/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 10:05:32,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 10:05:33,046 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 10:05:33,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 10:05:33,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 10:05:33,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 10:05:33,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 10:05:33,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 10:05:33,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 10:05:33,071 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 10:05:33,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 10:05:33,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 10:05:33,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 10:05:33,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 10:05:33,075 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 10:05:33,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 10:05:33,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 10:05:33,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 10:05:33,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 10:05:33,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 10:05:33,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 10:05:33,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 10:05:33,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 10:05:33,077 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 10:05:33,078 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 10:05:33,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 10:05:33,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 10:05:33,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 10:05:33,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 10:05:33,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 10:05:33,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 10:05:33,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 10:05:33,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 10:05:33,081 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 10:05:33,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 10:05:33,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 10:05:33,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 10:05:33,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 10:05:33,252 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 10:05:33,252 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 10:05:33,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i [2023-12-23 10:05:34,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 10:05:34,462 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 10:05:34,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i [2023-12-23 10:05:34,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61911fb4e/7d6b0c6dd27a49ed98a9147468bbc07e/FLAGe1018b4d2 [2023-12-23 10:05:34,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61911fb4e/7d6b0c6dd27a49ed98a9147468bbc07e [2023-12-23 10:05:34,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 10:05:34,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 10:05:34,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 10:05:34,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 10:05:34,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 10:05:34,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c77f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34, skipping insertion in model container [2023-12-23 10:05:34,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 10:05:34,646 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i[919,932] [2023-12-23 10:05:34,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 10:05:34,712 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 10:05:34,719 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i[919,932] [2023-12-23 10:05:34,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 10:05:34,757 INFO L206 MainTranslator]: Completed translation [2023-12-23 10:05:34,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34 WrapperNode [2023-12-23 10:05:34,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 10:05:34,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 10:05:34,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 10:05:34,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 10:05:34,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,819 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 219 [2023-12-23 10:05:34,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 10:05:34,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 10:05:34,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 10:05:34,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 10:05:34,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,858 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 10:05:34,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 10:05:34,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 10:05:34,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 10:05:34,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 10:05:34,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (1/1) ... [2023-12-23 10:05:34,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 10:05:34,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 10:05:34,929 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 10:05:34,935 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 10:05:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 10:05:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 10:05:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 10:05:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 10:05:34,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 10:05:34,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 10:05:35,014 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 10:05:35,016 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 10:05:36,695 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 10:05:36,756 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 10:05:36,756 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 10:05:36,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:05:36 BoogieIcfgContainer [2023-12-23 10:05:36,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 10:05:36,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 10:05:36,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 10:05:36,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 10:05:36,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:05:34" (1/3) ... [2023-12-23 10:05:36,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58117baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:05:36, skipping insertion in model container [2023-12-23 10:05:36,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:05:34" (2/3) ... [2023-12-23 10:05:36,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58117baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:05:36, skipping insertion in model container [2023-12-23 10:05:36,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:05:36" (3/3) ... [2023-12-23 10:05:36,784 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-77.i [2023-12-23 10:05:36,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 10:05:36,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 10:05:36,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 10:05:36,869 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;@f72d717, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 10:05:36,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 10:05:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 10:05:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-23 10:05:36,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:36,883 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:36,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:36,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2115637874, now seen corresponding path program 1 times [2023-12-23 10:05:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038031146] [2023-12-23 10:05:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:36,897 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 10:05:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:36,899 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 10:05:36,900 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 10:05:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:37,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 10:05:37,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:05:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 968 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2023-12-23 10:05:37,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 10:05:37,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:05:37,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038031146] [2023-12-23 10:05:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038031146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 10:05:37,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 10:05:37,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 10:05:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709271807] [2023-12-23 10:05:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 10:05:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 10:05:37,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:05:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 10:05:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 10:05:37,326 INFO L87 Difference]: Start difference. First operand has 92 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 10:05:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:05:37,647 INFO L93 Difference]: Finished difference Result 181 states and 333 transitions. [2023-12-23 10:05:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 10:05:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 214 [2023-12-23 10:05:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:05:37,667 INFO L225 Difference]: With dead ends: 181 [2023-12-23 10:05:37,668 INFO L226 Difference]: Without dead ends: 90 [2023-12-23 10:05:37,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 213 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 10:05:37,673 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 10:05:37,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 10:05:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-23 10:05:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-23 10:05:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 10:05:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 144 transitions. [2023-12-23 10:05:37,753 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 144 transitions. Word has length 214 [2023-12-23 10:05:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:05:37,753 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 144 transitions. [2023-12-23 10:05:37,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 10:05:37,754 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 144 transitions. [2023-12-23 10:05:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-23 10:05:37,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:37,763 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:37,773 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 10:05:37,963 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 10:05:37,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:37,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1181649528, now seen corresponding path program 1 times [2023-12-23 10:05:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434760998] [2023-12-23 10:05:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:37,966 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 10:05:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:37,968 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 10:05:37,970 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 10:05:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:38,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 