/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-49.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 04:56:20,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 04:56:20,253 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 04:56:20,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 04:56:20,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 04:56:20,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 04:56:20,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 04:56:20,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 04:56:20,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 04:56:20,287 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 04:56:20,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 04:56:20,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 04:56:20,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 04:56:20,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 04:56:20,290 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 04:56:20,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 04:56:20,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 04:56:20,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 04:56:20,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 04:56:20,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 04:56:20,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 04:56:20,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 04:56:20,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 04:56:20,293 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 04:56:20,294 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 04:56:20,294 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 04:56:20,294 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 04:56:20,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 04:56:20,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 04:56:20,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 04:56:20,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 04:56:20,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 04:56:20,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 04:56:20,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 04:56:20,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:56:20,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 04:56:20,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 04:56:20,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 04:56:20,297 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 04:56:20,297 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 04:56:20,298 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 04:56:20,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 04:56:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 04:56:20,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 04:56:20,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 04:56:20,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 04:56:20,575 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 04:56:20,577 INFO L431 ainManager$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-49.i [2023-12-23 04:56:21,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 04:56:22,100 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 04:56:22,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-12-23 04:56:22,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2650229f/50f761d9b6f5449f8174cfbcc10cd876/FLAGf0bb01eb4 [2023-12-23 04:56:22,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2650229f/50f761d9b6f5449f8174cfbcc10cd876 [2023-12-23 04:56:22,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 04:56:22,153 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 04:56:22,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 04:56:22,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 04:56:22,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 04:56:22,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f77c12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22, skipping insertion in model container [2023-12-23 04:56:22,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 04:56:22,364 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-49.i[916,929] [2023-12-23 04:56:22,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:56:22,562 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 04:56:22,571 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-49.i[916,929] [2023-12-23 04:56:22,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:56:22,641 INFO L206 MainTranslator]: Completed translation [2023-12-23 04:56:22,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22 WrapperNode [2023-12-23 04:56:22,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 04:56:22,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 04:56:22,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 04:56:22,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 04:56:22,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,743 INFO L138 Inliner]: procedures = 27, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 679 [2023-12-23 04:56:22,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 04:56:22,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 04:56:22,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 04:56:22,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 04:56:22,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,794 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 04:56:22,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 04:56:22,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 04:56:22,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 04:56:22,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 04:56:22,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (1/1) ... [2023-12-23 04:56:22,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:56:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 04:56:22,918 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 04:56:22,945 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 04:56:22,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 04:56:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 04:56:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 04:56:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 04:56:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 04:56:22,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 04:56:23,075 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 04:56:23,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 04:56:34,164 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 04:56:34,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 04:56:34,231 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 04:56:34,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:56:34 BoogieIcfgContainer [2023-12-23 04:56:34,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 04:56:34,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 04:56:34,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 04:56:34,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 04:56:34,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:56:22" (1/3) ... [2023-12-23 04:56:34,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e05767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:56:34, skipping insertion in model container [2023-12-23 04:56:34,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:56:22" (2/3) ... [2023-12-23 04:56:34,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e05767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:56:34, skipping insertion in model container [2023-12-23 04:56:34,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:56:34" (3/3) ... [2023-12-23 04:56:34,239 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-12-23 04:56:34,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 04:56:34,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 04:56:34,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 04:56:34,302 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;@1b8b09f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 04:56:34,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 04:56:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-23 04:56:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2023-12-23 04:56:34,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:34,383 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:34,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:34,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1263114680, now seen corresponding path program 1 times [2023-12-23 04:56:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858349367] [2023-12-23 04:56:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:34,420 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 04:56:34,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:34,421 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 04:56:34,427 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 04:56:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:35,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 04:56:35,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10322 proven. 0 refuted. 0 times theorem prover too weak. 10282 trivial. 0 not checked. [2023-12-23 04:56:35,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:35,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:35,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858349367] [2023-12-23 04:56:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858349367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:35,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:56:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:56:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441360205] [2023-12-23 04:56:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:35,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 04:56:35,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:35,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 04:56:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:56:35,667 INFO L87 Difference]: Start difference. First operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 04:56:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:35,789 INFO L93 Difference]: Finished difference Result 566 states and 1082 transitions. [2023-12-23 04:56:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 04:56:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 647 [2023-12-23 04:56:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:35,809 INFO L225 Difference]: With dead ends: 566 [2023-12-23 04:56:35,809 INFO L226 Difference]: Without dead ends: 282 [2023-12-23 04:56:35,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 646 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 04:56:35,816 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:35,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:56:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-23 04:56:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-23 04:56:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-23 04:56:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 481 transitions. [2023-12-23 04:56:35,898 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 481 transitions. Word has length 647 [2023-12-23 04:56:35,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:35,899 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 481 transitions. [2023-12-23 04:56:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 04:56:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 481 transitions. [2023-12-23 04:56:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-23 04:56:35,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:35,913 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:35,951 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 04:56:36,132 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 04:56:36,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:36,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1128107433, now seen corresponding path program 1 times [2023-12-23 04:56:36,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:36,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325528775] [2023-12-23 04:56:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:36,135 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 04:56:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:36,137 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 04:56:36,203 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 04:56:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:37,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:56:37,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:56:37,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:37,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:37,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325528775] [2023-12-23 04:56:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325528775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:37,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:56:37,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 04:56:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280748220] [2023-12-23 04:56:37,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:56:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:56:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:56:37,596 INFO L87 Difference]: Start difference. First operand 282 states and 481 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:38,273 INFO L93 Difference]: Finished difference Result 725 states and 1241 transitions. [2023-12-23 04:56:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:56:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-12-23 04:56:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:38,279 INFO L225 Difference]: With dead ends: 725 [2023-12-23 04:56:38,279 INFO L226 Difference]: Without dead ends: 444 [2023-12-23 04:56:38,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 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 04:56:38,282 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 240 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 939 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 04:56:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-23 04:56:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2023-12-23 04:56:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 299 states have (on average 1.585284280936455) internal successors, (474), 300 states have internal predecessors, (474), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 138 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-23 04:56:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 752 transitions. [2023-12-23 04:56:38,328 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 752 transitions. Word has length 648 [2023-12-23 04:56:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:38,330 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 752 transitions. [2023-12-23 04:56:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 752 transitions. [2023-12-23 04:56:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-23 04:56:38,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:38,335 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:38,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 04:56:38,560 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 04:56:38,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:38,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1262120939, now seen corresponding path program 1 times [2023-12-23 04:56:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299136327] [2023-12-23 04:56:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:38,563 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 04:56:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:38,564 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 04:56:38,566 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 04:56:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:39,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:56:39,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:56:40,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:40,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299136327] [2023-12-23 04:56:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299136327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:40,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:56:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 04:56:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940224837] [2023-12-23 04:56:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:40,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:56:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:56:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:56:40,020 INFO L87 Difference]: Start difference. First operand 441 states and 752 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:41,096 INFO L93 Difference]: Finished difference Result 895 states and 1518 transitions. [2023-12-23 04:56:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:56:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-12-23 04:56:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:41,100 INFO L225 Difference]: With dead ends: 895 [2023-12-23 04:56:41,100 INFO L226 Difference]: Without dead ends: 455 [2023-12-23 04:56:41,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 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 04:56:41,103 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 246 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:41,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1004 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 04:56:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-23 04:56:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 362. [2023-12-23 04:56:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 257 states have (on average 1.575875486381323) internal successors, (405), 257 states have internal predecessors, (405), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-23 04:56:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 609 transitions. [2023-12-23 04:56:41,123 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 609 transitions. Word has length 648 [2023-12-23 04:56:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:41,124 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 609 transitions. [2023-12-23 04:56:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 609 transitions. [2023-12-23 04:56:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-23 04:56:41,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:41,131 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:41,164 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 04:56:41,344 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 04:56:41,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:41,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash 156247719, now seen corresponding path program 1 times [2023-12-23 04:56:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152098800] [2023-12-23 04:56:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:41,347 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 04:56:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:41,353 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 04:56:41,361 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 04:56:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:42,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:56:42,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:56:42,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:42,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152098800] [2023-12-23 04:56:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152098800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:42,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:56:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-23 04:56:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639649982] [2023-12-23 04:56:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:56:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:56:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 04:56:42,975 INFO L87 Difference]: Start difference. First operand 362 states and 609 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:46,777 INFO L93 Difference]: Finished difference Result 1382 states and 2317 transitions. [2023-12-23 04:56:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 04:56:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 649 [2023-12-23 04:56:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:46,787 INFO L225 Difference]: With dead ends: 1382 [2023-12-23 04:56:46,787 INFO L226 Difference]: Without dead ends: 1021 [2023-12-23 04:56:46,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-23 04:56:46,789 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1546 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:46,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1757 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-23 04:56:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-23 04:56:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 753. [2023-12-23 04:56:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 498 states have (on average 1.5301204819277108) internal successors, (762), 500 states have internal predecessors, (762), 247 states have call successors, (247), 7 states have call predecessors, (247), 7 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-23 04:56:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1256 transitions. [2023-12-23 04:56:46,854 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1256 transitions. Word has length 649 [2023-12-23 04:56:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:46,856 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1256 transitions. [2023-12-23 04:56:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1256 transitions. [2023-12-23 04:56:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-23 04:56:46,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:46,861 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:46,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 04:56:47,088 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 04:56:47,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash -724601617, now seen corresponding path program 1 times [2023-12-23 04:56:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393283198] [2023-12-23 04:56:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:47,091 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 04:56:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:47,101 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 04:56:47,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 04:56:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:48,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:56:48,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 8597 proven. 87 refuted. 0 times theorem prover too weak. 11920 trivial. 0 not checked. [2023-12-23 04:56:48,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:56:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 216 proven. 87 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-12-23 04:56:49,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393283198] [2023-12-23 04:56:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393283198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:56:49,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:56:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 04:56:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557670050] [2023-12-23 04:56:49,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:56:49,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 04:56:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 04:56:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:56:49,480 INFO L87 Difference]: Start difference. First operand 753 states and 1256 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-23 04:56:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:51,044 INFO L93 Difference]: Finished difference Result 1459 states and 2421 transitions. [2023-12-23 04:56:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:56:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 649 [2023-12-23 04:56:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:51,059 INFO L225 Difference]: With dead ends: 1459 [2023-12-23 04:56:51,059 INFO L226 Difference]: Without dead ends: 779 [2023-12-23 04:56:51,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1290 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 04:56:51,064 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 288 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 900 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 04:56:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-23 04:56:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 761. [2023-12-23 04:56:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 504 states have (on average 1.5119047619047619) internal successors, (762), 506 states have internal predecessors, (762), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-23 04:56:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1256 transitions. [2023-12-23 04:56:51,115 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1256 transitions. Word has length 649 [2023-12-23 04:56:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:51,117 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1256 transitions. [2023-12-23 04:56:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-23 04:56:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1256 transitions. [2023-12-23 04:56:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-12-23 04:56:51,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:51,127 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:51,159 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 04:56:51,353 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 04:56:51,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:51,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash -958980496, now seen corresponding path program 1 times [2023-12-23 04:56:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059055410] [2023-12-23 04:56:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:51,355 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 04:56:51,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:51,357 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 04:56:51,358 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 04:56:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:52,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:56:52,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:56:52,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:52,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059055410] [2023-12-23 04:56:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059055410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:52,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:56:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 04:56:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503562500] [2023-12-23 04:56:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:56:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:56:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:56:52,793 INFO L87 Difference]: Start difference. First operand 761 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:53,108 INFO L93 Difference]: Finished difference Result 2137 states and 3538 transitions. [2023-12-23 04:56:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:56:53,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 650 [2023-12-23 04:56:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:53,117 INFO L225 Difference]: With dead ends: 2137 [2023-12-23 04:56:53,117 INFO L226 Difference]: Without dead ends: 1449 [2023-12-23 04:56:53,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 648 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 04:56:53,124 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 461 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:53,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1368 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 04:56:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-12-23 04:56:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 802. [2023-12-23 04:56:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 545 states have (on average 1.5321100917431192) internal successors, (835), 547 states have internal predecessors, (835), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-23 04:56:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1329 transitions. [2023-12-23 04:56:53,191 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1329 transitions. Word has length 650 [2023-12-23 04:56:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:53,192 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1329 transitions. [2023-12-23 04:56:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1329 transitions. [2023-12-23 04:56:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-23 04:56:53,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:53,197 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:53,244 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 04:56:53,413 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 04:56:53,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:53,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash -430014752, now seen corresponding path program 1 times [2023-12-23 04:56:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781715563] [2023-12-23 04:56:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:53,415 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 04:56:53,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:53,418 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 04:56:53,452 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 04:56:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:54,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:56:54,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:56:55,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:56:55,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:56:55,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781715563] [2023-12-23 04:56:55,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781715563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:56:55,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1124980716] [2023-12-23 04:56:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:55,881 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:56:55,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:56:55,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:56:55,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 04:56:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:57,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:56:57,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:56:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:56:57,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:56:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1124980716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:56:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:56:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 04:56:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847350662] [2023-12-23 04:56:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:56:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:56:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:56:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:56:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:56:57,867 INFO L87 Difference]: Start difference. First operand 802 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:56:58,114 INFO L93 Difference]: Finished difference Result 2205 states and 3654 transitions. [2023-12-23 04:56:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:56:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-23 04:56:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:56:58,121 INFO L225 Difference]: With dead ends: 2205 [2023-12-23 04:56:58,121 INFO L226 Difference]: Without dead ends: 1476 [2023-12-23 04:56:58,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:56:58,124 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 470 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:56:58,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1027 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 04:56:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-12-23 04:56:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1237. [2023-12-23 04:56:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 874 states have (on average 1.55720823798627) internal successors, (1361), 876 states have internal predecessors, (1361), 349 states have call successors, (349), 13 states have call predecessors, (349), 13 states have return successors, (349), 347 states have call predecessors, (349), 349 states have call successors, (349) [2023-12-23 04:56:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2059 transitions. [2023-12-23 04:56:58,222 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2059 transitions. Word has length 651 [2023-12-23 04:56:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:56:58,223 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2059 transitions. [2023-12-23 04:56:58,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:56:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2059 transitions. [2023-12-23 04:56:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-23 04:56:58,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:56:58,228 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:58,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-23 04:56:58,498 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 04:56:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 04:56:58,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:56:58,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:56:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -852716578, now seen corresponding path program 1 times [2023-12-23 04:56:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:56:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398840758] [2023-12-23 04:56:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:56:58,641 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 04:56:58,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:56:58,645 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 04:56:58,689 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 04:56:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:56:59,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:56:59,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:57:00,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:00,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:00,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398840758] [2023-12-23 04:57:00,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398840758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:00,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [647236029] [2023-12-23 04:57:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:00,885 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:00,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:00,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:00,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 04:57:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:02,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:57:02,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:57:02,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [647236029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-23 04:57:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047456226] [2023-12-23 04:57:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:57:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:57:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:57:02,673 INFO L87 Difference]: Start difference. First operand 1237 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:03,127 INFO L93 Difference]: Finished difference Result 3104 states and 5184 transitions. [2023-12-23 04:57:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:57:03,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-23 04:57:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:03,136 INFO L225 Difference]: With dead ends: 3104 [2023-12-23 04:57:03,136 INFO L226 Difference]: Without dead ends: 1940 [2023-12-23 04:57:03,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:57:03,140 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 255 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:03,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1119 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 04:57:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-12-23 04:57:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1935. [2023-12-23 04:57:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1398 states have (on average 1.5701001430615165) internal successors, (2195), 1403 states have internal predecessors, (2195), 514 states have call successors, (514), 22 states have call predecessors, (514), 22 states have return successors, (514), 509 states have call predecessors, (514), 514 states have call successors, (514) [2023-12-23 04:57:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3223 transitions. [2023-12-23 04:57:03,261 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3223 transitions. Word has length 651 [2023-12-23 04:57:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:03,261 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 3223 transitions. [2023-12-23 04:57:03,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3223 transitions. [2023-12-23 04:57:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-23 04:57:03,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:03,267 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:03,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:03,506 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 04:57:03,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 04:57:03,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:03,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1439522592, now seen corresponding path program 1 times [2023-12-23 04:57:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768796359] [2023-12-23 04:57:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:03,678 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 04:57:03,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:03,697 INFO L229 MonitoredProcess]: Starting monitored process 12 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 04:57:03,700 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 (12)] Waiting until timeout for monitored process [2023-12-23 04:57:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:04,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:57:04,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:57:05,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:05,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768796359] [2023-12-23 04:57:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768796359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261901495] [2023-12-23 04:57:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:05,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:05,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:05,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:05,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 04:57:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:07,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:57:07,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:57:08,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:08,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [261901495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:08,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:08,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 04:57:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957915829] [2023-12-23 04:57:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:08,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:57:08,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:57:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:57:08,770 INFO L87 Difference]: Start difference. First operand 1935 states and 3223 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:09,443 INFO L93 Difference]: Finished difference Result 4883 states and 8231 transitions. [2023-12-23 04:57:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 04:57:09,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-23 04:57:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:09,463 INFO L225 Difference]: With dead ends: 4883 [2023-12-23 04:57:09,464 INFO L226 Difference]: Without dead ends: 3021 [2023-12-23 04:57:09,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-23 04:57:09,469 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 411 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:09,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1424 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 04:57:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-12-23 04:57:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2137. [2023-12-23 04:57:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1703 states have (on average 1.6288901937756899) internal successors, (2774), 1705 states have internal predecessors, (2774), 416 states have call successors, (416), 17 states have call predecessors, (416), 17 states have return successors, (416), 414 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-23 04:57:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3606 transitions. [2023-12-23 04:57:09,585 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3606 transitions. Word has length 651 [2023-12-23 04:57:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:09,586 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3606 transitions. [2023-12-23 04:57:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3606 transitions. [2023-12-23 04:57:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-23 04:57:09,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:09,591 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:09,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:09,829 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 (12)] Ended with exit code 0 [2023-12-23 04:57:10,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /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 04:57:10,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:10,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1497196462, now seen corresponding path program 1 times [2023-12-23 04:57:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907165897] [2023-12-23 04:57:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:10,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:57:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:10,003 INFO L229 MonitoredProcess]: Starting monitored process 14 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 04:57:10,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-23 04:57:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:11,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:57:11,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:57:11,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:11,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907165897] [2023-12-23 04:57:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907165897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [530039320] [2023-12-23 04:57:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:11,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:11,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:11,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:11,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 04:57:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:15,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:57:15,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-23 04:57:16,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:57:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [530039320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:57:16,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:57:16,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-23 04:57:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429640823] [2023-12-23 04:57:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:57:16,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:57:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:57:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:57:16,839 INFO L87 Difference]: Start difference. First operand 2137 states and 3606 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:18,775 INFO L93 Difference]: Finished difference Result 7147 states and 12046 transitions. [2023-12-23 04:57:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 04:57:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 652 [2023-12-23 04:57:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:18,799 INFO L225 Difference]: With dead ends: 7147 [2023-12-23 04:57:18,799 INFO L226 Difference]: Without dead ends: 5713 [2023-12-23 04:57:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 04:57:18,804 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 709 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1273 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 04:57:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2023-12-23 04:57:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5707. [2023-12-23 04:57:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 4617 states have (on average 1.6356941737058697) internal successors, (7552), 4623 states have internal predecessors, (7552), 1044 states have call successors, (1044), 45 states have call predecessors, (1044), 45 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-12-23 04:57:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 9640 transitions. [2023-12-23 04:57:19,134 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 9640 transitions. Word has length 652 [2023-12-23 04:57:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 5707 states and 9640 transitions. [2023-12-23 04:57:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-23 04:57:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 9640 transitions. [2023-12-23 04:57:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-23 04:57:19,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:19,142 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:19,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:19,387 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 (14)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:19,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 04:57:19,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash -110993068, now seen corresponding path program 1 times [2023-12-23 04:57:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098321562] [2023-12-23 04:57:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:19,559 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 04:57:19,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:19,561 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:19,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-23 04:57:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:20,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:57:20,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:57:21,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:21,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098321562] [2023-12-23 04:57:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098321562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [220210979] [2023-12-23 04:57:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:57:21,611 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:57:21,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 04:57:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:28,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:57:28,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-23 04:57:28,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [220210979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:57:28,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:57:28,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 04:57:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740694148] [2023-12-23 04:57:28,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:57:28,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 04:57:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 04:57:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-23 04:57:28,974 INFO L87 Difference]: Start difference. First operand 5707 states and 9640 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 04:57:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:31,056 INFO L93 Difference]: Finished difference Result 10093 states and 16837 transitions. [2023-12-23 04:57:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 04:57:31,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 652 [2023-12-23 04:57:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:31,095 INFO L225 Difference]: With dead ends: 10093 [2023-12-23 04:57:31,096 INFO L226 Difference]: Without dead ends: 5849 [2023-12-23 04:57:31,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 04:57:31,105 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 229 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 865 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 04:57:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2023-12-23 04:57:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 4915. [2023-12-23 04:57:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 3812 states have (on average 1.594700944386149) internal successors, (6079), 3818 states have internal predecessors, (6079), 1044 states have call successors, (1044), 58 states have call predecessors, (1044), 58 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-12-23 04:57:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 8167 transitions. [2023-12-23 04:57:31,466 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 8167 transitions. Word has length 652 [2023-12-23 04:57:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:31,467 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 8167 transitions. [2023-12-23 04:57:31,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-23 04:57:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 8167 transitions. [2023-12-23 04:57:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-23 04:57:31,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:31,474 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:31,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:31,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-23 04:57:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:57:31,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2115353517, now seen corresponding path program 1 times [2023-12-23 04:57:31,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:31,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410977757] [2023-12-23 04:57:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:31,890 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 04:57:31,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:31,892 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:31,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-23 04:57:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:33,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 04:57:33,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:57:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9602 proven. 183 refuted. 0 times theorem prover too weak. 10819 trivial. 0 not checked. [2023-12-23 04:57:34,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:57:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 417 proven. 186 refuted. 0 times theorem prover too weak. 20001 trivial. 0 not checked. [2023-12-23 04:57:35,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:57:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410977757] [2023-12-23 04:57:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410977757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:57:35,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:57:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 04:57:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064273830] [2023-12-23 04:57:35,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:57:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 04:57:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:57:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 04:57:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:57:35,101 INFO L87 Difference]: Start difference. First operand 4915 states and 8167 transitions. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) [2023-12-23 04:57:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:57:38,542 INFO L93 Difference]: Finished difference Result 9629 states and 15879 transitions. [2023-12-23 04:57:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-23 04:57:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) Word has length 652 [2023-12-23 04:57:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:57:38,559 INFO L225 Difference]: With dead ends: 9629 [2023-12-23 04:57:38,559 INFO L226 Difference]: Without dead ends: 6029 [2023-12-23 04:57:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1292 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 04:57:38,568 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1714 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-23 04:57:38,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 1760 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-23 04:57:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2023-12-23 04:57:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5805. [2023-12-23 04:57:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 4688 states have (on average 1.6205204778156996) internal successors, (7597), 4694 states have internal predecessors, (7597), 1044 states have call successors, (1044), 72 states have call predecessors, (1044), 72 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-12-23 04:57:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 9685 transitions. [2023-12-23 04:57:38,929 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 9685 transitions. Word has length 652 [2023-12-23 04:57:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:57:38,930 INFO L495 AbstractCegarLoop]: Abstraction has 5805 states and 9685 transitions. [2023-12-23 04:57:38,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 3 states have call successors, (135), 3 states have call predecessors, (135), 7 states have return successors, (136), 3 states have call predecessors, (136), 3 states have call successors, (136) [2023-12-23 04:57:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 9685 transitions. [2023-12-23 04:57:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-23 04:57:38,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:57:38,936 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:38,970 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 (18)] Ended with exit code 0 [2023-12-23 04:57:39,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:57:39,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:57:39,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:57:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1607810479, now seen corresponding path program 1 times [2023-12-23 04:57:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:57:39,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169391464] [2023-12-23 04:57:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:57:39,167 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 04:57:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:57:39,168 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:57:39,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-23 04:57:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:57:40,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-23 04:57:40,492 INFO L285 TraceCheckSpWp]: Computing forward predicates...