/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-24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:26:53,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:26:53,752 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 09:26:53,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:26:53,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:26:53,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:26:53,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:26:53,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:26:53,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:26:53,786 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:26:53,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:26:53,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:26:53,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:26:53,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:26:53,787 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:26:53,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:26:53,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:26:53,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:26:53,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:26:53,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:26:53,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:26:53,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:26:53,790 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:26:53,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:26:53,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:26:53,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:26:53,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:26:53,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:26:53,792 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:26:53,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:26:53,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:26:53,792 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:26:53,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:26:53,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:26:53,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:26:53,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:26:53,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:26:53,974 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:26:53,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-24.i [2023-12-24 09:26:54,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:26:55,162 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:26:55,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-24.i [2023-12-24 09:26:55,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ef457e1/ac26fe7f020a401e8c4d01697deabc38/FLAG0511a5fa2 [2023-12-24 09:26:55,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ef457e1/ac26fe7f020a401e8c4d01697deabc38 [2023-12-24 09:26:55,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:26:55,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:26:55,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:26:55,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:26:55,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:26:55,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c8a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55, skipping insertion in model container [2023-12-24 09:26:55,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,255 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:26:55,356 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-24.i[916,929] [2023-12-24 09:26:55,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:26:55,551 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:26:55,559 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-24.i[916,929] [2023-12-24 09:26:55,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:26:55,655 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:26:55,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55 WrapperNode [2023-12-24 09:26:55,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:26:55,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:26:55,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:26:55,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:26:55,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,722 INFO L138 Inliner]: procedures = 27, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 618 [2023-12-24 09:26:55,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:26:55,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:26:55,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:26:55,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:26:55,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,782 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 09:26:55,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:26:55,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:26:55,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:26:55,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:26:55,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (1/1) ... [2023-12-24 09:26:55,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:26:55,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:26:55,873 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 09:26:55,891 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 09:26:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:26:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:26:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:26:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:26:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:26:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:26:56,004 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:26:56,005 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:27:14,254 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:27:14,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:27:14,323 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:27:14,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:27:14 BoogieIcfgContainer [2023-12-24 09:27:14,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:27:14,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:27:14,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:27:14,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:27:14,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:26:55" (1/3) ... [2023-12-24 09:27:14,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be6979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:27:14, skipping insertion in model container [2023-12-24 09:27:14,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:26:55" (2/3) ... [2023-12-24 09:27:14,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be6979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:27:14, skipping insertion in model container [2023-12-24 09:27:14,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:27:14" (3/3) ... [2023-12-24 09:27:14,333 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-24.i [2023-12-24 09:27:14,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:27:14,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:27:14,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:27:14,394 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;@1aa99171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:27:14,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:27:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 168 states have (on average 1.5535714285714286) internal successors, (261), 169 states have internal predecessors, (261), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 09:27:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:27:14,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:27:14,429 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:14,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:27:14,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:27:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -16266457, now seen corresponding path program 1 times [2023-12-24 09:27:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:27:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634991167] [2023-12-24 09:27:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:27:14,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:27:14,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:27:14,451 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 09:27:14,468 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 (2)] Waiting until timeout for monitored process [2023-12-24 09:27:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:27:16,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:27:16,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:27:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 4190 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-12-24 09:27:16,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:27:16,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:27:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634991167] [2023-12-24 09:27:16,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634991167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:27:16,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:27:16,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:27:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582035246] [2023-12-24 09:27:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:27:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:27:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:27:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:27:16,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:27:16,197 INFO L87 Difference]: Start difference. First operand has 251 states, 168 states have (on average 1.5535714285714286) internal successors, (261), 