitions. Second operand has 13 states, 13 states have (on average 16.846153846153847) internal successors, (219), 13 states have internal predecessors, (219), 4 states have call successors, (144), 4 states have call predecessors, (144), 7 states have return successors, (145), 4 states have call predecessors, (145), 4 states have call successors, (145) [2023-12-24 10:25:07,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:11,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:15,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:19,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:24,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:28,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:32,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:46,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:50,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:54,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:25:58,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:02,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:06,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:10,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:14,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:18,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:26:18,929 INFO L93 Difference]: Finished difference Result 1752 states and 2787 transitions. [2023-12-24 10:26:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 10:26:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.846153846153847) internal successors, (219), 13 states have internal predecessors, (219), 4 states have call successors, (144), 4 states have call predecessors, (144), 7 states have return successors, (145), 4 states have call predecessors, (145), 4 states have call successors, (145) Word has length 395 [2023-12-24 10:26:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:26:18,934 INFO L225 Difference]: With dead ends: 1752 [2023-12-24 10:26:18,934 INFO L226 Difference]: Without dead ends: 1110 [2023-12-24 10:26:18,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1541 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 10:26:18,936 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1478 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 139 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.8s IncrementalHoareTripleChecker+Time [2023-12-24 10:26:18,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1776 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1223 Invalid, 16 Unknown, 0 Unchecked, 89.8s Time] [2023-12-24 10:26:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2023-12-24 10:26:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 712. [2023-12-24 10:26:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 527 states have (on average 1.459203036053131) internal successors, (769), 527 states have internal predecessors, (769), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-24 10:26:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1117 transitions. [2023-12-24 10:26:18,977 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1117 transitions. Word has length 395 [2023-12-24 10:26:18,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:26:18,979 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1117 transitions. [2023-12-24 10:26:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.846153846153847) internal successors, (219), 13 states have internal predecessors, (219), 4 states have call successors, (144), 4 states have call predecessors, (144), 7 states have return successors, (145), 4 states have call predecessors, (145), 4 states have call successors, (145) [2023-12-24 10:26:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1117 transitions. [2023-12-24 10:26:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:26:18,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:26:18,982 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:19,050 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 10:26:19,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 10:26:19,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:26:19,404 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:26:19,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:26:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1060940183, now seen corresponding path program 1 times [2023-12-24 10:26:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:26:19,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803391989] [2023-12-24 10:26:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:26:19,406 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 10:26:19,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:26:19,420 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 10:26:19,422 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 10:26:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:26:21,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 10:26:21,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:26:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3363 proven. 84 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2023-12-24 10:26:26,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:26:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 87 proven. 84 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-24 10:26:29,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:26:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803391989] [2023-12-24 10:26:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803391989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 10:26:29,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 10:26:29,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 10:26:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184497174] [2023-12-24 10:26:29,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 10:26:29,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 10:26:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:26:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 10:26:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 10:26:29,696 INFO L87 Difference]: Start difference. First operand 712 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-24 10:26:37,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:42,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:46,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:50,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:26:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:26:53,147 INFO L93 Difference]: Finished difference Result 1180 states and 1851 transitions. [2023-12-24 10:26:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 10:26:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 395 [2023-12-24 10:26:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:26:53,150 INFO L225 Difference]: With dead ends: 1180 [2023-12-24 10:26:53,150 INFO L226 Difference]: Without dead ends: 582 [2023-12-24 10:26:53,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 782 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-24 10:26:53,151 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 617 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 183 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-12-24 10:26:53,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 722 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 433 Invalid, 3 Unknown, 0 Unchecked, 22.4s Time] [2023-12-24 10:26:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-24 10:26:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2023-12-24 10:26:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 385 states have (on average 1.405194805194805) internal successors, (541), 385 states have internal predecessors, (541), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-24 10:26:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 889 transitions. [2023-12-24 10:26:53,201 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 889 transitions. Word has length 395 [2023-12-24 10:26:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:26:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 889 transitions. [2023-12-24 10:26:53,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-24 10:26:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 889 transitions. [2023-12-24 10:26:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-24 10:26:53,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:26:53,204 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:53,260 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 10:26:53,429 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 10:26:53,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:26:53,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:26:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1320019673, now seen corresponding path program 1 times [2023-12-24 10:26:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:26:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250554708] [2023-12-24 10:26:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:26:53,432 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 10:26:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:26:53,433 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 10:26:53,468 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 10:26:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:26:55,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 10:26:55,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:26:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 2661 proven. 45 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2023-12-24 10:26:59,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:27:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2023-12-24 10:27:02,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:27:02,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250554708] [2023-12-24 10:27:02,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250554708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 10:27:02,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 10:27:02,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-24 10:27:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019422740] [2023-12-24 10:27:02,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 10:27:02,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 10:27:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:27:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 10:27:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-24 10:27:02,033 INFO L87 Difference]: Start difference. First operand 570 states and 889 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-12-24 10:27:14,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:27:18,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:27:22,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:27:26,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:27:30,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:27:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:27:30,123 INFO L93 Difference]: Finished difference Result 1050 states and 1628 transitions. [2023-12-24 10:27:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 10:27:30,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) Word has length 395 [2023-12-24 10:27:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:27:30,504 INFO L225 Difference]: With dead ends: 1050 [2023-12-24 10:27:30,504 INFO L226 Difference]: Without dead ends: 594 [2023-12-24 10:27:30,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-24 10:27:30,505 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 648 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 92 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2023-12-24 10:27:30,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 772 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 445 Invalid, 5 Unknown, 0 Unchecked, 27.5s Time] [2023-12-24 10:27:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-24 10:27:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 582. [2023-12-24 10:27:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 394 states have (on average 1.3908629441624365) internal successors, (548), 394 states have internal predecessors, (548), 174 states have call successors, (174), 13 states have call predecessors, (174), 13 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-24 10:27:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 896 transitions. [2023-12-24 10:27:30,535 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 896 transitions. Word has length 395 [2023-12-24 10:27:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:27:30,536 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 896 transitions. [2023-12-24 10:27:30,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 3 states have call successors, (73), 2 states have call predecessors, (73), 4 states have return successors, (74), 3 states have call predecessors, (74), 3 states have call successors, (74) [2023-12-24 10:27:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 896 transitions. [2023-12-24 10:27:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-24 10:27:30,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:27:30,538 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:30,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 10:27:30,752 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 10:27:30,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:27:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:27:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash 186048190, now seen corresponding path program 1 times [2023-12-24 10:27:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:27:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63118177] [2023-12-24 10:27:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:27:30,768 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 10:27:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:27:30,769 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 10:27:30,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 10:27:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:27:32,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 10:27:32,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:28:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4313 proven. 378 refuted. 0 times theorem prover too weak. 1921 trivial. 0 not checked. [2023-12-24 10:28:06,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:28:15,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:28:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63118177] [2023-12-24 10:28:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63118177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:28:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [650964171] [2023-12-24 10:28:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:28:15,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:28:15,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:28:15,050 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:28:15,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 10:28:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:28:19,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 10:28:19,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:28:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3437 proven. 213 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2023-12-24 10:28:51,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:29:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [650964171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:29:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 10:29:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2023-12-24 10:29:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073235368] [2023-12-24 10:29:00,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 10:29:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 10:29:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:29:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 10:29:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2023-12-24 10:29:00,432 INFO L87 Difference]: Start difference. First operand 582 states and 896 transitions. Second operand has 24 states, 24 states have (on average 8.5) internal successors, (204), 23 states have internal predecessors, (204), 8 states have call successors, (116), 8 states have call predecessors, (116), 12 states have return successors, (116), 8 states have call predecessors, (116), 8 states have call successors, (116) [2023-12-24 10:29:56,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:29:57,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:07,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:11,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:15,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:19,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:23,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:27,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:31,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:35,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:39,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:43,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:47,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:51,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:55,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:30:59,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:03,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:19,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:25,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:29,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:33,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:37,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:41,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:45,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:49,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:53,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:31:57,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:01,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:05,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:09,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:13,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:17,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:21,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:25,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:29,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:33,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 