/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_25-while_file-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 02:07:30,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 02:07:30,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 02:07:30,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 02:07:30,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 02:07:30,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 02:07:30,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 02:07:30,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 02:07:30,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 02:07:30,771 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 02:07:30,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 02:07:30,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 02:07:30,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 02:07:30,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 02:07:30,772 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 02:07:30,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 02:07:30,773 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 02:07:30,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 02:07:30,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 02:07:30,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 02:07:30,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 02:07:30,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 02:07:30,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 02:07:30,780 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 02:07:30,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 02:07:30,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 02:07:30,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 02:07:30,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 02:07:30,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 02:07:30,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:07:30,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 02:07:30,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 02:07:30,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 02:07:30,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 02:07:30,785 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 02:07:30,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 02:07:30,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 02:07:30,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 02:07:30,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 02:07:30,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 02:07:30,991 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 02:07:30,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-12-24 02:07:32,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 02:07:32,206 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 02:07:32,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-67.i [2023-12-24 02:07:32,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669ff6819/5fa8ce5d12474826bfd133c1e793ed0b/FLAGdbfdc334d [2023-12-24 02:07:32,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669ff6819/5fa8ce5d12474826bfd133c1e793ed0b [2023-12-24 02:07:32,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 02:07:32,230 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 02:07:32,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 02:07:32,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 02:07:32,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 02:07:32,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f4c11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32, skipping insertion in model container [2023-12-24 02:07:32,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 02:07:32,354 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_25-while_file-67.i[915,928] [2023-12-24 02:07:32,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:07:32,400 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 02:07:32,413 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_25-while_file-67.i[915,928] [2023-12-24 02:07:32,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 02:07:32,445 INFO L206 MainTranslator]: Completed translation [2023-12-24 02:07:32,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32 WrapperNode [2023-12-24 02:07:32,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 02:07:32,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 02:07:32,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 02:07:32,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 02:07:32,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,480 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111 [2023-12-24 02:07:32,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 02:07:32,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 02:07:32,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 02:07:32,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 02:07:32,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,501 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]. [2023-12-24 02:07:32,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 02:07:32,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 02:07:32,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 02:07:32,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 02:07:32,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (1/1) ... [2023-12-24 02:07:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 02:07:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 02:07:32,537 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) [2023-12-24 02:07:32,553 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 [2023-12-24 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 02:07:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 02:07:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 02:07:32,621 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 02:07:32,622 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 02:07:32,870 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 02:07:32,910 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 02:07:32,910 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 02:07:32,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:07:32 BoogieIcfgContainer [2023-12-24 02:07:32,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 02:07:32,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 02:07:32,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 02:07:32,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 02:07:32,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:07:32" (1/3) ... [2023-12-24 02:07:32,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5606769d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:07:32, skipping insertion in model container [2023-12-24 02:07:32,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:07:32" (2/3) ... [2023-12-24 02:07:32,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5606769d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:07:32, skipping insertion in model container [2023-12-24 02:07:32,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:07:32" (3/3) ... [2023-12-24 02:07:32,917 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-67.i [2023-12-24 02:07:32,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 02:07:32,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 02:07:32,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 02:07:32,965 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;@2dcaddbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 02:07:32,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 02:07:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 02:07:32,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 02:07:32,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:07:32,977 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:07:32,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:07:32,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:07:32,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1682392043, now seen corresponding path program 1 times [2023-12-24 02:07:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:07:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499781544] [2023-12-24 02:07:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:07:32,990 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 [2023-12-24 02:07:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:07:32,992 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) [2023-12-24 02:07:32,993 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 [2023-12-24 02:07:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:07:33,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 02:07:33,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:07:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-24 02:07:33,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:07:33,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:07:33,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499781544] [2023-12-24 02:07:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499781544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:07:33,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:07:33,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 02:07:33,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602643609] [2023-12-24 02:07:33,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:07:33,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 02:07:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:07:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 02:07:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 02:07:33,251 INFO L87 Difference]: Start difference. First operand has 46 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 02:07:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:07:33,305 INFO L93 Difference]: Finished difference Result 89 states and 161 transitions. [2023-12-24 02:07:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 02:07:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 112 [2023-12-24 02:07:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:07:33,319 INFO L225 Difference]: With dead ends: 89 [2023-12-24 02:07:33,319 INFO L226 Difference]: Without dead ends: 44 [2023-12-24 02:07:33,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 02:07:33,324 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 02:07:33,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 02:07:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-24 02:07:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-24 02:07:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 02:07:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 67 transitions. [2023-12-24 02:07:33,352 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 67 transitions. Word has length 112 [2023-12-24 02:07:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:07:33,352 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 67 transitions. [2023-12-24 02:07:33,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 02:07:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 67 transitions. [2023-12-24 02:07:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 02:07:33,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:07:33,355 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:07:33,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 02:07:33,557 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 [2023-12-24 02:07:33,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:07:33,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:07:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1278455191, now seen corresponding path program 1 times [2023-12-24 02:07:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:07:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460459675] [2023-12-24 02:07:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:07:33,559 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 [2023-12-24 02:07:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:07:33,565 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) [2023-12-24 02:07:33,566 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 [2023-12-24 02:07:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:07:33,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 02:07:33,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:07:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 02:07:33,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:07:33,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:07:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460459675] [2023-12-24 02:07:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460459675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:07:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:07:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 02:07:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94907439] [2023-12-24 02:07:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:07:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 02:07:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:07:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 02:07:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 02:07:33,962 INFO L87 Difference]: Start difference. First operand 44 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:07:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:07:34,538 INFO L93 Difference]: Finished difference Result 180 states and 273 transitions. [2023-12-24 02:07:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 02:07:34,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 112 [2023-12-24 02:07:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:07:34,548 INFO L225 Difference]: With dead ends: 180 [2023-12-24 02:07:34,548 INFO L226 Difference]: Without dead ends: 137 [2023-12-24 02:07:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-24 02:07:34,550 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 71 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 02:07:34,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 260 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 02:07:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-24 02:07:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 86. [2023-12-24 02:07:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 02:07:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 133 transitions. [2023-12-24 02:07:34,571 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 133 transitions. Word has length 112 [2023-12-24 02:07:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:07:34,571 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 133 transitions. [2023-12-24 02:07:34,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:07:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 133 transitions. [2023-12-24 02:07:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 02:07:34,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:07:34,573 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:07:34,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 02:07:34,778 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 [2023-12-24 02:07:34,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:07:34,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:07:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1276608149, now seen corresponding path program 1 times [2023-12-24 02:07:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:07:34,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026710379] [2023-12-24 02:07:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:07:34,780 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 [2023-12-24 02:07:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:07:34,781 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) [2023-12-24 02:07:34,782 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 [2023-12-24 02:07:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:07:34,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 02:07:34,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:11:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 02:11:54,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:11:54,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:11:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026710379] [2023-12-24 02:11:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026710379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:11:54,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:11:54,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 02:11:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5854538] [2023-12-24 02:11:54,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:11:54,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 02:11:54,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:11:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 02:11:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 02:11:54,821 INFO L87 Difference]: Start difference. First operand 86 states and 133 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:11:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:11:56,550 INFO L93 Difference]: Finished difference Result 171 states and 247 transitions. [2023-12-24 02:11:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 02:11:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 112 [2023-12-24 02:11:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:11:56,556 INFO L225 Difference]: With dead ends: 171 [2023-12-24 02:11:56,556 INFO L226 Difference]: Without dead ends: 169 [2023-12-24 02:11:56,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2023-12-24 02:11:56,557 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 129 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 02:11:56,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 351 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 02:11:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-24 02:11:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-12-24 02:11:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 83 states have internal predecessors, (102), 64 states have call successors, (64), 5 states have call predecessors, (64), 5 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 02:11:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2023-12-24 02:11:56,588 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 112 [2023-12-24 02:11:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:11:56,589 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2023-12-24 02:11:56,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:11:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2023-12-24 02:11:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-24 02:11:56,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:11:56,590 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:11:56,610 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 [2023-12-24 02:11:56,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:11:56,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:11:56,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:11:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1276548567, now seen corresponding path program 1 times [2023-12-24 02:11:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:11:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641128076] [2023-12-24 02:11:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:11:56,794 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 [2023-12-24 02:11:56,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:11:56,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 02:11:56,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 02:11:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:11:56,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 02:11:56,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:15:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 02:15:42,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 02:15:42,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:15:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641128076] [2023-12-24 02:15:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641128076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 02:15:42,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 02:15:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 02:15:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486148384] [2023-12-24 02:15:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 02:15:42,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 02:15:42,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:15:42,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 02:15:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 02:15:42,964 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:15:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:15:46,408 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2023-12-24 02:15:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 02:15:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 112 [2023-12-24 02:15:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:15:46,413 INFO L225 Difference]: With dead ends: 161 [2023-12-24 02:15:46,413 INFO L226 Difference]: Without dead ends: 159 [2023-12-24 02:15:46,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-12-24 02:15:46,414 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 77 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 02:15:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 304 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 02:15:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-24 02:15:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2023-12-24 02:15:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 82 states have (on average 1.2317073170731707) internal successors, (101), 83 states have internal predecessors, (101), 64 states have call successors, (64), 5 states have call predecessors, (64), 5 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-24 02:15:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 229 transitions. [2023-12-24 02:15:46,436 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 229 transitions. Word has length 112 [2023-12-24 02:15:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:15:46,437 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 229 transitions. [2023-12-24 02:15:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 02:15:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 229 transitions. [2023-12-24 02:15:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 02:15:46,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:15:46,440 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:15:46,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 02:15:46,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 02:15:46,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:15:46,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:15:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash -38688582, now seen corresponding path program 1 times [2023-12-24 02:15:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:15:46,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964651580] [2023-12-24 02:15:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:15:46,642 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 [2023-12-24 02:15:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:15:46,644 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) [2023-12-24 02:15:46,645 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 [2023-12-24 02:15:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:15:46,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 02:15:46,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:15:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 426 proven. 48 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-24 02:15:47,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:15:47,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 02:15:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964651580] [2023-12-24 02:15:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964651580] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 02:15:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [912436654] [2023-12-24 02:15:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:15:47,696 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 02:15:47,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 02:15:47,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 02:15:47,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 02:15:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:15:48,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 02:15:48,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:15:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 426 proven. 48 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-24 02:15:48,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:15:48,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [912436654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 02:15:48,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 02:15:48,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2023-12-24 02:15:48,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810012864] [2023-12-24 02:15:48,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 02:15:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 02:15:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 02:15:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 02:15:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-12-24 02:15:48,770 INFO L87 Difference]: Start difference. First operand 152 states and 229 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 02:15:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 02:15:52,355 INFO L93 Difference]: Finished difference Result 316 states and 440 transitions. [2023-12-24 02:15:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 02:15:52,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2023-12-24 02:15:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 02:15:52,367 INFO L225 Difference]: With dead ends: 316 [2023-12-24 02:15:52,367 INFO L226 Difference]: Without dead ends: 273 [2023-12-24 02:15:52,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=777, Invalid=2529, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 02:15:52,369 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 147 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 02:15:52,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 383 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 02:15:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-24 02:15:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 206. [2023-12-24 02:15:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 82 states have call successors, (82), 11 states have call predecessors, (82), 11 states have return successors, (82), 80 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-24 02:15:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 297 transitions. [2023-12-24 02:15:52,398 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 297 transitions. Word has length 113 [2023-12-24 02:15:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 02:15:52,399 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 297 transitions. [2023-12-24 02:15:52,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 02:15:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 297 transitions. [2023-12-24 02:15:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-24 02:15:52,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 02:15:52,401 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 02:15:52,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-24 02:15:52,613 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 (6)] Ended with exit code 0 [2023-12-24 02:15:52,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 02:15:52,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 02:15:52,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 02:15:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash -36841540, now seen corresponding path program 1 times [2023-12-24 02:15:52,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 02:15:52,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792295318] [2023-12-24 02:15:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 02:15:52,810 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 [2023-12-24 02:15:52,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 02:15:52,811 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) [2023-12-24 02:15:52,811 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 [2023-12-24 02:15:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 02:15:52,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 02:15:52,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 02:17:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 237 proven. 6 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-24 02:17:03,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 02:20:29,013 WARN L293 SmtUtils]: Spent 26.55s on a formula simplification. DAG size of input: 194 DAG size of output: 179 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:21:02,943 WARN L293 SmtUtils]: Spent 11.72s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 02:21:34,574 WARN L293 SmtUtils]: Spent 11.85s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 02:22:01,309 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 02:22:01,315 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 (8)] Forceful destruction successful, exit code 0 [2023-12-24 02:22:01,319 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 [2023-12-24 02:22:01,319 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 [2023-12-24 02:22:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-12-24 02:22:01,510 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 114 with TraceHistMax 19,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-2-1 context. [2023-12-24 02:22:01,514 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-24 02:22:01,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 02:22:01,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:22:01 BoogieIcfgContainer [2023-12-24 02:22:01,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 02:22:01,518 INFO L158 Benchmark]: Toolchain (without parser) took 869287.95ms. Allocated memory was 284.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 244.5MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.2GB. Max. memory is 8.0GB. [2023-12-24 02:22:01,518 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 210.8MB. Free memory is still 162.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 02:22:01,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.96ms. Allocated memory is still 284.2MB. Free memory was 244.5MB in the beginning and 231.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-24 02:22:01,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.74ms. Allocated memory is still 284.2MB. Free memory was 231.3MB in the beginning and 229.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 02:22:01,519 INFO L158 Benchmark]: Boogie Preprocessor took 31.91ms. Allocated memory is still 284.2MB. Free memory was 229.3MB in the beginning and 226.8MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 02:22:01,519 INFO L158 Benchmark]: RCFGBuilder took 397.30ms. Allocated memory is still 284.2MB. Free memory was 226.6MB in the beginning and 206.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-24 02:22:01,520 INFO L158 Benchmark]: TraceAbstraction took 868605.78ms. Allocated memory was 284.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 205.9MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.1GB. Max. memory is 8.0GB. [2023-12-24 02:22:01,522 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 210.8MB. Free memory is still 162.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.96ms. Allocated memory is still 284.2MB. Free memory was 244.5MB in the beginning and 231.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.74ms. Allocated memory is still 284.2MB. Free memory was 231.3MB in the beginning and 229.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.91ms. Allocated memory is still 284.2MB. Free memory was 229.3MB in the beginning and 226.8MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 397.30ms. Allocated memory is still 284.2MB. Free memory was 226.6MB in the beginning and 206.6MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 868605.78ms. Allocated memory was 284.2MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 205.9MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 114 with TraceHistMax 19,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.6s, OverallIterations: 6, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 424 mSDsluCounter, 1362 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1009 mSDsCounter, 395 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1576 IncrementalHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 395 mSolverCounterUnsat, 353 mSDtfsCounter, 1576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 836 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=5, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 142 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 487.9s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 668 ConstructedInterpolants, 4 QuantifiedInterpolants, 6369 SizeOfPredicates, 67 NumberOfNonLiveVariables, 1121 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 4008/4104 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