10:05:38,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:05:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 10:05:38,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 10:05:38,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:05:38,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434760998] [2023-12-23 10:05:38,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434760998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 10:05:38,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 10:05:38,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 10:05:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374241525] [2023-12-23 10:05:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 10:05:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 10:05:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:05:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 10:05:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 10:05:38,309 INFO L87 Difference]: Start difference. First operand 90 states and 144 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 10:05:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:05:38,702 INFO L93 Difference]: Finished difference Result 178 states and 285 transitions. [2023-12-23 10:05:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 10:05:38,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 214 [2023-12-23 10:05:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:05:38,716 INFO L225 Difference]: With dead ends: 178 [2023-12-23 10:05:38,716 INFO L226 Difference]: Without dead ends: 89 [2023-12-23 10:05:38,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 212 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 10:05:38,718 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 25 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 10:05:38,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 248 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 10:05:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-23 10:05:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-23 10:05:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 10:05:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 141 transitions. [2023-12-23 10:05:38,726 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 141 transitions. Word has length 214 [2023-12-23 10:05:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:05:38,727 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 141 transitions. [2023-12-23 10:05:38,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 10:05:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 141 transitions. [2023-12-23 10:05:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-23 10:05:38,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:38,729 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:38,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:38,937 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 10:05:38,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1881167496, now seen corresponding path program 1 times [2023-12-23 10:05:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253007577] [2023-12-23 10:05:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:38,940 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 10:05:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:38,941 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 10:05:38,968 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 10:05:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:39,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 10:05:39,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:05:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1222 proven. 48 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-23 10:05:39,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:05:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 54 proven. 48 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-23 10:05:39,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:05:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253007577] [2023-12-23 10:05:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253007577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 10:05:39,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 10:05:39,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 10:05:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463362634] [2023-12-23 10:05:39,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 10:05:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 10:05:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:05:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 10:05:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 10:05:39,658 INFO L87 Difference]: Start difference. First operand 89 states and 141 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-23 10:05:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:05:40,463 INFO L93 Difference]: Finished difference Result 185 states and 288 transitions. [2023-12-23 10:05:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 10:05:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 214 [2023-12-23 10:05:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:05:40,465 INFO L225 Difference]: With dead ends: 185 [2023-12-23 10:05:40,465 INFO L226 Difference]: Without dead ends: 97 [2023-12-23 10:05:40,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-23 10:05:40,467 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 163 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 10:05:40,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 192 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 10:05:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-23 10:05:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-12-23 10:05:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 10:05:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 139 transitions. [2023-12-23 10:05:40,478 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 139 transitions. Word has length 214 [2023-12-23 10:05:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:05:40,478 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 139 transitions. [2023-12-23 10:05:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-23 10:05:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 139 transitions. [2023-12-23 10:05:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-23 10:05:40,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:05:40,480 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:05:40,498 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 (4)] Forceful destruction successful, exit code 0 [2023-12-23 10:05:40,690 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 10:05:40,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:05:40,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:05:40,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1289690365, now seen corresponding path program 1 times [2023-12-23 10:05:40,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:05:40,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291069673] [2023-12-23 10:05:40,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:05:40,692 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 10:05:40,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:05:40,695 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 10:05:40,696 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 10:05:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:05:40,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-23 10:05:41,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:06:38,377 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 10:07:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1347 proven. 240 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2023-12-23 10:07:02,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-23 10:20:14,325 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 10:20:14,337 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 10:20:14,344 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 10:20:14,344 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 10:20:14,537 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 10:20:14,538 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 217 with TraceHistMax 35,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-27-2-5-2-3-2-3-2-3-2-2-4-4-4-4-3-3-3-2-2-2-2-1 context. [2023-12-23 10:20:14,547 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-23 10:20:14,549 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 10:20:14,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 10:20:14 BoogieIcfgContainer [2023-12-23 10:20:14,575 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 10:20:14,576 INFO L158 Benchmark]: Toolchain (without parser) took 880093.14ms. Allocated memory was 245.4MB in the beginning and 1.2GB in the end (delta: 996.1MB). Free memory was 192.5MB in the beginning and 565.1MB in the end (delta: -372.6MB). Peak memory consumption was 740.2MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,576 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 10:20:14,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.28ms. Allocated memory is still 245.4MB. Free memory was 192.5MB in the beginning and 175.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.64ms. Allocated memory is still 245.4MB. Free memory was 175.7MB in the beginning and 173.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,577 INFO L158 Benchmark]: Boogie Preprocessor took 64.42ms. Allocated memory is still 245.4MB. Free memory was 173.2MB in the beginning and 169.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,577 INFO L158 Benchmark]: RCFGBuilder took 1891.85ms. Allocated memory is still 245.4MB. Free memory was 169.4MB in the beginning and 211.1MB in the end (delta: -41.7MB). Peak memory consumption was 33.2MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,578 INFO L158 Benchmark]: TraceAbstraction took 877796.57ms. Allocated memory was 245.4MB in the beginning and 1.2GB in the end (delta: 996.1MB). Free memory was 210.5MB in the beginning and 565.1MB in the end (delta: -354.6MB). Peak memory consumption was 757.3MB. Max. memory is 8.0GB. [2023-12-23 10:20:14,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.28ms. Allocated memory is still 245.4MB. Free memory was 192.5MB in the beginning and 175.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.64ms. Allocated memory is still 245.4MB. Free memory was 175.7MB in the beginning and 173.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.42ms. Allocated memory is still 245.4MB. Free memory was 173.2MB in the beginning and 169.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1891.85ms. Allocated memory is still 245.4MB. Free memory was 169.4MB in the beginning and 211.1MB in the end (delta: -41.7MB). Peak memory consumption was 33.2MB. Max. memory is 8.0GB. * TraceAbstraction took 877796.57ms. Allocated memory was 245.4MB in the beginning and 1.2GB in the end (delta: 996.1MB). Free memory was 210.5MB in the beginning and 565.1MB in the end (delta: -354.6MB). Peak memory consumption was 757.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 217 with TraceHistMax 35,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-27-2-5-2-3-2-3-2-3-2-2-4-4-4-4-3-3-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 877.7s, OverallIterations: 4, TraceHistogramMax: 35, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 581 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 214 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 216 IncrementalHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 367 mSDtfsCounter, 216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 860 GetRequests, 845 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 642 NumberOfCodeBlocks, 642 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 852 ConstructedInterpolants, 1 QuantifiedInterpolants, 1318 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 9424/9520 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown