/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_fillercode_fillercodestructure_filler-pr-co_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 13:35:15,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 13:35:15,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 13:35:15,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 13:35:15,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 13:35:15,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 13:35:15,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 13:35:15,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 13:35:15,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 13:35:15,631 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 13:35:15,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 13:35:15,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 13:35:15,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 13:35:15,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 13:35:15,634 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 13:35:15,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 13:35:15,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 13:35:15,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 13:35:15,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 13:35:15,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 13:35:15,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 13:35:15,636 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 13:35:15,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 13:35:15,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 13:35:15,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 13:35:15,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 13:35:15,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 13:35:15,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 13:35:15,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 13:35:15,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:35:15,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 13:35:15,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 13:35:15,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 13:35:15,639 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 13:35:15,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 13:35:15,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 13:35:15,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 13:35:15,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 13:35:15,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 13:35:15,874 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 13:35:15,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-23 13:35:16,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 13:35:17,168 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 13:35:17,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-23 13:35:17,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558ab6465/f5f3c051f88441dfab920c22c173b04f/FLAG91ef5d297 [2023-12-23 13:35:17,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558ab6465/f5f3c051f88441dfab920c22c173b04f [2023-12-23 13:35:17,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 13:35:17,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 13:35:17,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 13:35:17,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 13:35:17,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 13:35:17,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a97a43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17, skipping insertion in model container [2023-12-23 13:35:17,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 13:35:17,354 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_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2023-12-23 13:35:17,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:35:17,473 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 13:35:17,485 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_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2023-12-23 13:35:17,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:35:17,525 INFO L206 MainTranslator]: Completed translation [2023-12-23 13:35:17,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17 WrapperNode [2023-12-23 13:35:17,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 13:35:17,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 13:35:17,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 13:35:17,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 13:35:17,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,565 INFO L138 Inliner]: procedures = 27, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-12-23 13:35:17,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 13:35:17,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 13:35:17,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 13:35:17,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 13:35:17,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,591 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]. [2023-12-23 13:35:17,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 13:35:17,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 13:35:17,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 13:35:17,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 13:35:17,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (1/1) ... [2023-12-23 13:35:17,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:35:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 13:35:17,678 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) [2023-12-23 13:35:17,722 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 [2023-12-23 13:35:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 13:35:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 13:35:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 13:35:17,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 13:35:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 13:35:17,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 13:35:17,807 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 13:35:17,809 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 13:35:18,872 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 13:35:18,912 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 13:35:18,912 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 13:35:18,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:35:18 BoogieIcfgContainer [2023-12-23 13:35:18,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 13:35:18,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 13:35:18,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 13:35:18,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 13:35:18,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:35:17" (1/3) ... [2023-12-23 13:35:18,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a477fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:35:18, skipping insertion in model container [2023-12-23 13:35:18,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:35:17" (2/3) ... [2023-12-23 13:35:18,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a477fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:35:18, skipping insertion in model container [2023-12-23 13:35:18,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:35:18" (3/3) ... [2023-12-23 13:35:18,919 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-23 13:35:18,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 13:35:18,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 13:35:18,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 13:35:18,989 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;@67cb59db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 13:35:18,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 13:35:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 13:35:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-23 13:35:19,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:19,007 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:19,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash -231208351, now seen corresponding path program 1 times [2023-12-23 13:35:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122294646] [2023-12-23 13:35:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:19,023 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 [2023-12-23 13:35:19,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:19,026 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) [2023-12-23 13:35:19,027 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 [2023-12-23 13:35:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:19,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 13:35:19,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-12-23 13:35:19,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:35:19,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:19,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122294646] [2023-12-23 13:35:19,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122294646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:35:19,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:35:19,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 13:35:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063785266] [2023-12-23 13:35:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:35:19,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 13:35:19,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:19,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 13:35:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:35:19,579 INFO L87 Difference]: Start difference. First operand has 109 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:19,668 INFO L93 Difference]: Finished difference Result 215 states and 402 transitions. [2023-12-23 13:35:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 13:35:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) Word has length 286 [2023-12-23 13:35:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:19,683 INFO L225 Difference]: With dead ends: 215 [2023-12-23 13:35:19,684 INFO L226 Difference]: Without dead ends: 107 [2023-12-23 13:35:19,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:35:19,696 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:19,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 13:35:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-23 13:35:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-12-23 13:35:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 13:35:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions. [2023-12-23 13:35:19,731 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 286 [2023-12-23 13:35:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:19,731 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 173 transitions. [2023-12-23 13:35:19,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions. [2023-12-23 13:35:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-23 13:35:19,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:19,749 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:19,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 13:35:19,958 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 [2023-12-23 13:35:19,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:19,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1311339865, now seen corresponding path program 1 times [2023-12-23 13:35:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:19,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438443013] [2023-12-23 13:35:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:19,962 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 [2023-12-23 13:35:19,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:19,963 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) [2023-12-23 13:35:19,965 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 [2023-12-23 13:35:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:20,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 13:35:20,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-23 13:35:21,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-23 13:35:21,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438443013] [2023-12-23 13:35:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438443013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 13:35:21,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:35:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-23 13:35:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008968251] [2023-12-23 13:35:21,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:35:21,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 13:35:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 13:35:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-23 13:35:21,695 INFO L87 Difference]: Start difference. First operand 107 states and 173 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-23 13:35:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:23,367 INFO L93 Difference]: Finished difference Result 438 states and 697 transitions. [2023-12-23 13:35:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-23 13:35:23,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 286 [2023-12-23 13:35:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:23,376 INFO L225 Difference]: With dead ends: 438 [2023-12-23 13:35:23,376 INFO L226 Difference]: Without dead ends: 332 [2023-12-23 13:35:23,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2023-12-23 13:35:23,378 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 743 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:23,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 821 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 13:35:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-23 13:35:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 111. [2023-12-23 13:35:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 13:35:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 175 transitions. [2023-12-23 13:35:23,410 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 175 transitions. Word has length 286 [2023-12-23 13:35:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:23,410 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 175 transitions. [2023-12-23 13:35:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-23 13:35:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 175 transitions. [2023-12-23 13:35:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-23 13:35:23,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:23,414 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:23,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:23,641 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 [2023-12-23 13:35:23,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:23,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 31476187, now seen corresponding path program 1 times [2023-12-23 13:35:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678038644] [2023-12-23 13:35:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:23,643 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 [2023-12-23 13:35:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:23,649 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) [2023-12-23 13:35:23,660 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 [2023-12-23 13:35:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:23,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 13:35:23,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-23 13:35:25,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:25,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678038644] [2023-12-23 13:35:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678038644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499579502] [2023-12-23 13:35:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:25,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:35:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:35:25,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:35:25,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 13:35:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:26,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 13:35:26,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-23 13:35:27,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:35:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [499579502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:35:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:35:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-12-23 13:35:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783410486] [2023-12-23 13:35:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:35:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 13:35:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 13:35:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-23 13:35:27,017 INFO L87 Difference]: Start difference. First operand 111 states and 175 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:27,661 INFO L93 Difference]: Finished difference Result 332 states and 524 transitions. [2023-12-23 13:35:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 13:35:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 286 [2023-12-23 13:35:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:27,669 INFO L225 Difference]: With dead ends: 332 [2023-12-23 13:35:27,669 INFO L226 Difference]: Without dead ends: 222 [2023-12-23 13:35:27,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-12-23 13:35:27,671 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 149 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 620 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 13:35:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-23 13:35:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2023-12-23 13:35:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 104 states have (on average 1.25) internal successors, (130), 104 states have internal predecessors, (130), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-23 13:35:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 322 transitions. [2023-12-23 13:35:27,723 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 322 transitions. Word has length 286 [2023-12-23 13:35:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:27,724 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 322 transitions. [2023-12-23 13:35:27,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 322 transitions. [2023-12-23 13:35:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-23 13:35:27,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:27,727 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:27,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:27,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:28,147 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 13:35:28,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:28,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash -226689251, now seen corresponding path program 1 times [2023-12-23 13:35:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:28,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082723698] [2023-12-23 13:35:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:28,150 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 [2023-12-23 13:35:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:28,159 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) [2023-12-23 13:35:28,162 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 [2023-12-23 13:35:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:28,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 13:35:28,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-12-23 13:35:28,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:28,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082723698] [2023-12-23 13:35:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082723698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108087879] [2023-12-23 13:35:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:28,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:35:28,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:35:28,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:35:28,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 13:35:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:29,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 13:35:29,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-12-23 13:35:29,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [108087879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:29,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:35:29,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-23 13:35:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213777691] [2023-12-23 13:35:29,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:35:29,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 13:35:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 13:35:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 13:35:29,704 INFO L87 Difference]: Start difference. First operand 205 states and 322 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-23 13:35:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:30,691 INFO L93 Difference]: Finished difference Result 335 states and 521 transitions. [2023-12-23 13:35:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 13:35:30,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 286 [2023-12-23 13:35:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:30,693 INFO L225 Difference]: With