10:32:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:32:33,687 INFO L93 Difference]: Finished difference Result 1280 states and 1922 transitions. [2023-12-24 10:32:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 10:32:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.5) internal successors, (204), 23 states have internal predecessors, (204), 8 states have call successors, (116), 8 states have call predecessors, (116), 12 states have return successors, (116), 8 states have call predecessors, (116), 8 states have call successors, (116) Word has length 396 [2023-12-24 10:32:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:32:33,692 INFO L225 Difference]: With dead ends: 1280 [2023-12-24 10:32:33,692 INFO L226 Difference]: Without dead ends: 816 [2023-12-24 10:32:33,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=1007, Invalid=4395, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 10:32:33,695 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1650 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 449 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.4s IncrementalHoareTripleChecker+Time [2023-12-24 10:32:33,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 2399 Invalid, 3178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [449 Valid, 2696 Invalid, 33 Unknown, 0 Unchecked, 193.4s Time] [2023-12-24 10:32:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-24 10:32:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 662. [2023-12-24 10:32:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 458 states have (on average 1.3537117903930131) internal successors, (620), 458 states have internal predecessors, (620), 174 states have call successors, (174), 29 states have call predecessors, (174), 29 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-24 10:32:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 968 transitions. [2023-12-24 10:32:33,756 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 968 transitions. Word has length 396 [2023-12-24 10:32:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:32:33,756 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 968 transitions. [2023-12-24 10:32:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.5) internal successors, (204), 23 states have internal predecessors, (204), 8 states have call successors, (116), 8 states have call predecessors, (116), 12 states have return successors, (116), 8 states have call predecessors, (116), 8 states have call successors, (116) [2023-12-24 10:32:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 968 transitions. [2023-12-24 10:32:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-24 10:32:33,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:32:33,759 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:32:33,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 10:32:34,021 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 10:32:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:32:34,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:32:34,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:32:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -146738370, now seen corresponding path program 1 times [2023-12-24 10:32:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:32:34,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879072080] [2023-12-24 10:32:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:32:34,177 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 10:32:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:32:34,178 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 10:32:34,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 10:32:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:32:36,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 10:32:36,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:34:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3439 proven. 777 refuted. 0 times theorem prover too weak. 2396 trivial. 0 not checked. [2023-12-24 10:34:26,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-24 10:34:47,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 10:34:47,389 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 10:34:47,389 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 10:34:47,412 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 10:34:47,566 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 10:34:47,566 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 397 with TraceHistMax 58,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. [2023-12-24 10:34:47,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:34:47,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 10:34:47,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:34:47 BoogieIcfgContainer [2023-12-24 10:34:47,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 10:34:47,575 INFO L158 Benchmark]: Toolchain (without parser) took 878586.31ms. Allocated memory was 254.8MB in the beginning and 380.6MB in the end (delta: 125.8MB). Free memory was 207.0MB in the beginning and 150.9MB in the end (delta: 56.1MB). Peak memory consumption was 183.2MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 166.7MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.32ms. Allocated memory is still 254.8MB. Free memory was 207.0MB in the beginning and 169.8MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.08ms. Allocated memory is still 254.8MB. Free memory was 169.8MB in the beginning and 162.9MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: Boogie Preprocessor took 75.54ms. Allocated memory is still 254.8MB. Free memory was 162.9MB in the beginning and 138.8MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: RCFGBuilder took 29491.74ms. Allocated memory is still 254.8MB. Free memory was 218.6MB in the beginning and 135.8MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,575 INFO L158 Benchmark]: TraceAbstraction took 848428.31ms. Allocated memory was 254.8MB in the beginning and 380.6MB in the end (delta: 125.8MB). Free memory was 135.3MB in the beginning and 150.9MB in the end (delta: -15.6MB). Peak memory consumption was 110.5MB. Max. memory is 8.0GB. [2023-12-24 10:34:47,576 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 166.7MB. Free memory is still 110.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 497.32ms. Allocated memory is still 254.8MB. Free memory was 207.0MB in the beginning and 169.8MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.08ms. Allocated memory is still 254.8MB. Free memory was 169.8MB in the beginning and 162.9MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.54ms. Allocated memory is still 254.8MB. Free memory was 162.9MB in the beginning and 138.8MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * RCFGBuilder took 29491.74ms. Allocated memory is still 254.8MB. Free memory was 218.6MB in the beginning and 135.8MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * TraceAbstraction took 848428.31ms. Allocated memory was 254.8MB in the beginning and 380.6MB in the end (delta: 125.8MB). Free memory was 135.3MB in the beginning and 150.9MB in the end (delta: -15.6MB). Peak memory consumption was 110.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 397 with TraceHistMax 58,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 209 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.4s, OverallIterations: 10, TraceHistogramMax: 58, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 417.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 mSolverCounterUnknown, 6028 SdHoareTripleChecker+Valid, 390.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5926 mSDsluCounter, 9487 SdHoareTripleChecker+Invalid, 384.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5845 mSDsCounter, 943 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5026 IncrementalHoareTripleChecker+Invalid, 6037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 943 mSolverCounterUnsat, 3642 mSDtfsCounter, 5026 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9373 GetRequests, 9200 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 50.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=712occurred in iteration=6, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 27.0s SatisfiabilityAnalysisTime, 264.6s InterpolantComputationTime, 5927 NumberOfCodeBlocks, 5927 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 7094 ConstructedInterpolants, 9 QuantifiedInterpolants, 34498 SizeOfPredicates, 60 NumberOfNonLiveVariables, 10487 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 117189/119016 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown