/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-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:03:49,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:03:49,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:03:49,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:03:49,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:03:49,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:03:49,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:03:49,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:03:49,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:03:49,929 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:03:49,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:03:49,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:03:49,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:03:49,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:03:49,930 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:03:49,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:03:49,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:03:49,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:03:49,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:03:49,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:03:49,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:03:49,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:03:49,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:03:49,932 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:03:49,933 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:03:49,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:03:49,933 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:03:49,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:03:49,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:03:49,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:03:49,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:03:49,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:03:49,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:03:49,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:03:49,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:03:49,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:03:49,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:03:49,935 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:03:49,935 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:03:49,935 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:03:49,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:03:49,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:03:49,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:03:49,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:03:49,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:03:49,937 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:03:49,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:03:50,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:03:50,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:03:50,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:03:50,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:03:50,135 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:03:50,137 INFO L431 ainManager$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-67.i [2023-12-16 12:03:51,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:03:51,300 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:03:51,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-67.i [2023-12-16 12:03:51,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59684ff0d/c9d0e60a867d48529c47ec59019c86a3/FLAGa5c3e30f7 [2023-12-16 12:03:51,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59684ff0d/c9d0e60a867d48529c47ec59019c86a3 [2023-12-16 12:03:51,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:03:51,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:03:51,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:03:51,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:03:51,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:03:51,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c90658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51, skipping insertion in model container [2023-12-16 12:03:51,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:03:51,475 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-67.i[919,932] [2023-12-16 12:03:51,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:03:51,549 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:03:51,560 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-67.i[919,932] [2023-12-16 12:03:51,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:03:51,616 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:03:51,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51 WrapperNode [2023-12-16 12:03:51,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:03:51,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:03:51,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:03:51,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:03:51,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,672 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2023-12-16 12:03:51,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:03:51,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:03:51,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:03:51,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:03:51,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,708 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]. [2023-12-16 12:03:51,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:03:51,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:03:51,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:03:51,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:03:51,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (1/1) ... [2023-12-16 12:03:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:03:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:03:51,781 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) [2023-12-16 12:03:51,790 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 [2023-12-16 12:03:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:03:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:03:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:03:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:03:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:03:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:03:51,961 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:03:51,962 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:03:53,802 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:03:53,832 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:03:53,832 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:03:53,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:03:53 BoogieIcfgContainer [2023-12-16 12:03:53,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:03:53,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:03:53,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:03:53,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:03:53,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:03:51" (1/3) ... [2023-12-16 12:03:53,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b464e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:03:53, skipping insertion in model container [2023-12-16 12:03:53,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:51" (2/3) ... [2023-12-16 12:03:53,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b464e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:03:53, skipping insertion in model container [2023-12-16 12:03:53,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:03:53" (3/3) ... [2023-12-16 12:03:53,838 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-67.i [2023-12-16 12:03:53,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:03:53,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:03:53,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:03:53,886 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;@b27a450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:03:53,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:03:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 12:03:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-16 12:03:53,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:03:53,912 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:03:53,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:03:53,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:03:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1728525124, now seen corresponding path program 1 times [2023-12-16 12:03:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:03:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701774516] [2023-12-16 12:03:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:03:53,929 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 [2023-12-16 12:03:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:03:53,931 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) [2023-12-16 12:03:53,933 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 [2023-12-16 12:03:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:03:54,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:03:54,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:03:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-16 12:03:55,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:03:55,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:03:55,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701774516] [2023-12-16 12:03:55,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701774516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:03:55,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:03:55,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:03:55,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208781959] [2023-12-16 12:03:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:03:55,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:03:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:03:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:03:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:03:55,039 INFO L87 Difference]: Start difference. First operand has 92 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 12:03:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:03:56,812 INFO L93 Difference]: Finished difference Result 269 states and 510 transitions. [2023-12-16 12:03:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:03:56,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 