dead ends: 335 [2023-12-23 13:35:30,693 INFO L226 Difference]: Without dead ends: 225 [2023-12-23 13:35:30,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 13:35:30,695 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 124 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:30,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 565 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 13:35:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-23 13:35:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 217. [2023-12-23 13:35:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 114 states have internal predecessors, (142), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-23 13:35:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 334 transitions. [2023-12-23 13:35:30,722 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 334 transitions. Word has length 286 [2023-12-23 13:35:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:30,723 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 334 transitions. [2023-12-23 13:35:30,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-23 13:35:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 334 transitions. [2023-12-23 13:35:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-23 13:35:30,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:30,726 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:30,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:30,941 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 [2023-12-23 13:35:31,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 13:35:31,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1560687285, now seen corresponding path program 1 times [2023-12-23 13:35:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132537668] [2023-12-23 13:35:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:31,134 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 [2023-12-23 13:35:31,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:31,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:35:31,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 13:35:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:31,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 13:35:31,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 897 proven. 126 refuted. 0 times theorem prover too weak. 3489 trivial. 0 not checked. [2023-12-23 13:35:31,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-23 13:35:31,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132537668] [2023-12-23 13:35:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132537668] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:31,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:35:31,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-23 13:35:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145217898] [2023-12-23 13:35:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:35:31,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 13:35:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 13:35:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-23 13:35:31,807 INFO L87 Difference]: Start difference. First operand 217 states and 334 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:31,943 INFO L93 Difference]: Finished difference Result 384 states and 587 transitions. [2023-12-23 13:35:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 13:35:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 287 [2023-12-23 13:35:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:31,948 INFO L225 Difference]: With dead ends: 384 [2023-12-23 13:35:31,948 INFO L226 Difference]: Without dead ends: 270 [2023-12-23 13:35:31,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-23 13:35:31,949 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 104 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:31,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 333 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 13:35:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-23 13:35:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2023-12-23 13:35:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 159 states have internal predecessors, (208), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 13:35:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 408 transitions. [2023-12-23 13:35:31,985 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 408 transitions. Word has length 287 [2023-12-23 13:35:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:31,985 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 408 transitions. [2023-12-23 13:35:31,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-23 13:35:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 408 transitions. [2023-12-23 13:35:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-23 13:35:31,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:31,988 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:31,999 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 (8)] Ended with exit code 0 [2023-12-23 13:35:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:35:32,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:32,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1560746867, now seen corresponding path program 1 times [2023-12-23 13:35:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629360579] [2023-12-23 13:35:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:32,199 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 [2023-12-23 13:35:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:32,201 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) [2023-12-23 13:35:32,204 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 [2023-12-23 13:35:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:32,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 13:35:32,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 452 proven. 270 refuted. 0 times theorem prover too weak. 3790 trivial. 0 not checked. [2023-12-23 13:35:33,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:34,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:35:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629360579] [2023-12-23 13:35:34,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629360579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [414526551] [2023-12-23 13:35:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:34,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:35:34,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:35:34,073 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) [2023-12-23 13:35:34,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 13:35:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:34,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 13:35:34,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:35:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 452 proven. 270 refuted. 0 times theorem prover too weak. 3790 trivial. 0 not checked. [2023-12-23 13:35:36,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:35:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [414526551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:35:36,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:35:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2023-12-23 13:35:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664341971] [2023-12-23 13:35:36,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:35:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 13:35:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:35:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 13:35:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-23 13:35:36,256 INFO L87 Difference]: Start difference. First operand 267 states and 408 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-23 13:35:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:35:37,746 INFO L93 Difference]: Finished difference Result 579 states and 866 transitions. [2023-12-23 13:35:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-23 13:35:37,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) Word has length 287 [2023-12-23 13:35:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:35:37,750 INFO L225 Difference]: With dead ends: 579 [2023-12-23 13:35:37,750 INFO L226 Difference]: Without dead ends: 428 [2023-12-23 13:35:37,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2023-12-23 13:35:37,752 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 386 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-23 13:35:37,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1805 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-23 13:35:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-23 13:35:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 281. [2023-12-23 13:35:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 172 states have internal predecessors, (228), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-23 13:35:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 428 transitions. [2023-12-23 13:35:37,785 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 428 transitions. Word has length 287 [2023-12-23 13:35:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:35:37,785 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 428 transitions. [2023-12-23 13:35:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (48), 2 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-23 13:35:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 428 transitions. [2023-12-23 13:35:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-23 13:35:37,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:35:37,787 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:35:37,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:38,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 13:35:38,203 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 [2023-12-23 13:35:38,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:35:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:35:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1818912305, now seen corresponding path program 1 times [2023-12-23 13:35:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:35:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788846669] [2023-12-23 13:35:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:35:38,205 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 [2023-12-23 13:35:38,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:35:38,206 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) [2023-12-23 13:35:38,207 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 [2023-12-23 13:35:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:35:38,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-23 13:35:38,715 INFO L285 TraceCheckSpWp]: Computing forward predicates...