/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-100_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 00:28:39,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 00:28:39,706 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 00:28:39,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 00:28:39,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 00:28:39,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 00:28:39,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 00:28:39,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 00:28:39,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 00:28:39,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 00:28:39,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 00:28:39,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 00:28:39,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 00:28:39,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 00:28:39,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 00:28:39,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 00:28:39,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 00:28:39,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 00:28:39,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 00:28:39,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 00:28:39,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 00:28:39,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 00:28:39,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 00:28:39,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 00:28:39,755 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 00:28:39,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 00:28:39,756 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 00:28:39,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 00:28:39,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 00:28:39,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 00:28:39,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 00:28:39,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 00:28:39,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 00:28:39,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 00:28:39,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:28:39,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 00:28:39,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 00:28:39,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 00:28:39,759 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 00:28:39,759 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 00:28:39,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 00:28:39,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 00:28:39,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 00:28:39,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 00:28:39,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 00:28:39,760 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 00:28:39,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 00:28:40,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 00:28:40,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 00:28:40,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 00:28:40,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 00:28:40,046 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 00:28:40,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-65.i [2023-12-23 00:28:41,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 00:28:41,367 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 00:28:41,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-65.i [2023-12-23 00:28:41,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/852dfe700/af95106d9eb843e39ac95ec7eb80c537/FLAG0f2553b9c [2023-12-23 00:28:41,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/852dfe700/af95106d9eb843e39ac95ec7eb80c537 [2023-12-23 00:28:41,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 00:28:41,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 00:28:41,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 00:28:41,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 00:28:41,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 00:28:41,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa00049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41, skipping insertion in model container [2023-12-23 00:28:41,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 00:28:41,550 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-100_file-65.i[916,929] [2023-12-23 00:28:41,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:28:41,667 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 00:28:41,676 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-100_file-65.i[916,929] [2023-12-23 00:28:41,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 00:28:41,738 INFO L206 MainTranslator]: Completed translation [2023-12-23 00:28:41,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41 WrapperNode [2023-12-23 00:28:41,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 00:28:41,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 00:28:41,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 00:28:41,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 00:28:41,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,788 INFO L138 Inliner]: procedures = 27, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 319 [2023-12-23 00:28:41,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 00:28:41,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 00:28:41,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 00:28:41,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 00:28:41,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,819 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 00:28:41,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 00:28:41,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 00:28:41,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 00:28:41,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 00:28:41,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (1/1) ... [2023-12-23 00:28:41,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 00:28:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 00:28:41,897 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 00:28:41,916 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 00:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 00:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 00:28:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 00:28:41,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 00:28:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 00:28:41,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 00:28:42,028 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 00:28:42,030 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 00:28:43,953 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 00:28:43,989 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 00:28:43,990 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 00:28:43,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:28:43 BoogieIcfgContainer [2023-12-23 00:28:43,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 00:28:43,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 00:28:43,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 00:28:43,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 00:28:43,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:28:41" (1/3) ... [2023-12-23 00:28:43,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb7d329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:28:43, skipping insertion in model container [2023-12-23 00:28:43,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:28:41" (2/3) ... [2023-12-23 00:28:43,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb7d329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:28:43, skipping insertion in model container [2023-12-23 00:28:43,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:28:43" (3/3) ... [2023-12-23 00:28:43,997 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-65.i [2023-12-23 00:28:44,011 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 00:28:44,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 00:28:44,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 00:28:44,062 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;@4b4d17b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 00:28:44,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 00:28:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 76 states have internal predecessors, (109), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-23 00:28:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-23 00:28:44,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:44,091 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:44,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:44,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1608411370, now seen corresponding path program 1 times [2023-12-23 00:28:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:44,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650997747] [2023-12-23 00:28:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:44,110 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 00:28:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:44,127 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 00:28:44,168 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 00:28:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:44,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 00:28:44,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:28:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 5840 trivial. 0 not checked. [2023-12-23 00:28:44,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 00:28:44,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:28:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650997747] [2023-12-23 00:28:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650997747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 00:28:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 00:28:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 00:28:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147801887] [2023-12-23 00:28:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:28:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 00:28:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:28:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 00:28:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 00:28:44,853 INFO L87 Difference]: Start difference. First operand has 135 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 76 states have internal predecessors, (109), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-23 00:28:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:28:45,814 INFO L93 Difference]: Finished difference Result 267 states and 501 transitions. [2023-12-23 00:28:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 00:28:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 342 [2023-12-23 00:28:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:28:45,845 INFO L225 Difference]: With dead ends: 267 [2023-12-23 00:28:45,845 INFO L226 Difference]: Without dead ends: 133 [2023-12-23 00:28:45,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 341 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 00:28:45,851 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 00:28:45,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 00:28:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-23 00:28:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-12-23 00:28:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-23 00:28:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 217 transitions. [2023-12-23 00:28:45,897 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 217 transitions. Word has length 342 [2023-12-23 00:28:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:28:45,897 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 217 transitions. [2023-12-23 00:28:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-23 00:28:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 217 transitions. [2023-12-23 00:28:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-23 00:28:45,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:45,903 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:45,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 00:28:46,127 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 00:28:46,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:46,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -595566440, now seen corresponding path program 1 times [2023-12-23 00:28:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167629101] [2023-12-23 00:28:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:46,131 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 00:28:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:46,132 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 00:28:46,135 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 00:28:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:46,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 00:28:46,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:28:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-23 00:28:46,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 00:28:46,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:28:46,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167629101] [2023-12-23 00:28:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167629101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 00:28:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 00:28:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 00:28:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470171492] [2023-12-23 00:28:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 00:28:46,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 00:28:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:28:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 00:28:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 00:28:46,741 INFO L87 Difference]: Start difference. First operand 133 states and 217 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-23 00:28:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:28:47,371 INFO L93 Difference]: Finished difference Result 336 states and 547 transitions. [2023-12-23 00:28:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 00:28:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 342 [2023-12-23 00:28:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:28:47,377 INFO L225 Difference]: With dead ends: 336 [2023-12-23 00:28:47,377 INFO L226 Difference]: Without dead ends: 204 [2023-12-23 00:28:47,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 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 00:28:47,379 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 110 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 00:28:47,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 469 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 00:28:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-23 00:28:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2023-12-23 00:28:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 119 states have (on average 1.411764705882353) internal successors, (168), 120 states have internal predecessors, (168), 79 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-23 00:28:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 326 transitions. [2023-12-23 00:28:47,419 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 326 transitions. Word has length 342 [2023-12-23 00:28:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:28:47,420 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 326 transitions. [2023-12-23 00:28:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-23 00:28:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 326 transitions. [2023-12-23 00:28:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-23 00:28:47,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:47,424 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:47,455 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 00:28:47,636 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 00:28:47,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:47,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1705256150, now seen corresponding path program 1 times [2023-12-23 00:28:47,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:47,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053636506] [2023-12-23 00:28:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:47,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 00:28:47,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:47,640 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 00:28:47,641 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 00:28:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:48,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 00:28:48,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:28:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2684 proven. 114 refuted. 0 times theorem prover too weak. 3586 trivial. 0 not checked. [2023-12-23 00:28:49,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:28:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 372 proven. 123 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2023-12-23 00:28:49,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:28:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053636506] [2023-12-23 00:28:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053636506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 00:28:49,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:28:49,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-23 00:28:49,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511113239] [2023-12-23 00:28:49,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:28:49,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-23 00:28:49,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:28:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-23 00:28:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-12-23 00:28:49,676 INFO L87 Difference]: Start difference. First operand 201 states and 326 transitions. Second operand has 20 states, 19 states have (on average 5.315789473684211) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (72), 4 states have call predecessors, (72), 9 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2023-12-23 00:28:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:28:51,644 INFO L93 Difference]: Finished difference Result 419 states and 666 transitions. [2023-12-23 00:28:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-23 00:28:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.315789473684211) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (72), 4 states have call predecessors, (72), 9 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 342 [2023-12-23 00:28:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:28:51,679 INFO L225 Difference]: With dead ends: 419 [2023-12-23 00:28:51,680 INFO L226 Difference]: Without dead ends: 219 [2023-12-23 00:28:51,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2023-12-23 00:28:51,682 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 463 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 00:28:51,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 431 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 00:28:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-23 00:28:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2023-12-23 00:28:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 128 states have (on average 1.3671875) internal successors, (175), 129 states have internal predecessors, (175), 79 states have call successors, (79), 5 states have call predecessors, (79), 5 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-23 00:28:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 333 transitions. [2023-12-23 00:28:51,711 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 333 transitions. Word has length 342 [2023-12-23 00:28:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:28:51,713 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 333 transitions. [2023-12-23 00:28:51,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.315789473684211) internal successors, (101), 18 states have internal predecessors, (101), 7 states have call successors, (72), 4 states have call predecessors, (72), 9 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2023-12-23 00:28:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 333 transitions. [2023-12-23 00:28:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-23 00:28:51,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:51,716 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:51,750 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 00:28:51,929 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 00:28:51,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:51,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -157514976, now seen corresponding path program 1 times [2023-12-23 00:28:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839296303] [2023-12-23 00:28:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:51,932 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 00:28:51,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:51,937 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 00:28:51,938 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 00:28:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:52,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 00:28:52,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:28:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1268 proven. 150 refuted. 0 times theorem prover too weak. 4966 trivial. 0 not checked. [2023-12-23 00:28:52,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:28:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 18 proven. 150 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-23 00:28:53,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:28:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839296303] [2023-12-23 00:28:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839296303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 00:28:53,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:28:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 00:28:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958584959] [2023-12-23 00:28:53,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:28:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 00:28:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:28:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 00:28:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 00:28:53,208 INFO L87 Difference]: Start difference. First operand 213 states and 333 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-23 00:28:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:28:54,941 INFO L93 Difference]: Finished difference Result 449 states and 693 transitions. [2023-12-23 00:28:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 00:28:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 344 [2023-12-23 00:28:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:28:54,945 INFO L225 Difference]: With dead ends: 449 [2023-12-23 00:28:54,945 INFO L226 Difference]: Without dead ends: 237 [2023-12-23 00:28:54,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 679 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 00:28:54,946 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 253 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-23 00:28:54,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 352 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-23 00:28:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-23 00:28:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2023-12-23 00:28:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 139 states have internal predecessors, (182), 85 states have call successors, (85), 7 states have call predecessors, (85), 7 states have return successors, (85), 83 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-23 00:28:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 352 transitions. [2023-12-23 00:28:54,971 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 352 transitions. Word has length 344 [2023-12-23 00:28:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:28:54,972 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 352 transitions. [2023-12-23 00:28:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-23 00:28:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 352 transitions. [2023-12-23 00:28:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-23 00:28:54,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:54,974 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:54,990 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 00:28:55,188 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 00:28:55,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:55,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash -599749765, now seen corresponding path program 1 times [2023-12-23 00:28:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923074369] [2023-12-23 00:28:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:55,191 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 00:28:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:55,200 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 00:28:55,201 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 00:28:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:55,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 00:28:55,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:28:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2742 proven. 117 refuted. 0 times theorem prover too weak. 3525 trivial. 0 not checked. [2023-12-23 00:28:56,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 00:28:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 51 proven. 117 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-23 00:28:56,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 00:28:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923074369] [2023-12-23 00:28:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923074369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 00:28:56,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 00:28:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 00:28:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411788583] [2023-12-23 00:28:56,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 00:28:56,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 00:28:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 00:28:56,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 00:28:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 00:28:56,418 INFO L87 Difference]: Start difference. First operand 230 states and 352 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-23 00:28:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 00:28:58,676 INFO L93 Difference]: Finished difference Result 631 states and 951 transitions. [2023-12-23 00:28:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 00:28:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 345 [2023-12-23 00:28:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 00:28:58,680 INFO L225 Difference]: With dead ends: 631 [2023-12-23 00:28:58,680 INFO L226 Difference]: Without dead ends: 411 [2023-12-23 00:28:58,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 682 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 00:28:58,682 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 236 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-23 00:28:58,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 785 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-23 00:28:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-23 00:28:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 342. [2023-12-23 00:28:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 190 states have (on average 1.2263157894736842) internal successors, (233), 192 states have internal predecessors, (233), 136 states have call successors, (136), 15 states have call predecessors, (136), 15 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-23 00:28:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 505 transitions. [2023-12-23 00:28:58,732 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 505 transitions. Word has length 345 [2023-12-23 00:28:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 00:28:58,733 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 505 transitions. [2023-12-23 00:28:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-23 00:28:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 505 transitions. [2023-12-23 00:28:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-23 00:28:58,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 00:28:58,736 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:58,752 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 (6)] Ended with exit code 0 [2023-12-23 00:28:58,948 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 00:28:58,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 00:28:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 00:28:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -599690183, now seen corresponding path program 1 times [2023-12-23 00:28:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 00:28:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329942223] [2023-12-23 00:28:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 00:28:58,950 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 00:28:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 00:28:58,951 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 00:28:58,960 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 00:28:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 00:28:59,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-23 00:28:59,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 00:29:43,027 WARN L293 SmtUtils]: Spent 9.74s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 00:30:07,393 WARN L293 SmtUtils]: Spent 9.89s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 00:30:33,310 WARN L293 SmtUtils]: Spent 10.72s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 00:31:00,883 WARN L293 SmtUtils]: Spent 11.68s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)