/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_fillercodesize_ps-cn-250_file-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:01:30,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:01:30,884 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 02:01:30,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:01:30,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:01:30,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:01:30,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:01:30,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:01:30,902 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:01:30,903 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:01:30,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:01:30,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:01:30,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:01:30,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:01:30,904 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:01:30,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:01:30,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:01:30,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:01:30,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:01:30,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:01:30,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:01:30,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:01:30,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:01:30,906 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:01:30,906 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:01:30,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:01:30,907 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:01:30,907 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:01:30,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:01:30,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:01:30,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:01:30,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:01:30,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:01:30,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:01:30,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:01:30,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:01:30,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:01:30,910 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:01:30,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:01:30,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:01:30,910 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:01:30,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:01:31,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:01:31,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:01:31,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:01:31,100 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:01:31,101 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:01:31,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-11.i [2023-12-23 02:01:32,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:01:32,694 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:01:32,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-11.i [2023-12-23 02:01:32,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62b4a1b8/95ae8b530c394812b82af80299a18f0c/FLAGb98f941dc [2023-12-23 02:01:32,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62b4a1b8/95ae8b530c394812b82af80299a18f0c [2023-12-23 02:01:32,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:01:32,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:01:32,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:01:32,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:01:32,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:01:32,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:01:32" (1/1) ... [2023-12-23 02:01:32,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d4ccc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:32, skipping insertion in model container [2023-12-23 02:01:32,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:01:32" (1/1) ... [2023-12-23 02:01:32,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:01:33,113 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_fillercodesize_ps-cn-250_file-11.i[916,929] [2023-12-23 02:01:33,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:01:33,275 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:01:33,286 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_fillercodesize_ps-cn-250_file-11.i[916,929] [2023-12-23 02:01:33,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:01:33,343 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:01:33,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33 WrapperNode [2023-12-23 02:01:33,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:01:33,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:01:33,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:01:33,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:01:33,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,407 INFO L138 Inliner]: procedures = 27, calls = 94, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 458 [2023-12-23 02:01:33,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:01:33,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:01:33,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:01:33,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:01:33,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,435 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 02:01:33,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:01:33,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:01:33,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:01:33,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:01:33,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (1/1) ... [2023-12-23 02:01:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:01:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:01:33,511 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 02:01:33,518 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 02:01:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:01:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:01:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:01:33,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:01:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:01:33,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:01:33,656 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:01:33,658 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:01:46,520 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:01:46,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:01:46,567 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:01:46,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:01:46 BoogieIcfgContainer [2023-12-23 02:01:46,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:01:46,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:01:46,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:01:46,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:01:46,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:01:32" (1/3) ... [2023-12-23 02:01:46,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49754e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:01:46, skipping insertion in model container [2023-12-23 02:01:46,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:01:33" (2/3) ... [2023-12-23 02:01:46,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49754e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:01:46, skipping insertion in model container [2023-12-23 02:01:46,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:01:46" (3/3) ... [2023-12-23 02:01:46,574 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-11.i [2023-12-23 02:01:46,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:01:46,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:01:46,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:01:46,678 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;@198a1361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:01:46,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:01:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 119 states have (on average 1.5294117647058822) internal successors, (182), 120 states have internal predecessors, (182), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-23 02:01:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-23 02:01:46,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:01:46,705 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:46,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:01:46,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:01:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 949984622, now seen corresponding path program 1 times [2023-12-23 02:01:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:01:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691658371] [2023-12-23 02:01:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:01:46,722 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 02:01:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:01:46,724 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 02:01:46,824 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 02:01:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:01:47,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:01:47,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:01:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6540 proven. 126 refuted. 0 times theorem prover too weak. 6294 trivial. 0 not checked. [2023-12-23 02:01:48,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:01:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 114 proven. 126 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-23 02:01:49,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:01:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691658371] [2023-12-23 02:01:49,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691658371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:01:49,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:01:49,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:01:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166770588] [2023-12-23 02:01:49,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:01:49,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:01:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:01:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:01:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:01:49,414 INFO L87 Difference]: Start difference. First operand has 203 states, 119 states have (on average 1.5294117647058822) internal successors, (182), 120 states have internal predecessors, (182), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-23 02:01:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:01:52,472 INFO L93 Difference]: Finished difference Result 409 states and 774 transitions. [2023-12-23 02:01:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:01:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 489 [2023-12-23 02:01:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:01:52,489 INFO L225 Difference]: With dead ends: 409 [2023-12-23 02:01:52,489 INFO L226 Difference]: Without dead ends: 207 [2023-12-23 02:01:52,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 970 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:01:52,506 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 458 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:01:52,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 567 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-23 02:01:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-23 02:01:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-12-23 02:01:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 121 states have (on average 1.4545454545454546) internal successors, (176), 121 states have internal predecessors, (176), 81 states have call successors, (81), 2 states have call predecessors, (81), 2 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-23 02:01:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 338 transitions. [2023-12-23 02:01:52,595 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 338 transitions. Word has length 489 [2023-12-23 02:01:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:01:52,599 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 338 transitions. [2023-12-23 02:01:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-23 02:01:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 338 transitions. [2023-12-23 02:01:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-23 02:01:52,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:01:52,615 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:52,640 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 [2023-12-23 02:01:52,836 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 02:01:52,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:01:52,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:01:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1738733429, now seen corresponding path program 1 times [2023-12-23 02:01:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:01:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844770608] [2023-12-23 02:01:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:01:52,839 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 02:01:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:01:52,840 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 02:01:52,842 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 02:01:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:01:53,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:01:53,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:01:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6558 proven. 117 refuted. 0 times theorem prover too weak. 6285 trivial. 0 not checked. [2023-12-23 02:01:54,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:01:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 123 proven. 117 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-23 02:01:55,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:01:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844770608] [2023-12-23 02:01:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844770608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:01:55,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:01:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:01:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563814268] [2023-12-23 02:01:55,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:01:55,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:01:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:01:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:01:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:01:55,025 INFO L87 Difference]: Start difference. First operand 205 states and 338 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-23 02:01:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:01:56,753 INFO L93 Difference]: Finished difference Result 417 states and 682 transitions. [2023-12-23 02:01:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:01:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 491 [2023-12-23 02:01:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:01:56,760 INFO L225 Difference]: With dead ends: 417 [2023-12-23 02:01:56,760 INFO L226 Difference]: Without dead ends: 213 [2023-12-23 02:01:56,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 974 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:01:56,762 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 454 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 02:01:56,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 564 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 02:01:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-23 02:01:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2023-12-23 02:01:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 124 states have (on average 1.435483870967742) internal successors, (178), 124 states have internal predecessors, (178), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-23 02:01:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 340 transitions. [2023-12-23 02:01:56,813 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 340 transitions. Word has length 491 [2023-12-23 02:01:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:01:56,814 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 340 transitions. [2023-12-23 02:01:56,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-12-23 02:01:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 340 transitions. [2023-12-23 02:01:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:01:56,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:01:56,817 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:56,835 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 02:01:57,032 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 02:01:57,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:01:57,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:01:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1312249225, now seen corresponding path program 1 times [2023-12-23 02:01:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:01:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104243540] [2023-12-23 02:01:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:01:57,035 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 02:01:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:01:57,049 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 02:01:57,084 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 02:01:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:01:57,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:01:57,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:01:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6540 proven. 126 refuted. 0 times theorem prover too weak. 6294 trivial. 0 not checked. [2023-12-23 02:01:58,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:01:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 114 proven. 126 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-23 02:01:59,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:01:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104243540] [2023-12-23 02:01:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104243540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:01:59,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:01:59,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 02:01:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410192135] [2023-12-23 02:01:59,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:01:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:01:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:01:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:01:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:01:59,165 INFO L87 Difference]: Start difference. First operand 209 states and 340 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-23 02:02:00,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:06,421 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 [] [2023-12-23 02:02:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:06,517 INFO L93 Difference]: Finished difference Result 633 states and 1026 transitions. [2023-12-23 02:02:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 02:02:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 492 [2023-12-23 02:02:06,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:06,565 INFO L225 Difference]: With dead ends: 633 [2023-12-23 02:02:06,565 INFO L226 Difference]: Without dead ends: 425 [2023-12-23 02:02:06,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 976 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-23 02:02:06,567 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 692 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:06,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1064 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-23 02:02:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-23 02:02:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 415. [2023-12-23 02:02:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 162 states have call successors, (162), 6 states have call predecessors, (162), 6 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-23 02:02:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 677 transitions. [2023-12-23 02:02:06,624 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 677 transitions. Word has length 492 [2023-12-23 02:02:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:06,625 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 677 transitions. [2023-12-23 02:02:06,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-23 02:02:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 677 transitions. [2023-12-23 02:02:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-23 02:02:06,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:06,655 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:06,677 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 02:02:06,875 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 [2023-12-23 02:02:06,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:06,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash 73954169, now seen corresponding path program 1 times [2023-12-23 02:02:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121126842] [2023-12-23 02:02:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:06,877 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 02:02:06,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:06,886 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) [2023-12-23 02:02:06,891 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 [2023-12-23 02:02:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:07,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:02:07,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-23 02:02:11,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:02:11,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121126842] [2023-12-23 02:02:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121126842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:02:11,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:02:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:02:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606698291] [2023-12-23 02:02:11,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:02:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:02:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:02:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:02:11,851 INFO L87 Difference]: Start difference. First operand 415 states and 677 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:12,142 INFO L93 Difference]: Finished difference Result 1243 states and 2029 transitions. [2023-12-23 02:02:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:02:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 492 [2023-12-23 02:02:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:12,149 INFO L225 Difference]: With dead ends: 1243 [2023-12-23 02:02:12,150 INFO L226 Difference]: Without dead ends: 829 [2023-12-23 02:02:12,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:02:12,153 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 98 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:12,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 709 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 02:02:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-23 02:02:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 827. [2023-12-23 02:02:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 490 states have (on average 1.4326530612244899) internal successors, (702), 490 states have internal predecessors, (702), 324 states have call successors, (324), 12 states have call predecessors, (324), 12 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-23 02:02:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1350 transitions. [2023-12-23 02:02:12,254 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1350 transitions. Word has length 492 [2023-12-23 02:02:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:12,255 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1350 transitions. [2023-12-23 02:02:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1350 transitions. [2023-12-23 02:02:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-23 02:02:12,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:12,259 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:12,277 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 [2023-12-23 02:02:12,472 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 [2023-12-23 02:02:12,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:12,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1193728701, now seen corresponding path program 1 times [2023-12-23 02:02:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234327767] [2023-12-23 02:02:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:02:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:12,475 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 02:02:12,477 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 02:02:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:13,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:02:13,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-23 02:02:13,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:02:13,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234327767] [2023-12-23 02:02:13,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234327767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:02:13,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:02:13,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:02:13,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116416675] [2023-12-23 02:02:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:02:13,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:02:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:13,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:02:13,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:02:13,243 INFO L87 Difference]: Start difference. First operand 827 states and 1350 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:13,584 INFO L93 Difference]: Finished difference Result 2087 states and 3428 transitions. [2023-12-23 02:02:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:02:13,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 493 [2023-12-23 02:02:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:13,592 INFO L225 Difference]: With dead ends: 2087 [2023-12-23 02:02:13,592 INFO L226 Difference]: Without dead ends: 1261 [2023-12-23 02:02:13,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:02:13,595 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 182 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:13,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 766 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 02:02:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-12-23 02:02:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1255. [2023-12-23 02:02:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 790 states have (on average 1.481012658227848) internal successors, (1170), 794 states have internal predecessors, (1170), 448 states have call successors, (448), 16 states have call predecessors, (448), 16 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2023-12-23 02:02:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 2066 transitions. [2023-12-23 02:02:13,730 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 2066 transitions. Word has length 493 [2023-12-23 02:02:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:13,733 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 2066 transitions. [2023-12-23 02:02:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 2066 transitions. [2023-12-23 02:02:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-23 02:02:13,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:13,738 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:13,761 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 02:02:13,952 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 [2023-12-23 02:02:13,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 796618695, now seen corresponding path program 1 times [2023-12-23 02:02:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:13,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611675913] [2023-12-23 02:02:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:13,954 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 02:02:13,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:13,955 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) [2023-12-23 02:02:13,957 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 (7)] Waiting until timeout for monitored process [2023-12-23 02:02:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:14,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:02:14,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 4304 proven. 48 refuted. 0 times theorem prover too weak. 8608 trivial. 0 not checked. [2023-12-23 02:02:15,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:02:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 192 proven. 48 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-23 02:02:15,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:15,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611675913] [2023-12-23 02:02:15,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611675913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:02:15,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:02:15,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:02:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364881358] [2023-12-23 02:02:15,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:02:15,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:02:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:02:15,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:02:15,783 INFO L87 Difference]: Start difference. First operand 1255 states and 2066 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 02:02:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:17,763 INFO L93 Difference]: Finished difference Result 2557 states and 4175 transitions. [2023-12-23 02:02:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:02:17,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 494 [2023-12-23 02:02:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:17,776 INFO L225 Difference]: With dead ends: 2557 [2023-12-23 02:02:17,776 INFO L226 Difference]: Without dead ends: 1303 [2023-12-23 02:02:17,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 980 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:02:17,781 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 323 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:17,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 567 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 02:02:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2023-12-23 02:02:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1271. [2023-12-23 02:02:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 802 states have (on average 1.4638403990024937) internal successors, (1174), 806 states have internal predecessors, (1174), 448 states have call successors, (448), 20 states have call predecessors, (448), 20 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2023-12-23 02:02:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2070 transitions. [2023-12-23 02:02:17,889 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2070 transitions. Word has length 494 [2023-12-23 02:02:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 2070 transitions. [2023-12-23 02:02:17,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 02:02:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2070 transitions. [2023-12-23 02:02:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-23 02:02:17,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:17,893 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:17,917 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 [2023-12-23 02:02:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:02:18,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:18,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1054784133, now seen corresponding path program 1 times [2023-12-23 02:02:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758693784] [2023-12-23 02:02:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:18,118 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 02:02:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:18,119 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 02:02:18,124 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 02:02:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:18,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 02:02:18,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-23 02:02:23,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:02:23,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:23,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758693784] [2023-12-23 02:02:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758693784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:02:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:02:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 02:02:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903236078] [2023-12-23 02:02:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:02:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 02:02:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 02:02:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 02:02:23,038 INFO L87 Difference]: Start difference. First operand 1271 states and 2070 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:24,125 INFO L93 Difference]: Finished difference Result 3085 states and 5053 transitions. [2023-12-23 02:02:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 02:02:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 494 [2023-12-23 02:02:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:24,136 INFO L225 Difference]: With dead ends: 3085 [2023-12-23 02:02:24,136 INFO L226 Difference]: Without dead ends: 1815 [2023-12-23 02:02:24,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:02:24,141 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 259 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1143 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 02:02:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-12-23 02:02:24,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1693. [2023-12-23 02:02:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1139 states have (on average 1.514486391571554) internal successors, (1725), 1143 states have internal predecessors, (1725), 529 states have call successors, (529), 24 states have call predecessors, (529), 24 states have return successors, (529), 525 states have call predecessors, (529), 529 states have call successors, (529) [2023-12-23 02:02:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2783 transitions. [2023-12-23 02:02:24,335 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2783 transitions. Word has length 494 [2023-12-23 02:02:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:24,335 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2783 transitions. [2023-12-23 02:02:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2783 transitions. [2023-12-23 02:02:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-23 02:02:24,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:24,339 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:24,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 02:02:24,557 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 02:02:24,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:24,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1342581071, now seen corresponding path program 1 times [2023-12-23 02:02:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937773515] [2023-12-23 02:02:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:24,559 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 02:02:24,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:24,573 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 02:02:24,605 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 02:02:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:25,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:02:25,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 1010 proven. 231 refuted. 0 times theorem prover too weak. 11719 trivial. 0 not checked. [2023-12-23 02:02:27,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:02:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 9 proven. 231 refuted. 0 times theorem prover too weak. 12720 trivial. 0 not checked. [2023-12-23 02:02:28,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:28,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937773515] [2023-12-23 02:02:28,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937773515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:02:28,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:02:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 02:02:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153086739] [2023-12-23 02:02:28,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:02:28,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 02:02:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 02:02:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 02:02:28,161 INFO L87 Difference]: Start difference. First operand 1693 states and 2783 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 02:02:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:02:30,172 INFO L93 Difference]: Finished difference Result 3055 states and 4935 transitions. [2023-12-23 02:02:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 02:02:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) Word has length 495 [2023-12-23 02:02:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:02:30,187 INFO L225 Difference]: With dead ends: 3055 [2023-12-23 02:02:30,187 INFO L226 Difference]: Without dead ends: 1785 [2023-12-23 02:02:30,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 981 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 02:02:30,194 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 440 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:02:30,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 558 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 02:02:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2023-12-23 02:02:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1729. [2023-12-23 02:02:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1166 states have (on average 1.4888507718696398) internal successors, (1736), 1170 states have internal predecessors, (1736), 529 states have call successors, (529), 33 states have call predecessors, (529), 33 states have return successors, (529), 525 states have call predecessors, (529), 529 states have call successors, (529) [2023-12-23 02:02:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2794 transitions. [2023-12-23 02:02:30,412 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2794 transitions. Word has length 495 [2023-12-23 02:02:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:02:30,413 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2794 transitions. [2023-12-23 02:02:30,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 02:02:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2794 transitions. [2023-12-23 02:02:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-23 02:02:30,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:02:30,418 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:30,456 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 02:02:30,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:02:30,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:02:30,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:02:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 516468554, now seen corresponding path program 1 times [2023-12-23 02:02:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:02:30,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672830202] [2023-12-23 02:02:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:02:30,639 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 02:02:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:02:30,653 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:02:30,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 02:02:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:02:31,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:02:31,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:02:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2023-12-23 02:02:33,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:02:33,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:02:33,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672830202] [2023-12-23 02:02:33,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672830202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:02:33,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:02:33,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:02:33,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021452673] [2023-12-23 02:02:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:02:33,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:02:33,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:02:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:02:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:02:33,210 INFO L87 Difference]: Start difference. First operand 1729 states and 2794 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:02:35,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:36,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:41,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:45,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:54,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:02:56,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:03:00,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:03:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:03:01,071 INFO L93 Difference]: Finished difference Result 3063 states and 4919 transitions. [2023-12-23 02:03:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:03:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 496 [2023-12-23 02:03:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:03:01,080 INFO L225 Difference]: With dead ends: 3063 [2023-12-23 02:03:01,080 INFO L226 Difference]: Without dead ends: 1761 [2023-12-23 02:03:01,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 02:03:01,085 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 246 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 163 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:03:01,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 801 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 152 Invalid, 2 Unknown, 0 Unchecked, 27.7s Time] [2023-12-23 02:03:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2023-12-23 02:03:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1729. [2023-12-23 02:03:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1166 states have (on average 1.4751286449399656) internal successors, (1720), 1170 states have internal predecessors, (1720), 529 states have call successors, (529), 33 states have call predecessors, (529), 33 states have return successors, (529), 525 states have call predecessors, (529), 529 states have call successors, (529) [2023-12-23 02:03:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2778 transitions. [2023-12-23 02:03:01,242 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2778 transitions. Word has length 496 [2023-12-23 02:03:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:03:01,243 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2778 transitions. [2023-12-23 02:03:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2023-12-23 02:03:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2778 transitions. [2023-12-23 02:03:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-12-23 02:03:01,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:03:01,246 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:01,285 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 (10)] Forceful destruction successful, exit code 0 [2023-12-23 02:03:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:03:01,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:03:01,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:03:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2055897493, now seen corresponding path program 1 times [2023-12-23 02:03:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:03:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483641713] [2023-12-23 02:03:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:03:01,466 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 02:03:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:03:01,467 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 02:03:01,514 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 02:03:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:03:02,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 02:03:02,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 02:10:14,725 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 [2023-12-23 02:10:14,725 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 02:10:16,232 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 (11)] Ended with exit code 0 [2023-12-23 02:10:16,348 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-23 02:10:16,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown