/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-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:33:13,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:33:13,562 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 09:33:13,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:33:13,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:33:13,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:33:13,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:33:13,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:33:13,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:33:13,595 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:33:13,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:33:13,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:33:13,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:33:13,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:33:13,597 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:33:13,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:33:13,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:33:13,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:33:13,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:33:13,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:33:13,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:33:13,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:33:13,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:33:13,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:33:13,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:33:13,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:33:13,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:33:13,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:33:13,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:33:13,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:33:13,603 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:33:13,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:33:13,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:33:13,603 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:33:13,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:33:13,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:33:13,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:33:13,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:33:13,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:33:13,812 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:33:13,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-4.i [2023-12-24 09:33:14,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:33:15,064 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:33:15,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-4.i [2023-12-24 09:33:15,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3fc5168/ee776e1d22034ae0933c8f2caf390b43/FLAGeccfdb0d3 [2023-12-24 09:33:15,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3fc5168/ee776e1d22034ae0933c8f2caf390b43 [2023-12-24 09:33:15,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:33:15,102 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:33:15,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:33:15,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:33:15,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:33:15,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bfd106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15, skipping insertion in model container [2023-12-24 09:33:15,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:33:15,289 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-4.i[915,928] [2023-12-24 09:33:15,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:33:15,523 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:33:15,534 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-4.i[915,928] [2023-12-24 09:33:15,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:33:15,648 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:33:15,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15 WrapperNode [2023-12-24 09:33:15,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:33:15,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:33:15,649 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:33:15,649 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:33:15,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,725 INFO L138 Inliner]: procedures = 27, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 575 [2023-12-24 09:33:15,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:33:15,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:33:15,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:33:15,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:33:15,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,766 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 09:33:15,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:33:15,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:33:15,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:33:15,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:33:15,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (1/1) ... [2023-12-24 09:33:15,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:33:15,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:33:15,891 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 09:33:15,908 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 09:33:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:33:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:33:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:33:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:33:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:33:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:33:16,015 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:33:16,017 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:34:03,419 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:34:03,465 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:34:03,466 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:34:03,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:34:03 BoogieIcfgContainer [2023-12-24 09:34:03,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:34:03,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:34:03,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:34:03,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:34:03,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:33:15" (1/3) ... [2023-12-24 09:34:03,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec8a7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:34:03, skipping insertion in model container [2023-12-24 09:34:03,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:33:15" (2/3) ... [2023-12-24 09:34:03,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec8a7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:34:03, skipping insertion in model container [2023-12-24 09:34:03,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:34:03" (3/3) ... [2023-12-24 09:34:03,473 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-4.i [2023-12-24 09:34:03,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:34:03,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:34:03,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:34:03,526 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;@10172157, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:34:03,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:34:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 152 states have (on average 1.5789473684210527) internal successors, (240), 153 states have internal predecessors, (240), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 09:34:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-24 09:34:03,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:34:03,555 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:03,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:34:03,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:34:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -649315050, now seen corresponding path program 1 times [2023-12-24 09:34:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:34:03,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612904990] [2023-12-24 09:34:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:03,578 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 09:34:03,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:34:03,581 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 09:34:03,586 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 09:34:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:34:06,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:34:06,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:34:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-24 09:34:06,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:34:06,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:34:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612904990] [2023-12-24 09:34:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612904990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:34:06,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:34:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:34:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453979723] [2023-12-24 09:34:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:34:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:34:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:34:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:34:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:34:06,364 INFO L87 Difference]: Start difference. First operand has 216 states, 152 states have (on average 1.5789473684210527) internal successors, (240), 153 states have internal predecessors, (240), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:34:12,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:34:12,330 INFO L93 Difference]: Finished difference Result 427 states and 779 transitions. [2023-12-24 09:34:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:34:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 416 [2023-12-24 09:34:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:34:12,993 INFO L225 Difference]: With dead ends: 427 [2023-12-24 09:34:12,994 INFO L226 Difference]: Without dead ends: 212 [2023-12-24 09:34:12,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 415 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 09:34:13,000 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:34:13,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-12-24 09:34:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-24 09:34:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-12-24 09:34:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 149 states have (on average 1.5436241610738255) internal successors, (230), 149 states have internal predecessors, (230), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-24 09:34:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 352 transitions. [2023-12-24 09:34:13,061 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 352 transitions. Word has length 416 [2023-12-24 09:34:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:34:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 352 transitions. [2023-12-24 09:34:13,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:34:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 352 transitions. [2023-12-24 09:34:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-24 09:34:13,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:34:13,076 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:13,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 09:34:13,305 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 09:34:13,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:34:13,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:34:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2066979554, now seen corresponding path program 1 times [2023-12-24 09:34:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:34:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656942689] [2023-12-24 09:34:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:13,308 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 09:34:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:34:13,309 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 09:34:13,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 09:34:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:34:16,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:34:16,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:34:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-24 09:34:32,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:34:32,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:34:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656942689] [2023-12-24 09:34:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656942689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:34:32,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:34:32,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 09:34:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522736265] [2023-12-24 09:34:32,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:34:32,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:34:32,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:34:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:34:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 09:34:32,533 INFO L87 Difference]: Start difference. First operand 212 states and 352 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:34:38,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:42,726 WARN L539 Checker$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 09:34:49,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:34:53,369 WARN L539 Checker$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 09:34:57,379 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 09:34:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:34:57,380 INFO L93 Difference]: Finished difference Result 633 states and 1051 transitions. [2023-12-24 09:34:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:34:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 416 [2023-12-24 09:34:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:34:58,069 INFO L225 Difference]: With dead ends: 633 [2023-12-24 09:34:58,069 INFO L226 Difference]: Without dead ends: 422 [2023-12-24 09:34:58,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 09:34:58,071 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 257 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 124 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:34:58,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1038 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 24.6s Time] [2023-12-24 09:34:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-24 09:34:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 339. [2023-12-24 09:34:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 214 states have (on average 1.4532710280373833) internal successors, (311), 214 states have internal predecessors, (311), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 09:34:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 555 transitions. [2023-12-24 09:34:58,107 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 555 transitions. Word has length 416 [2023-12-24 09:34:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:34:58,108 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 555 transitions. [2023-12-24 09:34:58,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:34:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 555 transitions. [2023-12-24 09:34:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-24 09:34:58,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:34:58,118 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:58,182 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 (3)] Ended with exit code 0 [2023-12-24 09:34:58,338 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 09:34:58,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:34:58,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:34:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2078857952, now seen corresponding path program 1 times [2023-12-24 09:34:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:34:58,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018369626] [2023-12-24 09:34:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:34:58,341 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 09:34:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:34:58,344 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 09:34:58,345 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 09:35:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:01,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:35:01,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:35:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-24 09:35:17,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:35:17,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:35:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018369626] [2023-12-24 09:35:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018369626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:35:17,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:35:17,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 09:35:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480246006] [2023-12-24 09:35:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:35:17,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:35:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:35:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:35:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 09:35:17,947 INFO L87 Difference]: Start difference. First operand 339 states and 555 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:35:20,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:26,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:30,542 WARN L539 Checker$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 09:35:37,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:35:41,111 WARN L539 Checker$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 09:35:45,128 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 09:35:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:35:45,129 INFO L93 Difference]: Finished difference Result 640 states and 1059 transitions. [2023-12-24 09:35:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:35:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 416 [2023-12-24 09:35:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:35:45,852 INFO L225 Difference]: With dead ends: 640 [2023-12-24 09:35:45,853 INFO L226 Difference]: Without dead ends: 422 [2023-12-24 09:35:45,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 09:35:45,854 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 286 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 123 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2023-12-24 09:35:45,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1038 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 27.0s Time] [2023-12-24 09:35:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-24 09:35:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 339. [2023-12-24 09:35:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 214 states have (on average 1.4485981308411215) internal successors, (310), 214 states have internal predecessors, (310), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 09:35:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 554 transitions. [2023-12-24 09:35:45,887 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 554 transitions. Word has length 416 [2023-12-24 09:35:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:35:45,888 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 554 transitions. [2023-12-24 09:35:45,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:35:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 554 transitions. [2023-12-24 09:35:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-24 09:35:45,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:35:45,891 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:45,954 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 (4)] Ended with exit code 0 [2023-12-24 09:35:46,116 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 09:35:46,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:35:46,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:35:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 254534686, now seen corresponding path program 1 times [2023-12-24 09:35:46,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:35:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881532652] [2023-12-24 09:35:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:35:46,119 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 09:35:46,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:35:46,121 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 09:35:46,122 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 09:35:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:35:49,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:35:49,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:36:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1368 proven. 162 refuted. 0 times theorem prover too weak. 5790 trivial. 0 not checked. [2023-12-24 09:36:06,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:36:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 18 proven. 162 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-12-24 09:36:13,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:36:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881532652] [2023-12-24 09:36:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881532652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:36:13,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:36:13,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 09:36:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739775954] [2023-12-24 09:36:13,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:36:13,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:36:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:36:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:36:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 09:36:13,939 INFO L87 Difference]: Start difference. First operand 339 states and 554 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-24 09:36:25,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:36:27,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:36:35,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:36:39,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:36:43,098 WARN L539 Checker$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 09:36:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:36:52,691 INFO L93 Difference]: Finished difference Result 565 states and 920 transitions. [2023-12-24 09:36:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 09:36:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 416 [2023-12-24 09:36:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:36:52,695 INFO L225 Difference]: With dead ends: 565 [2023-12-24 09:36:52,695 INFO L226 Difference]: Without dead ends: 354 [2023-12-24 09:36:52,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 824 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-24 09:36:52,696 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 571 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2023-12-24 09:36:52,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1129 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 721 Invalid, 3 Unknown, 0 Unchecked, 36.5s Time] [2023-12-24 09:36:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-24 09:36:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2023-12-24 09:36:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 220 states have (on average 1.4227272727272726) internal successors, (313), 220 states have internal predecessors, (313), 122 states have call successors, (122), 4 states have call predecessors, (122), 4 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 09:36:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 557 transitions. [2023-12-24 09:36:52,734 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 557 transitions. Word has length 416 [2023-12-24 09:36:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:36:52,735 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 557 transitions. [2023-12-24 09:36:52,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-12-24 09:36:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 557 transitions. [2023-12-24 09:36:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-24 09:36:52,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:36:52,738 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:36:52,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 09:36:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:36:52,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:36:52,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:36:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1132502306, now seen corresponding path program 1 times [2023-12-24 09:36:52,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:36:52,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217148585] [2023-12-24 09:36:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:36:52,955 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 09:36:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:36:52,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:36:52,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 09:36:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:36:55,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 09:36:55,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:37:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 964 proven. 168 refuted. 0 times theorem prover too weak. 6188 trivial. 0 not checked. [2023-12-24 09:37:12,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:37:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 12 proven. 168 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-12-24 09:37:19,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:37:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217148585] [2023-12-24 09:37:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217148585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:37:19,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:37:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-24 09:37:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733809321] [2023-12-24 09:37:19,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:37:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 09:37:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:37:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 09:37:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 09:37:19,932 INFO L87 Difference]: Start difference. First operand 347 states and 557 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-24 09:37:36,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:37:40,496 WARN L539 Checker$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 09:37:44,516 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 09:37:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:37:45,932 INFO L93 Difference]: Finished difference Result 576 states and 920 transitions. [2023-12-24 09:37:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 09:37:45,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 416 [2023-12-24 09:37:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:37:45,935 INFO L225 Difference]: With dead ends: 576 [2023-12-24 09:37:45,935 INFO L226 Difference]: Without dead ends: 361 [2023-12-24 09:37:45,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 824 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:37:45,936 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 162 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2023-12-24 09:37:45,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 671 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 399 Invalid, 3 Unknown, 0 Unchecked, 25.3s Time] [2023-12-24 09:37:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-24 09:37:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 355. [2023-12-24 09:37:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 226 states have (on average 1.3849557522123894) internal successors, (313), 226 states have internal predecessors, (313), 122 states have call successors, (122), 6 states have call predecessors, (122), 6 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-24 09:37:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 557 transitions. [2023-12-24 09:37:45,958 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 557 transitions. Word has length 416 [2023-12-24 09:37:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:37:45,958 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 557 transitions. [2023-12-24 09:37:45,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-24 09:37:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 557 transitions. [2023-12-24 09:37:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-24 09:37:45,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:37:45,961 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:46,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 09:37:46,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:37:46,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:37:46,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:37:46,185 INFO L85 PathProgramCache]: Analyzing trace with hash -801854737, now seen corresponding path program 1 times [2023-12-24 09:37:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:37:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159720804] [2023-12-24 09:37:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:37:46,186 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 09:37:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:37:46,187 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 09:37:46,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 09:37:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:37:49,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:37:49,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:38:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3168 proven. 54 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-12-24 09:38:16,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:38:21,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:38:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159720804] [2023-12-24 09:38:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159720804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:38:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31044531] [2023-12-24 09:38:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:38:21,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:38:21,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:38:21,049 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 09:38:21,052 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 09:38:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:38:22,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:38:22,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:38:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-24 09:38:27,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:38:27,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31044531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:38:27,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:38:27,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-12-24 09:38:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514490465] [2023-12-24 09:38:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:38:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 09:38:27,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:38:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 09:38:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:38:27,401 INFO L87 Difference]: Start difference. First operand 355 states and 557 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:38:29,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:37,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:41,287 WARN L539 Checker$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 09:38:45,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:48,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:38:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:38:49,225 INFO L93 Difference]: Finished difference Result 805 states and 1262 transitions. [2023-12-24 09:38:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 09:38:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 417 [2023-12-24 09:38:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:38:49,228 INFO L225 Difference]: With dead ends: 805 [2023-12-24 09:38:49,228 INFO L226 Difference]: Without dead ends: 586 [2023-12-24 09:38:49,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 997 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-24 09:38:49,230 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 644 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:38:49,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1734 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 92 Invalid, 3 Unknown, 0 Unchecked, 21.1s Time] [2023-12-24 09:38:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-12-24 09:38:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 582. [2023-12-24 09:38:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 386 states have (on average 1.4041450777202074) internal successors, (542), 386 states have internal predecessors, (542), 183 states have call successors, (183), 12 states have call predecessors, (183), 12 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-12-24 09:38:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 908 transitions. [2023-12-24 09:38:49,272 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 908 transitions. Word has length 417 [2023-12-24 09:38:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:38:49,273 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 908 transitions. [2023-12-24 09:38:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:38:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 908 transitions. [2023-12-24 09:38:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-24 09:38:49,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:38:49,278 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:38:49,339 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 09:38:49,518 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 09:38:49,704 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 09:38:49,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:38:49,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:38:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -100790159, now seen corresponding path program 1 times [2023-12-24 09:38:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:38:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260643320] [2023-12-24 09:38:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:38:49,706 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 09:38:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:38:49,707 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 09:38:49,708 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 09:38:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:38:52,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:38:52,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3168 proven. 54 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-12-24 09:39:18,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:39:23,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:39:23,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260643320] [2023-12-24 09:39:23,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260643320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:39:23,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045047927] [2023-12-24 09:39:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:39:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:39:23,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:39:23,088 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 09:39:23,090 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 09:39:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:39:28,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 09:39:28,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:39:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-12-24 09:39:48,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:39:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2045047927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:39:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:39:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-24 09:39:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734699507] [2023-12-24 09:39:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:39:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:39:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:39:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:39:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-24 09:39:48,550 INFO L87 Difference]: Start difference. First operand 582 states and 908 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:39:54,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:39:58,885 WARN L539 Checker$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 09:40:02,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:09,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:13,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:40:17,610 WARN L539 Checker$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 09:40:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:40:17,613 INFO L93 Difference]: Finished difference Result 1540 states and 2422 transitions. [2023-12-24 09:40:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 09:40:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 417 [2023-12-24 09:40:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:40:18,316 INFO L225 Difference]: With dead ends: 1540 [2023-12-24 09:40:18,316 INFO L226 Difference]: Without dead ends: 1098 [2023-12-24 09:40:18,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 998 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:40:18,318 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 344 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 123 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-12-24 09:40:18,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1083 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 28.7s Time] [2023-12-24 09:40:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-12-24 09:40:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1022. [2023-12-24 09:40:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 696 states have (on average 1.4238505747126438) internal successors, (991), 696 states have internal predecessors, (991), 305 states have call successors, (305), 20 states have call predecessors, (305), 20 states have return successors, (305), 305 states have call predecessors, (305), 305 states have call successors, (305) [2023-12-24 09:40:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1601 transitions. [2023-12-24 09:40:18,406 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1601 transitions. Word has length 417 [2023-12-24 09:40:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:40:18,407 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1601 transitions. [2023-12-24 09:40:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-12-24 09:40:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1601 transitions. [2023-12-24 09:40:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-24 09:40:18,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:40:18,410 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:18,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 09:40:18,675 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 09:40:18,835 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 09:40:18,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:40:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:40:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1028275188, now seen corresponding path program 1 times [2023-12-24 09:40:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:40:18,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239955136] [2023-12-24 09:40:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:40:18,837 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 09:40:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:40:18,838 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 09:40:18,839 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 09:40:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:40:21,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 09:40:21,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:40:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3168 proven. 54 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-12-24 09:40:46,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:40:51,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:40:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239955136] [2023-12-24 09:40:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239955136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:40:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [48338045] [2023-12-24 09:40:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:40:51,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:40:51,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:40:51,268 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 09:40:51,269 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 09:40:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:40:59,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:40:59,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:41:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3168 proven. 54 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-12-24 09:41:24,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:41:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [48338045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:41:28,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:41:28,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-24 09:41:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189187393] [2023-12-24 09:41:28,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:41:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 09:41:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:41:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 09:41:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:41:28,976 INFO L87 Difference]: Start difference. First operand 1022 states and 1601 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-24 09:41:40,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:47,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:51,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:41:55,105 WARN L539 Checker$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 09:41:59,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:05,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:09,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:13,592 WARN L539 Checker$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 09:42:17,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:21,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:42:25,607 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 09:42:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:42:25,609 INFO L93 Difference]: Finished difference Result 2072 states and 3256 transitions. [2023-12-24 09:42:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 09:42:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 418 [2023-12-24 09:42:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:42:26,349 INFO L225 Difference]: With dead ends: 2072 [2023-12-24 09:42:26,349 INFO L226 Difference]: Without dead ends: 1190 [2023-12-24 09:42:26,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1179 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-12-24 09:42:26,354 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 414 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 220 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2023-12-24 09:42:26,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1346 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 337 Invalid, 10 Unknown, 0 Unchecked, 54.6s Time] [2023-12-24 09:42:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-12-24 09:42:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1055. [2023-12-24 09:42:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 728 states have (on average 1.4244505494505495) internal successors, (1037), 728 states have internal predecessors, (1037), 305 states have call successors, (305), 21 states have call predecessors, (305), 21 states have return successors, (305), 305 states have call predecessors, (305), 305 states have call successors, (305) [2023-12-24 09:42:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1647 transitions. [2023-12-24 09:42:26,469 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1647 transitions. Word has length 418 [2023-12-24 09:42:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:42:26,469 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1647 transitions. [2023-12-24 09:42:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-24 09:42:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1647 transitions. [2023-12-24 09:42:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-24 09:42:26,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:42:26,472 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:26,534 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 09:42:26,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-24 09:42:26,900 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 09:42:26,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:42:26,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:42:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1843632098, now seen corresponding path program 1 times [2023-12-24 09:42:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:42:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757446445] [2023-12-24 09:42:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:42:26,902 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 09:42:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:42:26,908 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 09:42:26,909 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 09:42:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:42:30,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:42:30,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:42:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1838 proven. 42 refuted. 0 times theorem prover too weak. 5440 trivial. 0 not checked. [2023-12-24 09:42:41,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:42:45,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:42:45,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757446445] [2023-12-24 09:42:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757446445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:42:45,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894856025] [2023-12-24 09:42:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:42:45,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:42:45,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:42:45,805 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 09:42:45,806 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 09:42:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:42:54,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 09:42:54,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:42:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1828 proven. 24 refuted. 0 times theorem prover too weak. 5468 trivial. 0 not checked. [2023-12-24 09:42:59,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:43:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [894856025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:43:02,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:43:02,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-24 09:43:02,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622771514] [2023-12-24 09:43:02,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:43:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 09:43:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:43:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 09:43:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-24 09:43:02,181 INFO L87 Difference]: Start difference. First operand 1055 states and 1647 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-24 09:43:21,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:25,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:29,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:33,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:43:37,753 WARN L539 Checker$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 09:43:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:43:37,811 INFO L93 Difference]: Finished difference Result 1985 states and 3062 transitions. [2023-12-24 09:43:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 09:43:38,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 419 [2023-12-24 09:43:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:43:38,558 INFO L225 Difference]: With dead ends: 1985 [2023-12-24 09:43:38,558 INFO L226 Difference]: Without dead ends: 1103 [2023-12-24 09:43:38,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 985 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-24 09:43:38,561 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 205 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2023-12-24 09:43:38,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 881 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 460 Invalid, 5 Unknown, 0 Unchecked, 34.3s Time] [2023-12-24 09:43:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2023-12-24 09:43:38,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1083. [2023-12-24 09:43:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 746 states have (on average 1.3927613941018766) internal successors, (1039), 746 states have internal predecessors, (1039), 305 states have call successors, (305), 31 states have call predecessors, (305), 31 states have return successors, (305), 305 states have call predecessors, (305), 305 states have call successors, (305) [2023-12-24 09:43:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1649 transitions. [2023-12-24 09:43:38,630 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1649 transitions. Word has length 419 [2023-12-24 09:43:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:43:38,631 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1649 transitions. [2023-12-24 09:43:38,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 3 states have call successors, (68), 3 states have call predecessors, (68), 5 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-24 09:43:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1649 transitions. [2023-12-24 09:43:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-24 09:43:38,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:43:38,633 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:38,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-24 09:43:38,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 09:43:39,061 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 09:43:39,061 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:43:39,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:43:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1284200894, now seen corresponding path program 1 times [2023-12-24 09:43:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:43:39,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220926783] [2023-12-24 09:43:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:43:39,063 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 09:43:39,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:43:39,064 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 09:43:39,065 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 09:43:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:43:42,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 09:43:42,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:44:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4130 proven. 219 refuted. 0 times theorem prover too weak. 2971 trivial. 0 not checked. [2023-12-24 09:44:13,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:44:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 135 proven. 222 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2023-12-24 09:44:30,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:44:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220926783] [2023-12-24 09:44:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220926783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 09:44:30,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 09:44:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-12-24 09:44:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124561704] [2023-12-24 09:44:30,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 09:44:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 09:44:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:44:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 09:44:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-24 09:44:30,397 INFO L87 Difference]: Start difference. First operand 1083 states and 1649 transitions. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (115), 3 states have call predecessors, (115), 7 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2023-12-24 09:44:52,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:44:53,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:01,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:05,424 WARN L539 Checker$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 09:45:09,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:13,455 WARN L539 Checker$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 09:45:17,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:45:21,481 WARN L539 Checker$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 09:45:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:45:34,108 INFO L93 Difference]: Finished difference Result 2059 states and 3099 transitions. [2023-12-24 09:45:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 09:45:34,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (115), 3 states have call predecessors, (115), 7 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 419 [2023-12-24 09:45:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:45:34,113 INFO L225 Difference]: With dead ends: 2059 [2023-12-24 09:45:34,114 INFO L226 Difference]: Without dead ends: 1157 [2023-12-24 09:45:34,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 823 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2023-12-24 09:45:34,117 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 592 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 246 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.1s IncrementalHoareTripleChecker+Time [2023-12-24 09:45:34,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1307 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1075 Invalid, 6 Unknown, 0 Unchecked, 59.1s Time] [2023-12-24 09:45:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-24 09:45:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1119. [2023-12-24 09:45:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 773 states have (on average 1.3738680465717983) internal successors, (1062), 773 states have internal predecessors, (1062), 305 states have call successors, (305), 40 states have call predecessors, (305), 40 states have return successors, (305), 305 states have call predecessors, (305), 305 states have call successors, (305) [2023-12-24 09:45:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1672 transitions. [2023-12-24 09:45:34,193 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1672 transitions. Word has length 419 [2023-12-24 09:45:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:45:34,193 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1672 transitions. [2023-12-24 09:45:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 3 states have call successors, (115), 3 states have call predecessors, (115), 7 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2023-12-24 09:45:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1672 transitions. [2023-12-24 09:45:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-24 09:45:34,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:45:34,197 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:45:34,259 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 09:45:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:45:34,410 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:45:34,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:45:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2144850048, now seen corresponding path program 1 times [2023-12-24 09:45:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:45:34,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293499196] [2023-12-24 09:45:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:45:34,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:45:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:45:34,413 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:45:34,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 09:45:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:45:37,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 09:45:37,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-24 09:47:47,665 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 09:47:47,665 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 (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 09:47:47,676 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 09:47:47,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 09:47:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:47:47,878 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 421 with TraceHistMax 61,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-1 context. [2023-12-24 09:47:47,882 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:47:47,884 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 09:47:47,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 09:47:47 BoogieIcfgContainer [2023-12-24 09:47:47,899 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 09:47:47,900 INFO L158 Benchmark]: Toolchain (without parser) took 872797.60ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 198.8MB in the beginning and 197.2MB in the end (delta: 1.6MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,900 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 211.8MB. Free memory is still 159.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 09:47:47,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.62ms. Allocated memory is still 254.8MB. Free memory was 198.2MB in the beginning and 162.0MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.14ms. Allocated memory is still 254.8MB. Free memory was 162.0MB in the beginning and 213.7MB in the end (delta: -51.6MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,900 INFO L158 Benchmark]: Boogie Preprocessor took 109.27ms. Allocated memory is still 254.8MB. Free memory was 213.7MB in the beginning and 191.6MB in the end (delta: 22.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,901 INFO L158 Benchmark]: RCFGBuilder took 47630.62ms. Allocated memory is still 254.8MB. Free memory was 191.6MB in the beginning and 181.2MB in the end (delta: 10.5MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,901 INFO L158 Benchmark]: TraceAbstraction took 824431.57ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 180.6MB in the beginning and 197.2MB in the end (delta: -16.6MB). Peak memory consumption was 34.3MB. Max. memory is 8.0GB. [2023-12-24 09:47:47,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 211.8MB. Free memory is still 159.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 545.62ms. Allocated memory is still 254.8MB. Free memory was 198.2MB in the beginning and 162.0MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.14ms. Allocated memory is still 254.8MB. Free memory was 162.0MB in the beginning and 213.7MB in the end (delta: -51.6MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 109.27ms. Allocated memory is still 254.8MB. Free memory was 213.7MB in the beginning and 191.6MB in the end (delta: 22.1MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * RCFGBuilder took 47630.62ms. Allocated memory is still 254.8MB. Free memory was 191.6MB in the beginning and 181.2MB in the end (delta: 10.5MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. * TraceAbstraction took 824431.57ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 180.6MB in the beginning and 197.2MB in the end (delta: -16.6MB). Peak memory consumption was 34.3MB. 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 421 with TraceHistMax 61,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 824.4s, OverallIterations: 11, TraceHistogramMax: 61, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 334.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 mSolverCounterUnknown, 3546 SdHoareTripleChecker+Valid, 317.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3475 mSDsluCounter, 10576 SdHoareTripleChecker+Invalid, 309.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6972 mSDsCounter, 1051 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3121 IncrementalHoareTripleChecker+Invalid, 4219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1051 mSolverCounterUnsat, 3604 mSDtfsCounter, 3121 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7981 GetRequests, 7871 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1119occurred in iteration=10, InterpolantAutomatonStates: 89, 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, 10 MinimizatonAttempts, 452 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 49.5s SatisfiabilityAnalysisTime, 301.7s InterpolantComputationTime, 5841 NumberOfCodeBlocks, 5841 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7075 ConstructedInterpolants, 0 QuantifiedInterpolants, 22943 SizeOfPredicates, 44 NumberOfNonLiveVariables, 10605 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 123057/124440 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