169 states have internal predecessors, (261), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 09:27:21,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:27:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:27:21,012 INFO L93 Difference]: Finished difference Result 499 states and 920 transitions. [2023-12-24 09:27:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:27:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 521 [2023-12-24 09:27:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:27:21,381 INFO L225 Difference]: With dead ends: 499 [2023-12-24 09:27:21,381 INFO L226 Difference]: Without dead ends: 249 [2023-12-24 09:27:21,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 520 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 09:27:21,399 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:27:21,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 413 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 09:27:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-24 09:27:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-12-24 09:27:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 167 states have (on average 1.532934131736527) internal successors, (256), 167 states have internal predecessors, (256), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 09:27:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 416 transitions. [2023-12-24 09:27:21,466 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 416 transitions. Word has length 521 [2023-12-24 09:27:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:27:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 416 transitions. [2023-12-24 09:27:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 09:27:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 416 transitions. [2023-12-24 09:27:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:27:21,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:27:21,475 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:21,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 09:27:21,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:27:21,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:27:21,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:27:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1532473553, now seen corresponding path program 1 times [2023-12-24 09:27:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:27:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046325226] [2023-12-24 09:27:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:27:21,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:27:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:27:21,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:27:21,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 09:27:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:27:23,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:27:23,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:27:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:27:35,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:27:35,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:27:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046325226] [2023-12-24 09:27:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046325226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:27:35,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:27:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 09:27:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713408865] [2023-12-24 09:27:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:27:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:27:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:27:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:27:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 09:27:35,251 INFO L87 Difference]: Start difference. First operand 249 states and 416 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:27:41,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:27:46,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:27:50,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:27:56,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:00,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:05,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:09,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:13,616 WARN L539 Checker$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 09:28:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:28:13,881 INFO L93 Difference]: Finished difference Result 951 states and 1599 transitions. [2023-12-24 09:28:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 09:28:13,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:28:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:28:13,886 INFO L225 Difference]: With dead ends: 951 [2023-12-24 09:28:13,887 INFO L226 Difference]: Without dead ends: 703 [2023-12-24 09:28:13,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 09:28:13,891 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 732 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 181 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:28:13,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1310 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 38.5s Time] [2023-12-24 09:28:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-12-24 09:28:13,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 488. [2023-12-24 09:28:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 325 states have (on average 1.5107692307692309) internal successors, (491), 325 states have internal predecessors, (491), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-24 09:28:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 811 transitions. [2023-12-24 09:28:13,931 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 811 transitions. Word has length 521 [2023-12-24 09:28:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:28:13,932 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 811 transitions. [2023-12-24 09:28:13,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:28:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 811 transitions. [2023-12-24 09:28:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:28:13,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:28:13,936 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:28:13,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 09:28:14,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:28:14,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:28:14,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:28:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1394134575, now seen corresponding path program 1 times [2023-12-24 09:28:14,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:28:14,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402659343] [2023-12-24 09:28:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:28:14,159 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 09:28:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:28:14,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:28:14,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 09:28:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:28:15,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:28:15,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:28:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6243 proven. 99 refuted. 0 times theorem prover too weak. 6298 trivial. 0 not checked. [2023-12-24 09:28:21,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:28:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 138 proven. 99 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-24 09:28:23,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:28:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402659343] [2023-12-24 09:28:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402659343] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:28:23,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:28:23,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 09:28:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817806876] [2023-12-24 09:28:23,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:28:23,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:28:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:28:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:28:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 09:28:23,602 INFO L87 Difference]: Start difference. First operand 488 states and 811 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-24 09:28:36,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:40,006 WARN L539 Checker$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 09:28:44,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:28:48,030 WARN L539 Checker$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 09:28:52,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:28:52,180 INFO L93 Difference]: Finished difference Result 811 states and 1334 transitions. [2023-12-24 09:28:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 09:28:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 521 [2023-12-24 09:28:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:28:52,187 INFO L225 Difference]: With dead ends: 811 [2023-12-24 09:28:52,187 INFO L226 Difference]: Without dead ends: 324 [2023-12-24 09:28:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1033 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:28:52,191 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 834 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 188 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:28:52,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1105 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 784 Invalid, 4 Unknown, 0 Unchecked, 27.9s Time] [2023-12-24 09:28:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-24 09:28:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2023-12-24 09:28:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 190 states have (on average 1.394736842105263) internal successors, (265), 191 states have internal predecessors, (265), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-24 09:28:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 517 transitions. [2023-12-24 09:28:52,233 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 517 transitions. Word has length 521 [2023-12-24 09:28:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:28:52,241 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 517 transitions. [2023-12-24 09:28:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2023-12-24 09:28:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 517 transitions. [2023-12-24 09:28:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:28:52,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:28:52,244 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:28:52,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 09:28:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:28:52,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:28:52,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:28:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash -553986577, now seen corresponding path program 1 times [2023-12-24 09:28:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:28:52,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100591920] [2023-12-24 09:28:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:28:52,447 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 09:28:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:28:52,448 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 09:28:52,449 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 09:28:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:28:54,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:28:54,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:29:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:29:14,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:29:17,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:29:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100591920] [2023-12-24 09:29:17,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100591920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:29:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204654745] [2023-12-24 09:29:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:29:17,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:29:17,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:29:17,933 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 09:29:17,935 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 09:29:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:29:19,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:29:19,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:29:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:29:20,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:29:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [204654745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:29:20,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:29:20,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:29:20,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759004569] [2023-12-24 09:29:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:29:20,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:29:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:29:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:29:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:29:20,747 INFO L87 Difference]: Start difference. First operand 319 states and 517 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:29:26,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:29:30,830 WARN L539 Checker$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 09:29:34,845 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 09:29:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:29:35,548 INFO L93 Difference]: Finished difference Result 795 states and 1290 transitions. [2023-12-24 09:29:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:29:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:29:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:29:35,561 INFO L225 Difference]: With dead ends: 795 [2023-12-24 09:29:35,562 INFO L226 Difference]: Without dead ends: 550 [2023-12-24 09:29:35,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:29:35,563 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 334 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:29:35,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1050 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2023-12-24 09:29:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-24 09:29:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 543. [2023-12-24 09:29:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 332 states have (on average 1.4096385542168675) internal successors, (468), 334 states have internal predecessors, (468), 206 states have call successors, (206), 4 states have call predecessors, (206), 4 states have return successors, (206), 204 states have call predecessors, (206), 206 states have call successors, (206) [2023-12-24 09:29:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 880 transitions. [2023-12-24 09:29:35,631 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 880 transitions. Word has length 521 [2023-12-24 09:29:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:29:35,632 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 880 transitions. [2023-12-24 09:29:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:29:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 880 transitions. [2023-12-24 09:29:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:29:35,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:29:35,636 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:35,687 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 09:29:35,851 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 09:29:36,040 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 09:29:36,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:29:36,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:29:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1779406061, now seen corresponding path program 1 times [2023-12-24 09:29:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:29:36,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479085374] [2023-12-24 09:29:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:29:36,043 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 09:29:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:29:36,044 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 09:29:36,046 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 09:29:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:29:37,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:29:37,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:29:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:29:58,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:30:02,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:30:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479085374] [2023-12-24 09:30:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479085374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:30:02,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255540232] [2023-12-24 09:30:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:30:02,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:30:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:30:02,248 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 09:30:02,249 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 09:30:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:30:03,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:30:03,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:30:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:30:04,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:30:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [255540232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:30:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:30:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:30:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288469620] [2023-12-24 09:30:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:30:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:30:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:30:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:30:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:30:04,050 INFO L87 Difference]: Start difference. First operand 543 states and 880 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:30:09,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:13,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:17,517 WARN L539 Checker$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 09:30:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:30:18,179 INFO L93 Difference]: Finished difference Result 1480 states and 2398 transitions. [2023-12-24 09:30:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:30:18,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:30:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:30:18,185 INFO L225 Difference]: With dead ends: 1480 [2023-12-24 09:30:18,185 INFO L226 Difference]: Without dead ends: 1011 [2023-12-24 09:30:18,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:30:18,187 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 386 