/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_loopvsstraightlinecode_100-1loop_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 20:53:57,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 20:53:57,327 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 20:53:57,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 20:53:57,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 20:53:57,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 20:53:57,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 20:53:57,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 20:53:57,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 20:53:57,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 20:53:57,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 20:53:57,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 20:53:57,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 20:53:57,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 20:53:57,365 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 20:53:57,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 20:53:57,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 20:53:57,365 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 20:53:57,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 20:53:57,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 20:53:57,368 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 20:53:57,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 20:53:57,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 20:53:57,368 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 20:53:57,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 20:53:57,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 20:53:57,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 20:53:57,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 20:53:57,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 20:53:57,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 20:53:57,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 20:53:57,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 20:53:57,370 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 20:53:57,370 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 20:53:57,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 20:53:57,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 20:53:57,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 20:53:57,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 20:53:57,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 20:53:57,371 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 20:53:57,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 20:53:57,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 20:53:57,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 20:53:57,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 20:53:57,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 20:53:57,569 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 20:53:57,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-10.i [2023-12-23 20:53:58,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 20:53:58,756 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 20:53:58,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-10.i [2023-12-23 20:53:58,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0686337/f86f93e01c2d482686704b9a64b9d29b/FLAG26b491b46 [2023-12-23 20:53:58,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0686337/f86f93e01c2d482686704b9a64b9d29b [2023-12-23 20:53:58,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 20:53:58,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 20:53:58,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 20:53:58,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 20:53:58,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 20:53:58,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:53:58" (1/1) ... [2023-12-23 20:53:58,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1503ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:58, skipping insertion in model container [2023-12-23 20:53:58,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:53:58" (1/1) ... [2023-12-23 20:53:58,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 20:53:58,954 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_loopvsstraightlinecode_100-1loop_file-10.i[916,929] [2023-12-23 20:53:59,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 20:53:59,059 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 20:53:59,070 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_loopvsstraightlinecode_100-1loop_file-10.i[916,929] [2023-12-23 20:53:59,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 20:53:59,123 INFO L206 MainTranslator]: Completed translation [2023-12-23 20:53:59,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59 WrapperNode [2023-12-23 20:53:59,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 20:53:59,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 20:53:59,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 20:53:59,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 20:53:59,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,187 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-12-23 20:53:59,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 20:53:59,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 20:53:59,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 20:53:59,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 20:53:59,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,228 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 20:53:59,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 20:53:59,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 20:53:59,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 20:53:59,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 20:53:59,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (1/1) ... [2023-12-23 20:53:59,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 20:53:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 20:53:59,291 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 20:53:59,301 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 20:53:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 20:53:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 20:53:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 20:53:59,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 20:53:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 20:53:59,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 20:53:59,386 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 20:53:59,387 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 20:54:08,592 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 20:54:08,643 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 20:54:08,643 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 20:54:08,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:54:08 BoogieIcfgContainer [2023-12-23 20:54:08,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 20:54:08,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 20:54:08,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 20:54:08,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 20:54:08,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:53:58" (1/3) ... [2023-12-23 20:54:08,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65cd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:54:08, skipping insertion in model container [2023-12-23 20:54:08,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:53:59" (2/3) ... [2023-12-23 20:54:08,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65cd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:54:08, skipping insertion in model container [2023-12-23 20:54:08,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:54:08" (3/3) ... [2023-12-23 20:54:08,650 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-10.i [2023-12-23 20:54:08,675 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 20:54:08,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 20:54:08,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 20:54:08,722 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;@4d7423b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 20:54:08,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 20:54:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:54:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-23 20:54:08,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:54:08,756 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:08,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:54:08,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:54:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 996382228, now seen corresponding path program 1 times [2023-12-23 20:54:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:54:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038550358] [2023-12-23 20:54:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:54:08,772 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 20:54:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:54:08,774 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 20:54:08,780 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 20:54:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:54:09,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 20:54:09,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:54:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 758 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-12-23 20:54:09,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:54:09,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:54:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038550358] [2023-12-23 20:54:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038550358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:54:09,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:54:09,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 20:54:09,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764582156] [2023-12-23 20:54:09,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:54:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 20:54:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:54:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 20:54:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 20:54:09,487 INFO L87 Difference]: Start difference. First operand has 85 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-23 20:54:13,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:14,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:54:14,000 INFO L93 Difference]: Finished difference Result 169 states and 297 transitions. [2023-12-23 20:54:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 20:54:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 182 [2023-12-23 20:54:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:54:14,008 INFO L225 Difference]: With dead ends: 169 [2023-12-23 20:54:14,008 INFO L226 Difference]: Without dead ends: 83 [2023-12-23 20:54:14,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 20:54:14,012 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-23 20:54:14,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-12-23 20:54:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-23 20:54:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-23 20:54:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 53 states have internal predecessors, (73), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:54:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2023-12-23 20:54:14,048 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 182 [2023-12-23 20:54:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:54:14,048 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2023-12-23 20:54:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-23 20:54:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2023-12-23 20:54:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-23 20:54:14,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:54:14,051 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:14,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 20:54:14,256 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 20:54:14,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:54:14,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:54:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1070828692, now seen corresponding path program 1 times [2023-12-23 20:54:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:54:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684064589] [2023-12-23 20:54:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:54:14,259 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 20:54:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:54:14,261 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 20:54:14,266 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 20:54:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:54:14,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 20:54:14,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:54:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-23 20:54:14,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 20:54:14,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:54:14,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684064589] [2023-12-23 20:54:14,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684064589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 20:54:14,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 20:54:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 20:54:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975149649] [2023-12-23 20:54:14,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 20:54:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 20:54:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:54:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 20:54:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 20:54:14,895 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-23 20:54:19,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 20:54:23,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 20:54:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:54:23,407 INFO L93 Difference]: Finished difference Result 165 states and 257 transitions. [2023-12-23 20:54:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 20:54:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 182 [2023-12-23 20:54:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:54:23,409 INFO L225 Difference]: With dead ends: 165 [2023-12-23 20:54:23,409 INFO L226 Difference]: Without dead ends: 83 [2023-12-23 20:54:23,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 20:54:23,411 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 41 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-23 20:54:23,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 204 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-12-23 20:54:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-23 20:54:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-23 20:54:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:54:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 128 transitions. [2023-12-23 20:54:23,419 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 128 transitions. Word has length 182 [2023-12-23 20:54:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:54:23,421 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 128 transitions. [2023-12-23 20:54:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-12-23 20:54:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2023-12-23 20:54:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-23 20:54:23,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:54:23,423 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:23,440 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 20:54:23,632 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 20:54:23,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:54:23,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:54:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1289683410, now seen corresponding path program 1 times [2023-12-23 20:54:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:54:23,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228733245] [2023-12-23 20:54:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:54:23,636 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 20:54:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:54:23,638 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 20:54:23,662 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 20:54:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:54:24,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 20:54:24,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:54:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 258 proven. 144 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-23 20:54:27,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 20:54:27,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:54:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228733245] [2023-12-23 20:54:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228733245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 20:54:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1439385874] [2023-12-23 20:54:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:54:27,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 20:54:27,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 20:54:27,475 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 20:54:27,496 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 20:54:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:54:28,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 20:54:28,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:54:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 231 proven. 75 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2023-12-23 20:54:29,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 20:54:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1439385874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 20:54:30,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 20:54:30,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-23 20:54:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712669762] [2023-12-23 20:54:30,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 20:54:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 20:54:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:54:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 20:54:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 20:54:30,079 INFO L87 Difference]: Start difference. First operand 83 states and 128 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-23 20:54:35,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:39,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:43,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:47,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:51,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:54:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:54:52,082 INFO L93 Difference]: Finished difference Result 175 states and 263 transitions. [2023-12-23 20:54:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 20:54:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 182 [2023-12-23 20:54:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:54:52,086 INFO L225 Difference]: With dead ends: 175 [2023-12-23 20:54:52,086 INFO L226 Difference]: Without dead ends: 93 [2023-12-23 20:54:52,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-23 20:54:52,088 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 101 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-12-23 20:54:52,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 262 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 238 Invalid, 5 Unknown, 0 Unchecked, 21.7s Time] [2023-12-23 20:54:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-23 20:54:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-12-23 20:54:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:54:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2023-12-23 20:54:52,098 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 182 [2023-12-23 20:54:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:54:52,098 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2023-12-23 