/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 03:28:55,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 03:28:55,183 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 03:28:55,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 03:28:55,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 03:28:55,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 03:28:55,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 03:28:55,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 03:28:55,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 03:28:55,217 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 03:28:55,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 03:28:55,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 03:28:55,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 03:28:55,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 03:28:55,218 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 03:28:55,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 03:28:55,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 03:28:55,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 03:28:55,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 03:28:55,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 03:28:55,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 03:28:55,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 03:28:55,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 03:28:55,224 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 03:28:55,228 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 03:28:55,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 03:28:55,228 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 03:28:55,228 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 03:28:55,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 03:28:55,229 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 03:28:55,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 03:28:55,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:28:55,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 03:28:55,230 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 03:28:55,231 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 03:28:55,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 03:28:55,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 03:28:55,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 03:28:55,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 03:28:55,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 03:28:55,439 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 03:28:55,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-32.i [2023-12-23 03:28:56,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 03:28:56,571 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 03:28:56,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-32.i [2023-12-23 03:28:56,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8670a32c2/d92d0b4bbb154bad8e2e6b6de0ace255/FLAG968cdb62b [2023-12-23 03:28:56,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8670a32c2/d92d0b4bbb154bad8e2e6b6de0ace255 [2023-12-23 03:28:56,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 03:28:56,593 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 03:28:56,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 03:28:56,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 03:28:56,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 03:28:56,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6d2658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56, skipping insertion in model container [2023-12-23 03:28:56,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 03:28:56,712 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-32.i[915,928] [2023-12-23 03:28:56,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:28:56,777 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 03:28:56,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-32.i[915,928] [2023-12-23 03:28:56,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:28:56,831 INFO L206 MainTranslator]: Completed translation [2023-12-23 03:28:56,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56 WrapperNode [2023-12-23 03:28:56,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 03:28:56,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 03:28:56,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 03:28:56,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 03:28:56,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,877 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 218 [2023-12-23 03:28:56,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 03:28:56,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 03:28:56,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 03:28:56,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 03:28:56,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,909 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 03:28:56,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 03:28:56,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 03:28:56,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 03:28:56,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 03:28:56,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (1/1) ... [2023-12-23 03:28:56,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:28:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 03:28:56,952 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 03:28:56,957 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 03:28:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 03:28:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 03:28:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 03:28:56,979 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 03:28:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 03:28:56,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 03:28:57,050 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 03:28:57,052 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 03:28:59,588 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 03:28:59,671 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 03:28:59,671 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 03:28:59,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:28:59 BoogieIcfgContainer [2023-12-23 03:28:59,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 03:28:59,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 03:28:59,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 03:28:59,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 03:28:59,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:28:56" (1/3) ... [2023-12-23 03:28:59,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffbe1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:28:59, skipping insertion in model container [2023-12-23 03:28:59,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:28:56" (2/3) ... [2023-12-23 03:28:59,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffbe1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:28:59, skipping insertion in model container [2023-12-23 03:28:59,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:28:59" (3/3) ... [2023-12-23 03:28:59,678 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-32.i [2023-12-23 03:28:59,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 03:28:59,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 03:28:59,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 03:28:59,725 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;@64f2b96c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 03:28:59,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 03:28:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 52 states have internal predecessors, (73), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-23 03:28:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-23 03:28:59,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:28:59,745 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:59,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:28:59,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:28:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1942640331, now seen corresponding path program 1 times [2023-12-23 03:28:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:28:59,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495811860] [2023-12-23 03:28:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:28:59,758 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 03:28:59,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:28:59,759 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 03:28:59,762 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 03:29:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:29:00,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 03:29:00,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:29:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1410 proven. 72 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2023-12-23 03:29:00,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:29:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 42 proven. 72 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-23 03:29:00,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:29:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495811860] [2023-12-23 03:29:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495811860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 03:29:00,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:29:00,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 03:29:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125829413] [2023-12-23 03:29:00,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:29:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 03:29:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:29:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 03:29:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 03:29:00,859 INFO L87 Difference]: Start difference. First operand has 93 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 52 states have internal predecessors, (73), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-23 03:29:02,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:29:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:29:02,986 INFO L93 Difference]: Finished difference Result 214 states and 402 transitions. [2023-12-23 03:29:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 03:29:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 233 [2023-12-23 03:29:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:29:02,995 INFO L225 Difference]: With dead ends: 214 [2023-12-23 03:29:02,995 INFO L226 Difference]: Without dead ends: 122 [2023-12-23 03:29:02,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:29:03,000 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 102 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 03:29:03,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 265 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 03:29:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-23 03:29:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2023-12-23 03:29:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.278688524590164) internal successors, (78), 62 states have internal predecessors, (78), 53 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-23 03:29:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 184 transitions. [2023-12-23 03:29:03,037 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 184 transitions. Word has length 233 [2023-12-23 03:29:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:29:03,038 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 184 transitions. [2023-12-23 03:29:03,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-23 03:29:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 184 transitions. [2023-12-23 03:29:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 03:29:03,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:29:03,041 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:03,052 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 03:29:03,256 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 03:29:03,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:29:03,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:29:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash 616717814, now seen corresponding path program 1 times [2023-12-23 03:29:03,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:29:03,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982379428] [2023-12-23 03:29:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:29:03,258 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 03:29:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:29:03,259 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 03:29:03,261 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 03:29:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:29:03,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 03:29:03,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:29:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-23 03:29:04,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:29:04,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:29:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982379428] [2023-12-23 03:29:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982379428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:29:04,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:29:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 03:29:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698743167] [2023-12-23 03:29:04,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:29:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 03:29:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:29:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 03:29:04,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 03:29:04,048 INFO L87 Difference]: Start difference. First operand 117 states and 184 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 03:29:05,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:29:08,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:29:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:29:08,190 INFO L93 Difference]: Finished difference Result 305 states and 478 transitions. [2023-12-23 03:29:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 03:29:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 234 [2023-12-23 03:29:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:29:08,194 INFO L225 Difference]: With dead ends: 305 [2023-12-23 03:29:08,194 INFO L226 Difference]: Without dead ends: 211 [2023-12-23 03:29:08,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 03:29:08,196 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 27 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 03:29:08,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 03:29:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-23 03:29:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2023-12-23 03:29:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 111 states have (on average 1.2882882882882882) internal successors, (143), 112 states have internal predecessors, (143), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-23 03:29:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 327 transitions. [2023-12-23 03:29:08,246 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 327 transitions. Word has length 234 [2023-12-23 03:29:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:29:08,249 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 327 transitions. [2023-12-23 03:29:08,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 03:29:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 327 transitions. [2023-12-23 03:29:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 03:29:08,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:29:08,262 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:08,272 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 03:29:08,470 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 03:29:08,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:29:08,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:29:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash 618564856, now seen corresponding path program 1 times [2023-12-23 03:29:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:29:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862785939] [2023-12-23 03:29:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:29:08,472 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 03:29:08,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:29:08,473 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 03:29:08,479 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 03:29:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:29:08,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 03:29:08,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:29:28,864 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 03:29:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1208 proven. 162 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2023-12-23 03:29:29,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:30:01,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:30:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862785939] [2023-12-23 03:30:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862785939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:30:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1070598760] [2023-12-23 03:30:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:30:01,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:30:01,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:30:01,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 03:30:01,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 03:30:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:30:02,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 03:30:02,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:30:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1208 proven. 162 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2023-12-23 03:30:19,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:30:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1070598760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:30:40,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:30:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2023-12-23 03:30:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45774210] [2023-12-23 03:30:40,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:30:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-23 03:30:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:30:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-23 03:30:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=113, Unknown=1, NotChecked=0, Total=156 [2023-12-23 03:30:40,402 INFO L87 Difference]: Start difference. First operand 208 states and 327 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-23 03:31:00,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:31:04,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:07,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:31:09,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:21,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:39,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:41,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:44,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 03:31:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:31:45,627 INFO L93 Difference]: Finished difference Result 481 states and 723 transitions. [2023-12-23 03:31:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-23 03:31:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 234 [2023-12-23 03:31:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:31:45,642 INFO L225 Difference]: With dead ends: 481 [2023-12-23 03:31:45,642 INFO L226 Difference]: Without dead ends: 296 [2023-12-23 03:31:45,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=130, Invalid=289, Unknown=1, NotChecked=0, Total=420 [2023-12-23 03:31:45,644 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 145 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2023-12-23 03:31:45,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 349 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 481 Invalid, 1 Unknown, 0 Unchecked, 51.9s Time] [2023-12-23 03:31:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-23 03:31:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 282. [2023-12-23 03:31:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 157 states have (on average 1.2356687898089171) internal successors, (194), 160 states have internal predecessors, (194), 112 states have call successors, (112), 12 states have call predecessors, (112), 12 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-23 03:31:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 418 transitions. [2023-12-23 03:31:45,687 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 418 transitions. Word has length 234 [2023-12-23 03:31:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:31:45,690 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 418 transitions. [2023-12-23 03:31:45,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-23 03:31:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 418 transitions. [2023-12-23 03:31:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 03:31:45,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:31:45,692 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:31:45,703 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 03:31:45,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 03:31:46,100 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 03:31:46,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:31:46,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:31:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash 675823158, now seen corresponding path program 1 times [2023-12-23 03:31:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:31:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870653309] [2023-12-23 03:31:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:31:46,102 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 03:31:46,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:31:46,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:31:46,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 03:31:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:31:46,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-23 03:31:46,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:32:47,806 WARN L293 SmtUtils]: Spent 10.21s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)