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:30:18,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1095 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2023-12-24 09:30:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-24 09:30:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 836. [2023-12-24 09:30:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 543 states have (on average 1.441988950276243) internal successors, (783), 545 states have internal predecessors, (783), 286 states have call successors, (286), 6 states have call predecessors, (286), 6 states have return successors, (286), 284 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-24 09:30:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1355 transitions. [2023-12-24 09:30:18,255 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1355 transitions. Word has length 521 [2023-12-24 09:30:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:30:18,256 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1355 transitions. [2023-12-24 09:30:18,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:30:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1355 transitions. [2023-12-24 09:30:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:30:18,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:30:18,260 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:18,312 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 09:30:18,488 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 09:30:18,676 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 09:30:18,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:30:18,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:30:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1998260779, now seen corresponding path program 1 times [2023-12-24 09:30:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:30:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452072278] [2023-12-24 09:30:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:30:18,679 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 09:30:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:30:18,680 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 09:30:18,680 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 09:30:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:30:20,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:30:20,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:30:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:30:41,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:30:44,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:30:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452072278] [2023-12-24 09:30:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452072278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:30:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [355094525] [2023-12-24 09:30:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:30:44,764 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:30:44,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:30:44,765 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 09:30:44,766 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 09:30:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:30:46,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:30:46,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:30:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:30:46,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:30:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [355094525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:30:46,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:30:46,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:30:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164139278] [2023-12-24 09:30:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:30:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:30:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:30:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:30:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:30:46,465 INFO L87 Difference]: Start difference. First operand 836 states and 1355 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:30:51,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:30:55,543 WARN L539 Checker$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 09:30:59,558 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 09:31:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:31:00,000 INFO L93 Difference]: Finished difference Result 1601 states and 2593 transitions. [2023-12-24 09:31:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:31:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:31:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:31:00,006 INFO L225 Difference]: With dead ends: 1601 [2023-12-24 09:31:00,006 INFO L226 Difference]: Without dead ends: 839 [2023-12-24 09:31:00,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:31:00,009 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 388 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:31:00,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 770 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2023-12-24 09:31:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-24 09:31:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2023-12-24 09:31:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 544 states have (on average 1.4338235294117647) internal successors, (780), 546 states have internal predecessors, (780), 286 states have call successors, (286), 6 states have call predecessors, (286), 6 states have return successors, (286), 284 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-24 09:31:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1352 transitions. [2023-12-24 09:31:00,067 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1352 transitions. Word has length 521 [2023-12-24 09:31:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:31:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1352 transitions. [2023-12-24 09:31:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:31:00,069 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1352 transitions. [2023-12-24 09:31:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:31:00,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:31:00,072 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:00,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 09:31:00,307 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 09:31:00,496 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 09:31:00,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:31:00,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:31:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash -710122901, now seen corresponding path program 1 times [2023-12-24 09:31:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:31:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059961826] [2023-12-24 09:31:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:31:00,498 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 09:31:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:31:00,500 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 09:31:00,539 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 09:31:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:31:02,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:31:02,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:31:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:31:23,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:31:27,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:31:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059961826] [2023-12-24 09:31:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059961826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:31:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1340474681] [2023-12-24 09:31:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:31:27,153 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:31:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:31:27,154 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 09:31:27,159 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 09:31:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:31:28,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:31:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:31:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:31:32,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:31:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1340474681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:31:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:31:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-24 09:31:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948442442] [2023-12-24 09:31:32,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:31:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 09:31:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:31:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 09:31:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-24 09:31:32,137 INFO L87 Difference]: Start difference. First operand 837 states and 1352 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:31:39,103 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 09:31:43,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:48,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:52,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:31:56,417 WARN L539 Checker$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 09:31:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:31:59,534 INFO L93 Difference]: Finished difference Result 1507 states and 2419 transitions. [2023-12-24 09:31:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 09:31:59,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:31:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:31:59,538 INFO L225 Difference]: With dead ends: 1507 [2023-12-24 09:31:59,538 INFO L226 Difference]: Without dead ends: 744 [2023-12-24 09:31:59,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1425 GetRequests, 1409 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-12-24 09:31:59,541 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 876 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 187 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:31:59,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1853 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 176 Invalid, 5 Unknown, 0 Unchecked, 26.0s Time] [2023-12-24 09:31:59,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-24 09:31:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 677. [2023-12-24 09:31:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 462 states have (on average 1.4545454545454546) internal successors, (672), 463 states have internal predecessors, (672), 207 states have call successors, (207), 7 states have call predecessors, (207), 7 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-24 09:31:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1086 transitions. [2023-12-24 09:31:59,576 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1086 transitions. Word has length 521 [2023-12-24 09:31:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:31:59,577 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1086 transitions. [2023-12-24 09:31:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:31:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1086 transitions. [2023-12-24 09:31:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-24 09:31:59,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:31:59,580 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:31:59,624 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 09:31:59,808 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 09:31:59,996 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 09:31:59,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:31:59,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:31:59,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1864247273, now seen corresponding path program 1 times [2023-12-24 09:31:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:31:59,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030925556] [2023-12-24 09:31:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:31:59,998 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 09:31:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:32:00,000 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 09:32:00,005 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 09:32:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:32:01,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:32:01,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:32:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:32:22,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:32:26,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:32:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030925556] [2023-12-24 09:32:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030925556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:32:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925119834] [2023-12-24 09:32:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:32:26,009 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:32:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:32:26,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:32:26,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 09:32:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:32:30,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:32:30,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:32:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-24 09:32:44,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:32:44,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925119834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:32:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:32:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:32:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35190656] [2023-12-24 09:32:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:32:44,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:32:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:32:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:32:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:32:44,614 INFO L87 Difference]: Start difference. First operand 677 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:32:50,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:54,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:55,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:32:59,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:03,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:08,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:12,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:33:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:33:13,666 INFO L93 Difference]: Finished difference Result 1394 states and 2238 transitions. [2023-12-24 09:33:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:33:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 521 [2023-12-24 09:33:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:33:13,681 INFO L225 Difference]: With dead ends: 1394 [2023-12-24 09:33:13,681 INFO L226 Difference]: Without dead ends: 797 [2023-12-24 09:33:13,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1409 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:33:13,684 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 476 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:33:13,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 688 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 2 Unknown, 0 Unchecked, 29.0s Time] [2023-12-24 09:33:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2023-12-24 09:33:13,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 677. [2023-12-24 09:33:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 462 states have (on average 1.4502164502164503) internal successors, (670), 463 states have internal predecessors, (670), 207 states have call successors, (207), 7 states have call predecessors, (207), 7 states have return successors, (207), 206 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-24 09:33:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1084 transitions. [2023-12-24 09:33:13,722 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1084 transitions. Word has length 521 [2023-12-24 09:33:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:33:13,723 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1084 transitions. [2023-12-24 09:33:13,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-24 09:33:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1084 transitions. [2023-12-24 09:33:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-24 09:33:13,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:33:13,726 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:13,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 09:33:13,994 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 09:33:14,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:33:14,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:33:14,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:33:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1262730020, now seen corresponding path program 1 times [2023-12-24 09:33:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:33:14,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16428744] [2023-12-24 09:33:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:14,146 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 09:33:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:33:14,148 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 09:33:14,176 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 09:33:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:15,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:33:15,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:33:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:33:36,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:33:40,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:33:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16428744] [2023-12-24 09:33:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16428744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:33:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213555185] [2023-12-24 09:33:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:33:40,228 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:33:40,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:33:40,229 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 09:33:40,230 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 09:33:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:33:46,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 09:33:46,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:34:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5407 proven. 165 refuted. 0 times theorem prover too weak. 7068 trivial. 0 not checked. [2023-12-24 09:34:07,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:34:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213555185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:34:10,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:34:10,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-24 09:34:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741768064] [2023-12-24 09:34:10,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:34:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:34:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:34:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:34:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:34:10,287 INFO L87 Difference]: Start difference. First operand 677 states and 1084 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 09:34:25,400 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 [] [2023-12-24 09:34:29,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:33,416 WARN L539 Checker$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 09:34:37,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:41,438 WARN L539 Checker$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 09:34:47,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:51,775 WARN L539 Checker$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 09:34:55,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:59,786 WARN L539 Checker$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 09:35:03,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:07,797 WARN L539 Checker$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 09:35:11,811 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 09:35:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:35:11,813 INFO L93 Difference]: Finished difference Result 1540 states and 2464 transitions. [2023-12-24 09:35:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 09:35:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 522 [2023-12-24 09:35:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:35:12,136 INFO L225 Difference]: With dead ends: 1540 [2023-12-24 09:35:12,136 INFO L226 Difference]: Without dead ends: 943 [2023-12-24 09:35:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1812 GetRequests, 1795 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-12-24 09:35:12,139 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 403 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 225 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:35:12,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2100 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 652 Invalid, 12 Unknown, 0 Unchecked, 60.0s Time] [2023-12-24 09:35:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-12-24 09:35:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 919. [2023-12-24 09:35:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 669 states have (on average 1.4828101644245142) internal successors, (992), 669 states have internal predecessors, (992), 240 states have call successors, (240), 9 states have call predecessors, (240), 9 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 09:35:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1472 transitions. [2023-12-24 09:35:12,202 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1472 transitions. Word has length 522 [2023-12-24 09:35:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:35:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1472 transitions. [2023-12-24 09:35:12,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-24 09:35:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1472 transitions. [2023-12-24 09:35:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-24 09:35:12,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:35:12,206 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:12,236 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 09:35:12,474 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 09:35:12,624 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 09:35:12,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:35:12,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:35:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash -811769627, now seen corresponding path program 1 times [2023-12-24 09:35:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:35:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309408070] [2023-12-24 09:35:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:12,626 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 09:35:12,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:35:12,628 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 09:35:12,631 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 09:35:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:14,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 09:35:14,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5893 proven. 84 refuted. 0 times theorem prover too weak. 6663 trivial. 0 not checked. [2023-12-24 09:35:19,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:35:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 153 proven. 84 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-24 09:35:22,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:35:22,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309408070] [2023-12-24 09:35:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309408070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:35:22,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:35:22,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 09:35:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116983414] [2023-12-24 09:35:22,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:35:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 09:35:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:35:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 09:35:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 09:35:22,360 INFO L87 Difference]: Start difference. First operand 919 states and 1472 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-24 09:35:33,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:37,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:41,333 WARN L539 Checker$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 09:35:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:35:41,731 INFO L93 Difference]: Finished difference Result 1688 states and 2689 transitions. [2023-12-24 09:35:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 09:35:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 523 [2023-12-24 09:35:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:35:41,736 INFO L225 Difference]: With dead ends: 1688 [2023-12-24 09:35:41,736 INFO L226 Difference]: Without dead ends: 949 [2023-12-24 09:35:41,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1038 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:35:41,738 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 432 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 118 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:35:41,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 750 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 411 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2023-12-24 09:35:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-24 09:35:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 931. [2023-12-24 09:35:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 678 states have (on average 1.4616519174041298) internal successors, (991), 678 states have internal predecessors, (991), 240 states have call successors, (240), 12 states have call predecessors, (240), 12 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 09:35:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1471 transitions. [2023-12-24 09:35:41,785 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1471 transitions. Word has length 523 [2023-12-24 09:35:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:35:41,785 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1471 transitions. [2023-12-24 09:35:41,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-24 09:35:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1471 transitions. [2023-12-24 09:35:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-24 09:35:41,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:35:41,789 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:41,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-24 09:35:42,000 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 09:35:42,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:35:42,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:35:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 726570403, now seen corresponding path program 1 times [2023-12-24 09:35:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:35:42,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144922137] [2023-12-24 09:35:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:42,002 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 09:35:42,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:35:42,003 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:35:42,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 09:35:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:44,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 09:35:44,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:36:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2566 proven. 630 refuted. 0 times theorem prover too weak. 9444 trivial. 0 not checked. [2023-12-24 09:36:19,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:36:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 27 proven. 210 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-24 09:36:39,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:36:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144922137] [2023-12-24 09:36:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144922137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:36:39,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:36:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2023-12-24 09:36:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093040513] [2023-12-24 09:36:39,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:36:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 09:36:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:36:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 09:36:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-24 09:36:39,219 INFO L87 Difference]: Start difference. First operand 931 states and 1471 transitions. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 5 states have call successors, (154), 4 states have call predecessors, (154), 7 states have return successors, (155), 5 states have call predecessors, (155), 5 states have call successors, (155) [2023-12-24 09:37:06,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:12,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:16,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:20,086 WARN L539 Checker$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 09:37:24,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:28,103 WARN L539 Checker$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 09:37:32,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:36,125 WARN L539 Checker$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 09:37:40,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:44,135 WARN L539 Checker$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 09:37:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:37:44,629 INFO L93 Difference]: Finished difference Result 1781 states and 2765 transitions. [2023-12-24 09:37:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 09:37:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 5 states have call successors, (154), 4 states have call predecessors, (154), 7 states have return successors, (155), 5 states have call predecessors, (155), 5 states have call successors, (155) Word has length 523 [2023-12-24 09:37:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:37:44,635 INFO L225 Difference]: With dead ends: 1781 [2023-12-24 09:37:44,636 INFO L226 Difference]: Without dead ends: 1009 [2023-12-24 09:37:44,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2023-12-24 09:37:44,638 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 551 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 82 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:37:44,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 810 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 889 Invalid, 9 Unknown, 0 Unchecked, 59.1s Time] [2023-12-24 09:37:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-24 09:37:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 979. [2023-12-24 09:37:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 714 states have internal predecessors, (1024), 240 states have call successors, (240), 24 states have call predecessors, (240), 24 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-24 09:37:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1504 transitions. [2023-12-24 09:37:44,719 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1504 transitions. Word has length 523 [2023-12-24 09:37:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:37:44,719 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1504 transitions. [2023-12-24 09:37:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 5 states have call successors, (154), 4 states have call predecessors, (154), 7 states have return successors, (155), 5 states have call predecessors, (155), 5 states have call successors, (155) [2023-12-24 09:37:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1504 transitions. [2023-12-24 09:37:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-24 09:37:44,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:37:44,723 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:44,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 09:37:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:37:44,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:37:44,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:37:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 309173797, now seen corresponding path program 1 times [2023-12-24 09:37:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:37:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229371778] [2023-12-24 09:37:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:37:44,938 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 09:37:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:37:44,939 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:37:44,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 09:37:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:37:47,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 09:37:47,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:40:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5908 proven. 603 refuted. 0 times theorem prover too weak. 6129 trivial. 0 not checked. [2023-12-24 09:40:13,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-24 09:41:25,188 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 09:41:25,210 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 (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:41:25,292 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:41:25,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 09:41:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:41:25,493 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 524 with TraceHistMax 80,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-2-1 context. [2023-12-24 09:41:25,497 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:41:25,499 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:41:25,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:41:25 BoogieIcfgContainer [2023-12-24 09:41:25,500 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:41:25,501 INFO L158 Benchmark]: Toolchain (without parser) took 870305.63ms. Allocated memory is still 303.0MB. Free memory was 262.2MB in the beginning and 200.8MB in the end (delta: 61.4MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-12-24 09:41:25,501 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 200.3MB. Free memory was 154.6MB in the beginning and 154.5MB in the end (delta: 164.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:41:25,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.23ms. Allocated memory is still 303.0MB. Free memory was 261.7MB in the beginning and 225.0MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-24 09:41:25,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.83ms. Allocated memory is still 303.0MB. Free memory was 225.0MB in the beginning and 218.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 09:41:25,501 INFO L158 Benchmark]: Boogie Preprocessor took 122.56ms. Allocated memory is still 303.0MB. Free memory was 218.2MB in the beginning and 263.8MB in the end (delta: -45.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. [2023-12-24 09:41:25,502 INFO L158 Benchmark]: RCFGBuilder took 18480.03ms. Allocated memory is still 303.0MB. Free memory was 263.8MB in the beginning and 179.9MB in the end (delta: 83.9MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2023-12-24 09:41:25,502 INFO L158 Benchmark]: TraceAbstraction took 851172.77ms. Allocated memory is still 303.0MB. Free memory was 179.4MB in the beginning and 200.8MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:41:25,502 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 200.3MB. Free memory was 154.6MB in the beginning and 154.5MB in the end (delta: 164.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 460.23ms. Allocated memory is still 303.0MB. Free memory was 261.7MB in the beginning and 225.0MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.83ms. Allocated memory is still 303.0MB. Free memory was 225.0MB in the beginning and 218.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 122.56ms. Allocated memory is still 303.0MB. Free memory was 218.2MB in the beginning and 263.8MB in the end (delta: -45.6MB). Peak memory consumption was 24.0MB. Max. memory is 8.0GB. * RCFGBuilder took 18480.03ms. Allocated memory is still 303.0MB. Free memory was 263.8MB in the beginning and 179.9MB in the end (delta: 83.9MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. * TraceAbstraction took 851172.77ms. Allocated memory is still 303.0MB. Free memory was 179.4MB in the beginning and 200.8MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 524 with TraceHistMax 80,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 851.1s, OverallIterations: 12, TraceHistogramMax: 80, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 318.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 mSolverCounterUnknown, 5514 SdHoareTripleChecker+Valid, 306.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5412 mSDsluCounter, 11944 SdHoareTripleChecker+Invalid, 299.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6756 mSDsCounter, 994 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3248 IncrementalHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 994 mSolverCounterUnsat, 5188 mSDtfsCounter, 3248 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13108 GetRequests, 12982 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 25.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=979occurred in iteration=11, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 663 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 33.8s SatisfiabilityAnalysisTime, 272.3s InterpolantComputationTime, 8863 NumberOfCodeBlocks, 8863 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10410 ConstructedInterpolants, 0 QuantifiedInterpolants, 37755 SizeOfPredicates, 53 NumberOfNonLiveVariables, 15073 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 250439/252800 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