207 [2023-12-16 12:03:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:03:56,844 INFO L225 Difference]: With dead ends: 269 [2023-12-16 12:03:56,845 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 12:03:56,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:03:56,850 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 81 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 12:03:56,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 399 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 12:03:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 12:03:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 155. [2023-12-16 12:03:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 12:03:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 243 transitions. [2023-12-16 12:03:56,900 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 243 transitions. Word has length 207 [2023-12-16 12:03:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:03:56,901 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 243 transitions. [2023-12-16 12:03:56,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 12:03:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 243 transitions. [2023-12-16 12:03:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-16 12:03:56,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:03:56,904 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:03:56,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 12:03:57,116 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 [2023-12-16 12:03:57,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:03:57,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:03:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -94782890, now seen corresponding path program 1 times [2023-12-16 12:03:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:03:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528711643] [2023-12-16 12:03:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:03:57,119 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 [2023-12-16 12:03:57,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:03:57,120 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) [2023-12-16 12:03:57,122 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 [2023-12-16 12:03:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:03:57,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:03:57,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:03:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 285 proven. 93 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2023-12-16 12:03:57,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:03:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-16 12:03:58,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:03:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528711643] [2023-12-16 12:03:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528711643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:03:58,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:03:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 12:03:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026147175] [2023-12-16 12:03:58,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:03:58,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 12:03:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:03:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 12:03:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 12:03:58,173 INFO L87 Difference]: Start difference. First operand 155 states and 243 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-16 12:03:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:03:59,217 INFO L93 Difference]: Finished difference Result 253 states and 389 transitions. [2023-12-16 12:03:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 12:03:59,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 209 [2023-12-16 12:03:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:03:59,241 INFO L225 Difference]: With dead ends: 253 [2023-12-16 12:03:59,241 INFO L226 Difference]: Without dead ends: 165 [2023-12-16 12:03:59,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:03:59,243 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:03:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 217 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 12:03:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-16 12:03:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-12-16 12:03:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 88 states have internal predecessors, (107), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 12:03:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 243 transitions. [2023-12-16 12:03:59,268 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 243 transitions. Word has length 209 [2023-12-16 12:03:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:03:59,268 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 243 transitions. [2023-12-16 12:03:59,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (65), 2 states have call predecessors, (65), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-16 12:03:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 243 transitions. [2023-12-16 12:03:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-16 12:03:59,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:03:59,271 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:03:59,283 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 [2023-12-16 12:03:59,482 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 [2023-12-16 12:03:59,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:03:59,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:03:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash 54199630, now seen corresponding path program 1 times [2023-12-16 12:03:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:03:59,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022936148] [2023-12-16 12:03:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:03:59,485 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 [2023-12-16 12:03:59,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:03:59,488 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) [2023-12-16 12:03:59,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 12:03:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:03:59,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:03:59,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:04:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-16 12:04:00,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:04:00,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:04:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022936148] [2023-12-16 12:04:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022936148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:04:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:04:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 12:04:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659400243] [2023-12-16 12:04:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:04:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:04:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:04:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:04:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:04:00,210 INFO L87 Difference]: Start difference. First operand 161 states and 243 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 12:04:02,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:04:02,061 INFO L93 Difference]: Finished difference Result 342 states and 520 transitions. [2023-12-16 12:04:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 12:04:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 209 [2023-12-16 12:04:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:04:02,078 INFO L225 Difference]: With dead ends: 342 [2023-12-16 12:04:02,078 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 12:04:02,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 12:04:02,080 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 224 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 12:04:02,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 498 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 12:04:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 12:04:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 174. [2023-12-16 12:04:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-16 12:04:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 263 transitions. [2023-12-16 12:04:02,113 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 263 transitions. Word has length 209 [2023-12-16 12:04:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:04:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 263 transitions. [2023-12-16 12:04:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 12:04:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 263 transitions. [2023-12-16 12:04:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-16 12:04:02,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:04:02,116 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:04:02,132 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 (4)] Ended with exit code 0 [2023-12-16 12:04:02,316 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 [2023-12-16 12:04:02,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:04:02,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:04:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash 870233188, now seen corresponding path program 1 times [2023-12-16 12:04:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:04:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518892174] [2023-12-16 12:04:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:04:02,319 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 [2023-12-16 12:04:02,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:04:02,323 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) [2023-12-16 12:04:02,324 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 [2023-12-16 12:04:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:04:02,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 12:04:02,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:05:05,482 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 [2023-12-16 12:05:05,492 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 [2023-12-16 12:05:06,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 12:05:06,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown