/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-53.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 21:36:11,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 21:36:11,529 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 21:36:11,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 21:36:11,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 21:36:11,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 21:36:11,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 21:36:11,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 21:36:11,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 21:36:11,560 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 21:36:11,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 21:36:11,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 21:36:11,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 21:36:11,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 21:36:11,562 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 21:36:11,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 21:36:11,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 21:36:11,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 21:36:11,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 21:36:11,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 21:36:11,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 21:36:11,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 21:36:11,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 21:36:11,563 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 21:36:11,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 21:36:11,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 21:36:11,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 21:36:11,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 21:36:11,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 21:36:11,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 21:36:11,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 21:36:11,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 21:36:11,567 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 21:36:11,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 21:36:11,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 21:36:11,568 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 21:36:11,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 21:36:11,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 21:36:11,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 21:36:11,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 21:36:11,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 21:36:11,782 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 21:36:11,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.i [2023-12-23 21:36:12,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 21:36:13,042 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 21:36:13,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-53.i [2023-12-23 21:36:13,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50754a1cd/07481ec3e489436c928fce0996279f73/FLAG24f0a80aa [2023-12-23 21:36:13,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50754a1cd/07481ec3e489436c928fce0996279f73 [2023-12-23 21:36:13,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 21:36:13,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 21:36:13,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 21:36:13,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 21:36:13,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 21:36:13,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297a22f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13, skipping insertion in model container [2023-12-23 21:36:13,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 21:36:13,232 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-53.i[916,929] [2023-12-23 21:36:13,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 21:36:13,321 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 21:36:13,329 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-53.i[916,929] [2023-12-23 21:36:13,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 21:36:13,390 INFO L206 MainTranslator]: Completed translation [2023-12-23 21:36:13,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13 WrapperNode [2023-12-23 21:36:13,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 21:36:13,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 21:36:13,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 21:36:13,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 21:36:13,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,426 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2023-12-23 21:36:13,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 21:36:13,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 21:36:13,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 21:36:13,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 21:36:13,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,449 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 21:36:13,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 21:36:13,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 21:36:13,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 21:36:13,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 21:36:13,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (1/1) ... [2023-12-23 21:36:13,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 21:36:13,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 21:36:13,518 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 21:36:13,549 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 21:36:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 21:36:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 21:36:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 21:36:13,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 21:36:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 21:36:13,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 21:36:13,643 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 21:36:13,644 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 21:36:27,589 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 21:36:27,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 21:36:27,650 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 21:36:27,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:36:27 BoogieIcfgContainer [2023-12-23 21:36:27,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 21:36:27,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 21:36:27,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 21:36:27,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 21:36:27,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:36:13" (1/3) ... [2023-12-23 21:36:27,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e463b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:36:27, skipping insertion in model container [2023-12-23 21:36:27,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:36:13" (2/3) ... [2023-12-23 21:36:27,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e463b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:36:27, skipping insertion in model container [2023-12-23 21:36:27,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:36:27" (3/3) ... [2023-12-23 21:36:27,667 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-53.i [2023-12-23 21:36:27,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 21:36:27,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 21:36:27,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 21:36:27,737 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;@5ea07f73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 21:36:27,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 21:36:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 52 states have internal predecessors, (75), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-23 21:36:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-23 21:36:27,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:36:27,753 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:27,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:36:27,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:36:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash -201051373, now seen corresponding path program 1 times [2023-12-23 21:36:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:36:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726901024] [2023-12-23 21:36:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:36:27,767 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 21:36:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:36:27,769 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 21:36:27,774 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 21:36:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:36:28,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 21:36:28,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:36:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-23 21:36:28,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 21:36:28,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:36:28,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726901024] [2023-12-23 21:36:28,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726901024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 21:36:28,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 21:36:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 21:36:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033672305] [2023-12-23 21:36:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 21:36:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 21:36:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:36:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 21:36:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 21:36:28,731 INFO L87 Difference]: Start difference. First operand has 79 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 52 states have internal predecessors, (75), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 21:36:33,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:36:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:36:34,379 INFO L93 Difference]: Finished difference Result 157 states and 274 transitions. [2023-12-23 21:36:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 21:36:34,381 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 163 [2023-12-23 21:36:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:36:34,386 INFO L225 Difference]: With dead ends: 157 [2023-12-23 21:36:34,386 INFO L226 Difference]: Without dead ends: 77 [2023-12-23 21:36:34,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 162 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 21:36:34,391 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-23 21:36:34,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-12-23 21:36:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-23 21:36:34,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-23 21:36:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-23 21:36:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions. [2023-12-23 21:36:34,441 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 163 [2023-12-23 21:36:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:36:34,442 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 120 transitions. [2023-12-23 21:36:34,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-23 21:36:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions. [2023-12-23 21:36:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-23 21:36:34,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:36:34,445 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:34,463 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 21:36:34,662 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 21:36:34,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:36:34,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:36:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1857830387, now seen corresponding path program 1 times [2023-12-23 21:36:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:36:34,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540989028] [2023-12-23 21:36:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:36:34,664 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 21:36:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:36:34,665 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 21:36:34,677 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 21:36:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:36:35,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 21:36:35,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:36:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 514 proven. 51 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2023-12-23 21:36:38,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:36:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 21 proven. 51 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-23 21:36:40,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:36:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540989028] [2023-12-23 21:36:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540989028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 21:36:40,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:36:40,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 21:36:40,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976176104] [2023-12-23 21:36:40,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:36:40,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 21:36:40,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:36:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 21:36:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 21:36:40,529 INFO L87 Difference]: Start difference. First operand 77 states and 120 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-23 21:36:48,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:36:52,337 WARN L539 Checker$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 21:36:56,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:37:00,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:37:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:37:00,884 INFO L93 Difference]: Finished difference Result 161 states and 246 transitions. [2023-12-23 21:37:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 21:37:00,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 163 [2023-12-23 21:37:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:37:00,889 INFO L225 Difference]: With dead ends: 161 [2023-12-23 21:37:00,889 INFO L226 Difference]: Without dead ends: 85 [2023-12-23 21:37:00,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-23 21:37:00,891 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-12-23 21:37:00,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 273 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 4 Unknown, 0 Unchecked, 19.8s Time] [2023-12-23 21:37:00,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-23 21:37:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2023-12-23 21:37:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-23 21:37:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2023-12-23 21:37:00,917 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 121 transitions. Word has length 163 [2023-12-23 21:37:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:37:00,917 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 121 transitions. [2023-12-23 21:37:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-23 21:37:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 121 transitions. [2023-12-23 21:37:00,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-23 21:37:00,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:37:00,919 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:00,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 21:37:01,138 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 21:37:01,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:37:01,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:37:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1857770805, now seen corresponding path program 1 times [2023-12-23 21:37:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:37:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636793647] [2023-12-23 21:37:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:37:01,140 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 21:37:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:37:01,141 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 21:37:01,143 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 21:37:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:37:01,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 21:37:01,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:37:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 332 proven. 177 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2023-12-23 21:37:16,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:37:17,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:37:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636793647] [2023-12-23 21:37:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636793647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:37:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155090355] [2023-12-23 21:37:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:37:17,434 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 21:37:17,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 21:37:17,474 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 21:37:17,475 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 21:37:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:37:19,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-23 21:37:19,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:37:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 332 proven. 177 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2023-12-23 21:37:33,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:37:37,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155090355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:37:37,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:37:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2023-12-23 21:37:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945825741] [2023-12-23 21:37:37,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:37:37,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-23 21:37:37,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:37:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-23 21:37:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-12-23 21:37:37,539 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-23 21:37:56,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:00,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:04,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:08,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:12,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:16,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:20,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:24,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:28,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:35,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:39,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:43,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:47,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:51,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:55,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:38:59,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:07,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:11,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:15,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:21,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:25,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:29,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:33,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:37,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:41,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:45,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:49,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:53,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:39:57,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:01,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:05,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:12,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:16,074 WARN L539 Checker$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 21:40:20,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:24,092 WARN L539 Checker$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 21:40:28,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:32,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:36,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:40,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:44,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:48,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:52,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:40:56,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:00,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:06,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:10,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:14,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:18,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:22,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:26,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:30,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:34,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:38,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:43,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:47,007 WARN L539 Checker$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 21:41:52,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:41:56,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:00,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:05,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:09,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:13,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:17,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:21,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:25,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:29,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:33,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:37,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:41,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:47,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:51,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:55,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:42:59,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:03,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:07,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:11,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:15,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:19,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:20,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:22,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:28,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:32,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:36,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:40,426 WARN L539 Checker$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 21:43:44,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:48,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:52,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:43:59,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:03,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:07,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:11,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:17,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:21,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:25,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:29,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:33,617 WARN L539 Checker$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 21:44:37,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:41,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:45,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:44:49,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:53,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:57,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:44:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:44:58,265 INFO L93 Difference]: Finished difference Result 364 states and 525 transitions. [2023-12-23 21:44:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-23 21:44:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 163 [2023-12-23 21:44:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:44:58,282 INFO L225 Difference]: With dead ends: 364 [2023-12-23 21:44:58,282 INFO L226 Difference]: Without dead ends: 284 [2023-12-23 21:44:58,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 453 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=594, Invalid=2162, Unknown=0, NotChecked=0, Total=2756 [2023-12-23 21:44:58,284 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 846 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 130 mSolverCounterUnsat, 100 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 426.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 100 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 431.2s IncrementalHoareTripleChecker+Time [2023-12-23 21:44:58,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 763 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 698 Invalid, 100 Unknown, 0 Unchecked, 431.2s Time] [2023-12-23 21:44:58,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-23 21:44:58,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 180. [2023-12-23 21:44:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 118 states have internal predecessors, (150), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-23 21:44:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 258 transitions. [2023-12-23 21:44:58,351 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 258 transitions. Word has length 163 [2023-12-23 21:44:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:44:58,351 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 258 transitions. [2023-12-23 21:44:58,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-12-23 21:44:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 258 transitions. [2023-12-23 21:44:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-23 21:44:58,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:44:58,353 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:58,375 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 21:44:58,588 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 21:44:58,775 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 21:44:58,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:44:58,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:44:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash 369252075, now seen corresponding path program 1 times [2023-12-23 21:44:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:44:58,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768223689] [2023-12-23 21:44:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:44:58,776 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 21:44:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:44:58,777 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 21:44:58,797 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 21:44:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:44:59,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 21:44:59,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:45:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-23 21:45:04,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:45:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-23 21:45:06,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:45:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768223689] [2023-12-23 21:45:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768223689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 21:45:06,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:45:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-23 21:45:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562866931] [2023-12-23 21:45:06,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:45:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-23 21:45:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:45:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-23 21:45:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-23 21:45:06,305 INFO L87 Difference]: Start difference. First operand 180 states and 258 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-23 21:45:15,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:19,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:23,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:27,891 WARN L539 Checker$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 21:45:31,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:35,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:39,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:43,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:47,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:51,969 WARN L539 Checker$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 21:45:55,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:45:59,983 WARN L539 Checker$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 21:46:04,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:46:08,004 WARN L539 Checker$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 21:46:12,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:46:16,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:46:20,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 21:46:24,150 WARN L539 Checker$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 21:46:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:46:29,868 INFO L93 Difference]: Finished difference Result 548 states and 767 transitions. [2023-12-23 21:46:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-23 21:46:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 164 [2023-12-23 21:46:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:46:29,872 INFO L225 Difference]: With dead ends: 548 [2023-12-23 21:46:29,873 INFO L226 Difference]: Without dead ends: 444 [2023-12-23 21:46:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2023-12-23 21:46:29,874 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 291 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 126 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.4s IncrementalHoareTripleChecker+Time [2023-12-23 21:46:29,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 583 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 556 Invalid, 18 Unknown, 0 Unchecked, 80.4s Time] [2023-12-23 21:46:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-23 21:46:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 222. [2023-12-23 21:46:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 156 states have internal predecessors, (193), 54 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-23 21:46:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-12-23 21:46:29,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 164 [2023-12-23 21:46:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:46:29,921 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-12-23 21:46:29,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-23 21:46:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-12-23 21:46:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-23 21:46:29,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:46:29,926 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:29,946 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 21:46:30,149 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 21:46:30,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:46:30,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:46:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1320469476, now seen corresponding path program 1 times [2023-12-23 21:46:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:46:30,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302650804] [2023-12-23 21:46:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:46:30,151 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 21:46:30,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:46:30,152 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 21:46:30,171 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 21:46:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:46:30,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 21:46:30,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:46:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 414 proven. 57 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-23 21:46:37,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:46:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-23 21:46:38,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:46:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302650804] [2023-12-23 21:46:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302650804] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 21:46:38,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 21:46:38,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-23 21:46:38,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224336947] [2023-12-23 21:46:38,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 21:46:38,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 21:46:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:46:38,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 21:46:38,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 21:46:38,866 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 21:46:44,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:46:48,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:46:54,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:47:00,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:47:04,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:47:08,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-23 21:47:12,083 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 [1] [2023-12-23 21:47:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 21:47:12,725 INFO L93 Difference]: Finished difference Result 377 states and 515 transitions. [2023-12-23 21:47:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 21:47:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 164 [2023-12-23 21:47:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 21:47:12,727 INFO L225 Difference]: With dead ends: 377 [2023-12-23 21:47:12,727 INFO L226 Difference]: Without dead ends: 276 [2023-12-23 21:47:12,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 21:47:12,729 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 92 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 13 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-12-23 21:47:12,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 207 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 33.8s Time] [2023-12-23 21:47:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-23 21:47:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 226. [2023-12-23 21:47:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 158 states have (on average 1.2468354430379747) internal successors, (197), 159 states have internal predecessors, (197), 54 states have call successors, (54), 13 states have call predecessors, (54), 13 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-23 21:47:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 305 transitions. [2023-12-23 21:47:12,744 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 305 transitions. Word has length 164 [2023-12-23 21:47:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 21:47:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 305 transitions. [2023-12-23 21:47:12,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-23 21:47:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 305 transitions. [2023-12-23 21:47:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-23 21:47:12,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 21:47:12,746 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:12,763 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 21:47:12,962 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 21:47:12,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 21:47:12,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 21:47:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2138117926, now seen corresponding path program 1 times [2023-12-23 21:47:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 21:47:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283272641] [2023-12-23 21:47:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:47:12,964 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 21:47:12,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 21:47:12,965 INFO L229 MonitoredProcess]: Starting monitored process 8 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 21:47:12,967 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 (8)] Waiting until timeout for monitored process [2023-12-23 21:47:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:47:15,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-23 21:47:15,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:47:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 655 proven. 252 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-12-23 21:47:39,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:47:55,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 21:47:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283272641] [2023-12-23 21:47:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283272641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:47:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [908403423] [2023-12-23 21:47:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 21:47:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 21:47:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 21:47:55,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 21:47:55,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 21:47:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 21:47:57,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-23 21:47:57,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 21:48:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 604 proven. 210 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-23 21:48:46,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 21:49:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [908403423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 21:49:29,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 21:49:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 48 [2023-12-23 21:49:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032911613] [2023-12-23 21:49:29,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 21:49:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-23 21:49:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 21:49:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-23 21:49:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=3080, Unknown=0, NotChecked=0, Total=3540 [2023-12-23 21:49:29,970 INFO L87 Difference]: Start difference. First operand 226 states and 305 transitions. Second operand has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 44 states have internal predecessors, (122), 13 states have call successors, (50), 13 states have call predecessors, (50), 18 states have return successors, (50), 11 states have call predecessors, (50), 13 states have call successors, (50) [2023-12-23 21:50:16,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:20,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:24,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:28,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:32,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:36,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:40,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:44,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:48,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:52,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-23 21:50:55,784 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 21:50:55,784 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 21:50:55,802 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 21:50:56,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 21:50:56,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-23 21:50:56,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 21:50:56,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 337 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=1275, Invalid=6735, Unknown=0, NotChecked=0, Total=8010 [2023-12-23 21:50:56,849 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 149 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 61 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2023-12-23 21:50:56,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 561 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1595 Invalid, 11 Unknown, 0 Unchecked, 66.6s Time] [2023-12-23 21:50:56,850 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 21:50:56,851 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-23 21:50:56,854 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-23 21:50:56,855 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 21:50:56,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 09:50:56 BoogieIcfgContainer [2023-12-23 21:50:56,872 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 21:50:56,873 INFO L158 Benchmark]: Toolchain (without parser) took 883804.00ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 180.1MB in the beginning and 219.7MB in the end (delta: -39.6MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,873 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 231.7MB. Free memory is still 176.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 21:50:56,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.61ms. Allocated memory is still 231.7MB. Free memory was 180.1MB in the beginning and 162.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 231.7MB. Free memory was 162.8MB in the beginning and 159.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,873 INFO L158 Benchmark]: Boogie Preprocessor took 48.58ms. Allocated memory is still 231.7MB. Free memory was 159.7MB in the beginning and 154.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,873 INFO L158 Benchmark]: RCFGBuilder took 14174.00ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 154.9MB in the beginning and 238.0MB in the end (delta: -83.0MB). Peak memory consumption was 31.8MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,874 INFO L158 Benchmark]: TraceAbstraction took 869220.44ms. Allocated memory is still 278.9MB. Free memory was 237.2MB in the beginning and 219.7MB in the end (delta: 17.5MB). Peak memory consumption was 17.7MB. Max. memory is 8.0GB. [2023-12-23 21:50:56,874 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 231.7MB. Free memory is still 176.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.61ms. Allocated memory is still 231.7MB. Free memory was 180.1MB in the beginning and 162.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 231.7MB. Free memory was 162.8MB in the beginning and 159.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.58ms. Allocated memory is still 231.7MB. Free memory was 159.7MB in the beginning and 154.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 14174.00ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 154.9MB in the beginning and 238.0MB in the end (delta: -83.0MB). Peak memory consumption was 31.8MB. Max. memory is 8.0GB. * TraceAbstraction took 869220.44ms. Allocated memory is still 278.9MB. Free memory was 237.2MB in the beginning and 219.7MB in the end (delta: 17.5MB). Peak memory consumption was 17.7MB. 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 executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 869.1s, OverallIterations: 6, TraceHistogramMax: 25, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 671.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 141 mSolverCounterUnknown, 1449 SdHoareTripleChecker+Valid, 637.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1431 mSDsluCounter, 2504 SdHoareTripleChecker+Invalid, 629.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1910 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3095 IncrementalHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 594 mSDtfsCounter, 3095 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2115 GetRequests, 1905 SyntacticMatches, 18 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 3875 ImplicationChecksByTransitivity, 124.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=5, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 380 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 9.8s SatisfiabilityAnalysisTime, 186.1s InterpolantComputationTime, 1308 NumberOfCodeBlocks, 1308 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1788 ConstructedInterpolants, 48 QuantifiedInterpolants, 15118 SizeOfPredicates, 73 NumberOfNonLiveVariables, 2254 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 12105/13200 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