20:54:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (52), 3 states have call predecessors, (52), 5 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2023-12-23 20:54:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2023-12-23 20:54:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-23 20:54:52,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:54:52,103 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:52,121 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 [2023-12-23 20:54:52,330 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 20:54:52,519 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 20:54:52,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:54:52,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:54:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash 818840479, now seen corresponding path program 1 times [2023-12-23 20:54:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:54:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244799493] [2023-12-23 20:54:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:54:52,521 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 20:54:52,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:54:52,522 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 20:54:52,525 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 20:54:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:54:53,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 20:54:53,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:54:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 277 proven. 6 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2023-12-23 20:54:53,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 20:54:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-12-23 20:54:54,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 20:54:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244799493] [2023-12-23 20:54:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244799493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 20:54:54,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 20:54:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 20:54:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919957485] [2023-12-23 20:54:54,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 20:54:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 20:54:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 20:54:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 20:54:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 20:54:54,071 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 20:54:57,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:55:01,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:55:05,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:55:08,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 20:55:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 20:55:08,874 INFO L93 Difference]: Finished difference Result 287 states and 408 transitions. [2023-12-23 20:55:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 20:55:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 183 [2023-12-23 20:55:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 20:55:08,878 INFO L225 Difference]: With dead ends: 287 [2023-12-23 20:55:08,878 INFO L226 Difference]: Without dead ends: 197 [2023-12-23 20:55:08,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 20:55:08,880 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 237 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 110 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-23 20:55:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 438 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 371 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2023-12-23 20:55:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-23 20:55:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 97. [2023-12-23 20:55:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 20:55:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-12-23 20:55:08,892 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 183 [2023-12-23 20:55:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 20:55:08,892 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-12-23 20:55:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-23 20:55:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-12-23 20:55:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-23 20:55:08,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 20:55:08,894 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:08,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 20:55:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 20:55:09,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 20:55:09,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 20:55:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1105871839, now seen corresponding path program 1 times [2023-12-23 20:55:09,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 20:55:09,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736300252] [2023-12-23 20:55:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 20:55:09,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 20:55:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 20:55:09,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 20:55:09,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 20:56:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 20:56:51,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-23 20:56:51,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 20:58:54,369 WARN L293 SmtUtils]: Spent 15.06s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 21:01:47,146 WARN L293 SmtUtils]: Spent 28.34s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 21:03:40,344 WARN L293 SmtUtils]: Spent 23.36s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 21:06:50,311 WARN L293 SmtUtils]: Spent 33.79s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-23 21:08:41,943 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 21:08:41,943 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 21:08:42,394 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 21:08:42,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 21:08:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 21:08:42,596 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 184 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. [2023-12-23 21:08:42,599 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-23 21:08:42,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 21:08:42,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 09:08:42 BoogieIcfgContainer [2023-12-23 21:08:42,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 21:08:42,606 INFO L158 Benchmark]: Toolchain (without parser) took 883821.20ms. Allocated memory is still 336.6MB. Free memory was 294.6MB in the beginning and 154.4MB in the end (delta: 140.2MB). Peak memory consumption was 141.3MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,606 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 234.9MB. Free memory is still 184.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 21:08:42,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.82ms. Allocated memory is still 336.6MB. Free memory was 294.3MB in the beginning and 277.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.95ms. Allocated memory is still 336.6MB. Free memory was 277.2MB in the beginning and 274.4MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,606 INFO L158 Benchmark]: Boogie Preprocessor took 67.80ms. Allocated memory is still 336.6MB. Free memory was 274.4MB in the beginning and 269.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,607 INFO L158 Benchmark]: RCFGBuilder took 9376.43ms. Allocated memory is still 336.6MB. Free memory was 269.9MB in the beginning and 294.2MB in the end (delta: -24.3MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,607 INFO L158 Benchmark]: TraceAbstraction took 873958.42ms. Allocated memory is still 336.6MB. Free memory was 293.7MB in the beginning and 154.4MB in the end (delta: 139.3MB). Peak memory consumption was 140.4MB. Max. memory is 8.0GB. [2023-12-23 21:08:42,608 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 234.9MB. Free memory is still 184.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 341.82ms. Allocated memory is still 336.6MB. Free memory was 294.3MB in the beginning and 277.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.95ms. Allocated memory is still 336.6MB. Free memory was 277.2MB in the beginning and 274.4MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.80ms. Allocated memory is still 336.6MB. Free memory was 274.4MB in the beginning and 269.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 9376.43ms. Allocated memory is still 336.6MB. Free memory was 269.9MB in the beginning and 294.2MB in the end (delta: -24.3MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 873958.42ms. Allocated memory is still 336.6MB. Free memory was 293.7MB in the beginning and 154.4MB in the end (delta: 139.3MB). Peak memory consumption was 140.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 184 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 46 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.9s, OverallIterations: 5, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 49.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 407 SdHoareTripleChecker+Valid, 49.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 379 mSDsluCounter, 1030 SdHoareTripleChecker+Invalid, 48.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 535 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 621 IncrementalHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 495 mSDtfsCounter, 621 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1157 GetRequests, 1126 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 102 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 911 NumberOfCodeBlocks, 911 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1088 ConstructedInterpolants, 1 QuantifiedInterpolants, 2882 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1537 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 8841/9072 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown