/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-500_file-23.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 04:31:22,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 04:31:22,206 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 04:31:22,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 04:31:22,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 04:31:22,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 04:31:22,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 04:31:22,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 04:31:22,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 04:31:22,241 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 04:31:22,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 04:31:22,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 04:31:22,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 04:31:22,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 04:31:22,243 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 04:31:22,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 04:31:22,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 04:31:22,244 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 04:31:22,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 04:31:22,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 04:31:22,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 04:31:22,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 04:31:22,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 04:31:22,261 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 04:31:22,261 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 04:31:22,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 04:31:22,261 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 04:31:22,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 04:31:22,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 04:31:22,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 04:31:22,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 04:31:22,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 04:31:22,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:31:22,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 04:31:22,263 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 04:31:22,264 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 04:31:22,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 04:31:22,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 04:31:22,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 04:31:22,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 04:31:22,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 04:31:22,460 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 04:31:22,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2023-12-23 04:31:23,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 04:31:23,738 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 04:31:23,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2023-12-23 04:31:23,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9fa8661/883a7b49e64e4bdaad0735a4632533c9/FLAG4188613e5 [2023-12-23 04:31:23,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9fa8661/883a7b49e64e4bdaad0735a4632533c9 [2023-12-23 04:31:23,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 04:31:23,778 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 04:31:23,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 04:31:23,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 04:31:23,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 04:31:23,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:31:23" (1/1) ... [2023-12-23 04:31:23,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3419beb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:23, skipping insertion in model container [2023-12-23 04:31:23,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:31:23" (1/1) ... [2023-12-23 04:31:23,829 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 04:31:23,931 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-500_file-23.i[916,929] [2023-12-23 04:31:24,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:31:24,130 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 04:31:24,139 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-500_file-23.i[916,929] [2023-12-23 04:31:24,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:31:24,238 INFO L206 MainTranslator]: Completed translation [2023-12-23 04:31:24,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24 WrapperNode [2023-12-23 04:31:24,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 04:31:24,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 04:31:24,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 04:31:24,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 04:31:24,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,339 INFO L138 Inliner]: procedures = 27, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 670 [2023-12-23 04:31:24,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 04:31:24,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 04:31:24,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 04:31:24,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 04:31:24,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,390 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 04:31:24,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 04:31:24,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 04:31:24,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 04:31:24,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 04:31:24,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (1/1) ... [2023-12-23 04:31:24,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:31:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 04:31:24,533 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 04:31:24,576 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 04:31:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 04:31:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 04:31:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 04:31:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 04:31:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 04:31:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 04:31:24,716 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 04:31:24,717 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 04:32:25,840 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 04:32:25,891 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 04:32:25,892 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 04:32:25,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:32:25 BoogieIcfgContainer [2023-12-23 04:32:25,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 04:32:25,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 04:32:25,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 04:32:25,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 04:32:25,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:31:23" (1/3) ... [2023-12-23 04:32:25,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f13a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:32:25, skipping insertion in model container [2023-12-23 04:32:25,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:31:24" (2/3) ... [2023-12-23 04:32:25,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f13a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:32:25, skipping insertion in model container [2023-12-23 04:32:25,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:32:25" (3/3) ... [2023-12-23 04:32:25,902 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2023-12-23 04:32:25,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 04:32:25,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 04:32:25,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 04:32:25,983 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;@440ada7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 04:32:25,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 04:32:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 179 states have (on average 1.5977653631284916) internal successors, (286), 180 states have internal predecessors, (286), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 04:32:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:32:26,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:32:26,026 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:26,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:32:26,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:32:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2045659857, now seen corresponding path program 1 times [2023-12-23 04:32:26,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:32:26,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775113274] [2023-12-23 04:32:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:32:26,053 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 04:32:26,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:32:26,056 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 04:32:26,078 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 04:32:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:32:29,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 04:32:29,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:32:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9162 proven. 0 refuted. 0 times theorem prover too weak. 9850 trivial. 0 not checked. [2023-12-23 04:32:29,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:32:29,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:32:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775113274] [2023-12-23 04:32:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775113274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:32:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:32:29,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:32:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844418338] [2023-12-23 04:32:29,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:32:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 04:32:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:32:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 04:32:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:32:29,411 INFO L87 Difference]: Start difference. First operand has 280 states, 179 states have (on average 1.5977653631284916) internal successors, (286), 180 states have internal predecessors, (286), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 04:32:31,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:32:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:32:31,119 INFO L93 Difference]: Finished difference Result 556 states and 1058 transitions. [2023-12-23 04:32:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 04:32:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 623 [2023-12-23 04:32:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:32:31,162 INFO L225 Difference]: With dead ends: 556 [2023-12-23 04:32:31,162 INFO L226 Difference]: Without dead ends: 277 [2023-12-23 04:32:31,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:32:31,171 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 04:32:31,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 468 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 04:32:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-23 04:32:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-12-23 04:32:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 177 states have (on average 1.5536723163841808) internal successors, (275), 177 states have internal predecessors, (275), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 04:32:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 471 transitions. [2023-12-23 04:32:31,226 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 471 transitions. Word has length 623 [2023-12-23 04:32:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:32:31,227 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 471 transitions. [2023-12-23 04:32:31,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 04:32:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 471 transitions. [2023-12-23 04:32:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:32:31,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:32:31,280 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:31,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 04:32:31,508 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 04:32:31,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:32:31,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:32:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 605165533, now seen corresponding path program 1 times [2023-12-23 04:32:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:32:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563716810] [2023-12-23 04:32:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:32:31,512 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 04:32:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:32:31,518 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 04:32:31,519 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 04:32:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:32:34,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 04:32:34,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:32:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9704 proven. 249 refuted. 0 times theorem prover too weak. 9059 trivial. 0 not checked. [2023-12-23 04:32:47,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:32:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 327 proven. 252 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-23 04:32:53,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:32:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563716810] [2023-12-23 04:32:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563716810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:32:53,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:32:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-23 04:32:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312119287] [2023-12-23 04:32:53,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:32:53,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 04:32:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:32:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 04:32:53,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:32:53,555 INFO L87 Difference]: Start difference. First operand 277 states and 471 transitions. Second operand has 14 states, 14 states have (on average 11.785714285714286) internal successors, (165), 14 states have internal predecessors, (165), 3 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2023-12-23 04:33:09,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:33:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:33:26,390 INFO L93 Difference]: Finished difference Result 1230 states and 2056 transitions. [2023-12-23 04:33:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-23 04:33:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.785714285714286) internal successors, (165), 14 states have internal predecessors, (165), 3 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) Word has length 623 [2023-12-23 04:33:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:33:26,400 INFO L225 Difference]: With dead ends: 1230 [2023-12-23 04:33:26,400 INFO L226 Difference]: Without dead ends: 954 [2023-12-23 04:33:26,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1235 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=500, Invalid=1306, Unknown=0, NotChecked=0, Total=1806 [2023-12-23 04:33:26,403 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 2437 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 1330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1330 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:33:26,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 2453 Invalid, 3340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1330 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 28.1s Time] [2023-12-23 04:33:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-12-23 04:33:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 654. [2023-12-23 04:33:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 397 states have (on average 1.4811083123425692) internal successors, (588), 398 states have internal predecessors, (588), 250 states have call successors, (250), 6 states have call predecessors, (250), 6 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2023-12-23 04:33:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1088 transitions. [2023-12-23 04:33:26,510 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1088 transitions. Word has length 623 [2023-12-23 04:33:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:33:26,511 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1088 transitions. [2023-12-23 04:33:26,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.785714285714286) internal successors, (165), 14 states have internal predecessors, (165), 3 states have call successors, (141), 3 states have call predecessors, (141), 7 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2023-12-23 04:33:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1088 transitions. [2023-12-23 04:33:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:33:26,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:33:26,521 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:26,590 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 04:33:26,736 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 04:33:26,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:33:26,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:33:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 28947037, now seen corresponding path program 1 times [2023-12-23 04:33:26,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:33:26,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565848281] [2023-12-23 04:33:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:33:26,739 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 04:33:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:33:26,740 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 04:33:26,741 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 04:33:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:33:29,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:33:29,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:33:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9183 proven. 114 refuted. 0 times theorem prover too weak. 9715 trivial. 0 not checked. [2023-12-23 04:33:36,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:33:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 177 proven. 114 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 04:33:40,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:33:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565848281] [2023-12-23 04:33:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565848281] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:33:40,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:33:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 04:33:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229128680] [2023-12-23 04:33:40,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:33:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 04:33:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:33:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 04:33:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:33:40,253 INFO L87 Difference]: Start difference. First operand 654 states and 1088 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-23 04:33:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:33:48,193 INFO L93 Difference]: Finished difference Result 1236 states and 2046 transitions. [2023-12-23 04:33:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 04:33:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 623 [2023-12-23 04:33:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:33:48,230 INFO L225 Difference]: With dead ends: 1236 [2023-12-23 04:33:48,231 INFO L226 Difference]: Without dead ends: 670 [2023-12-23 04:33:48,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1238 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-23 04:33:48,233 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 699 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:33:48,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 855 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-23 04:33:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-23 04:33:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 660. [2023-12-23 04:33:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 401 states have (on average 1.4463840399002494) internal successors, (580), 402 states have internal predecessors, (580), 250 states have call successors, (250), 8 states have call predecessors, (250), 8 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2023-12-23 04:33:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1080 transitions. [2023-12-23 04:33:48,301 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1080 transitions. Word has length 623 [2023-12-23 04:33:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:33:48,302 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1080 transitions. [2023-12-23 04:33:48,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-23 04:33:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1080 transitions. [2023-12-23 04:33:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:33:48,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:33:48,310 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:48,371 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 04:33:48,524 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 04:33:48,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:33:48,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:33:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2063247199, now seen corresponding path program 1 times [2023-12-23 04:33:48,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:33:48,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569234064] [2023-12-23 04:33:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:33:48,551 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 04:33:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:33:48,553 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 04:33:48,584 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 04:33:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:33:51,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 04:33:51,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:34:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12446 proven. 240 refuted. 0 times theorem prover too weak. 6326 trivial. 0 not checked. [2023-12-23 04:34:05,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:34:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 213 proven. 78 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 04:34:08,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:34:08,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569234064] [2023-12-23 04:34:08,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569234064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:34:08,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:34:08,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-23 04:34:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286254162] [2023-12-23 04:34:08,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:34:08,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-23 04:34:08,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:34:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-23 04:34:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-23 04:34:08,969 INFO L87 Difference]: Start difference. First operand 660 states and 1080 transitions. Second operand has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 4 states have call successors, (153), 3 states have call predecessors, (153), 6 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-23 04:34:32,190 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 [0] [2023-12-23 04:34:38,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:34:41,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:34:44,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:34:48,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:34:51,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:35:01,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 04:35:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:35:14,872 INFO L93 Difference]: Finished difference Result 2196 states and 3500 transitions. [2023-12-23 04:35:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-23 04:35:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 4 states have call successors, (153), 3 states have call predecessors, (153), 6 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) Word has length 623 [2023-12-23 04:35:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:35:14,884 INFO L225 Difference]: With dead ends: 2196 [2023-12-23 04:35:14,884 INFO L226 Difference]: Without dead ends: 1624 [2023-12-23 04:35:14,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1232 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=687, Invalid=1863, Unknown=0, NotChecked=0, Total=2550 [2023-12-23 04:35:14,889 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1684 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 1242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:35:14,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 2215 Invalid, 3802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1242 Valid, 2559 Invalid, 1 Unknown, 0 Unchecked, 58.3s Time] [2023-12-23 04:35:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-12-23 04:35:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1374. [2023-12-23 04:35:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 878 states have (on average 1.4464692482915718) internal successors, (1270), 882 states have internal predecessors, (1270), 463 states have call successors, (463), 32 states have call predecessors, (463), 32 states have return successors, (463), 459 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-23 04:35:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2196 transitions. [2023-12-23 04:35:15,043 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2196 transitions. Word has length 623 [2023-12-23 04:35:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:35:15,045 INFO L495 AbstractCegarLoop]: Abstraction has 1374 states and 2196 transitions. [2023-12-23 04:35:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 4 states have call successors, (153), 3 states have call predecessors, (153), 6 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2023-12-23 04:35:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2196 transitions. [2023-12-23 04:35:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:35:15,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:35:15,050 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:15,115 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 04:35:15,264 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 04:35:15,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:35:15,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:35:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1639600477, now seen corresponding path program 1 times [2023-12-23 04:35:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:35:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609184251] [2023-12-23 04:35:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:35:15,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:35:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:35:15,277 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 04:35:15,311 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 04:35:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:35:17,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:35:17,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:35:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:35:31,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:35:31,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:35:31,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609184251] [2023-12-23 04:35:31,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609184251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:35:31,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:35:31,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:35:31,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121636280] [2023-12-23 04:35:31,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:35:31,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:35:31,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:35:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:35:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:35:31,087 INFO L87 Difference]: Start difference. First operand 1374 states and 2196 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:35:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:35:32,105 INFO L93 Difference]: Finished difference Result 2656 states and 4247 transitions. [2023-12-23 04:35:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:35:32,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 623 [2023-12-23 04:35:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:35:32,146 INFO L225 Difference]: With dead ends: 2656 [2023-12-23 04:35:32,147 INFO L226 Difference]: Without dead ends: 1374 [2023-12-23 04:35:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:35:32,150 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 04:35:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 454 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 04:35:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-12-23 04:35:32,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1374. [2023-12-23 04:35:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 878 states have (on average 1.4350797266514805) internal successors, (1260), 882 states have internal predecessors, (1260), 463 states have call successors, (463), 32 states have call predecessors, (463), 32 states have return successors, (463), 459 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-23 04:35:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2186 transitions. [2023-12-23 04:35:32,310 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2186 transitions. Word has length 623 [2023-12-23 04:35:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:35:32,310 INFO L495 AbstractCegarLoop]: Abstraction has 1374 states and 2186 transitions. [2023-12-23 04:35:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:35:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2186 transitions. [2023-12-23 04:35:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:35:32,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:35:32,315 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:32,378 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 04:35:32,533 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 04:35:32,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:35:32,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:35:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1283559521, now seen corresponding path program 1 times [2023-12-23 04:35:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:35:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270005501] [2023-12-23 04:35:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:35:32,535 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 04:35:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:35:32,537 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 04:35:32,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 04:35:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:35:35,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:35:35,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:35:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9003 proven. 108 refuted. 0 times theorem prover too weak. 9901 trivial. 0 not checked. [2023-12-23 04:35:41,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:35:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 183 proven. 108 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 04:35:45,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:35:45,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270005501] [2023-12-23 04:35:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270005501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:35:45,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:35:45,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 04:35:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457908830] [2023-12-23 04:35:45,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:35:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 04:35:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:35:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 04:35:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:35:45,599 INFO L87 Difference]: Start difference. First operand 1374 states and 2186 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-23 04:35:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:35:53,631 INFO L93 Difference]: Finished difference Result 2728 states and 4294 transitions. [2023-12-23 04:35:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:35:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) Word has length 623 [2023-12-23 04:35:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:35:53,679 INFO L225 Difference]: With dead ends: 2728 [2023-12-23 04:35:53,679 INFO L226 Difference]: Without dead ends: 1446 [2023-12-23 04:35:53,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1238 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 04:35:53,683 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 247 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:35:53,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 846 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-23 04:35:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-23 04:35:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1394. [2023-12-23 04:35:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 893 states have (on average 1.412094064949608) internal successors, (1261), 897 states have internal predecessors, (1261), 463 states have call successors, (463), 37 states have call predecessors, (463), 37 states have return successors, (463), 459 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-23 04:35:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2187 transitions. [2023-12-23 04:35:53,844 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2187 transitions. Word has length 623 [2023-12-23 04:35:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:35:53,845 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 2187 transitions. [2023-12-23 04:35:53,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 2 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 2 states have call predecessors, (135), 2 states have call successors, (135) [2023-12-23 04:35:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2187 transitions. [2023-12-23 04:35:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-23 04:35:53,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:35:53,850 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:53,911 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 04:35:54,072 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 04:35:54,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:35:54,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:35:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -51053663, now seen corresponding path program 1 times [2023-12-23 04:35:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:35:54,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723533344] [2023-12-23 04:35:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:35:54,074 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 04:35:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:35:54,075 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 04:35:54,077 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 04:35:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:35:56,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-23 04:35:56,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:40:31,795 WARN L293 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)